Diaphragm speaker and earphone capable of producing three-dimensional stereo effect

Abstract

The present invention relates to a diaphragm loudspeaker and a headset capable of producing a three-dimensional stereo effect. It solves technical problems such as the unreasonableness of existing designs. The diaphragm loudspeaker comprises a loudspeaker unit, a diaphragm unit is arranged on one side of the loudspeaker unit, a sound wave channel unit penetrating the loudspeaker unit is arranged on the loudspeaker unit, the loudspeaker unit comprises a magnet unit, a yoke unit is arranged on the edge of the magnet unit, the diaphragm unit is arranged on one side of the sound wave channel unit, and the loudspeaker unit further comprises a diaphragm driving unit. The advantages are: the external / internal multiple systems, structures, technologies, settings and coordination of various front and rear loudspeakers, especially the coordinated coordination of the diaphragm unit, the annular voice coil unit and the sound wave channel unit of the loudspeaker to achieve better maximization and optimization of the communication, transmission and resonance of the sound waves of the front and rear loudspeakers.

Description

Technical Field

[0001] The present invention is a further improvement of US Patent US8515103 and Chinese Patent 201110063904.5, and relates to a headset for an audio system and a communication system, and in particular to a diaphragm speaker suitable for a headset and a headset comprising multiple speakers (sound drivers). Background Art

[0002] In the prior art, there are various small headphones with multiple speakers on the market, that is, multiple sound drivers are installed in the small headphones, some are arranged in parallel, and some are arranged front and back. Earbud headphones are specially designed headphones, and their small earmuffs require a special closed / independent sound environment from the sound source to the sound effect space and reverberation space, to the sound output unit, and finally to the listener's ear canal, and the more direct and closed the better. There are three basic requirements for earbud headphones: small size, true stereo sound effects of low / mid / high frequency audio, and comfort for the listener to wear / listen to the ears. These requirements must be achieved in a very small, closed, independent sound space and external environment and structure, especially how to coordinate the front and rear structures and speaker structures in such a small earmuff to achieve the communication and resonance of the front and rear sound waves to produce three-dimensional stereo with Z-axis depth.

[0003] Some in-ear headphones with dual speakers arranged front and back on the market use a ventilation path or sound channel to direct the sound of the rear speaker to the sound port output. For example, Panasonic's Chinese patent 201180002097.4 arranges a ventilation path between the first frame and the second frame of the front and rear speakers, and directs the sound of the second unit speaker to the sound of the first unit after mixing. However, there are three problems with this design. The first problem is that the ventilation path only ventilates the front sound waves of the first and second units, and the rear structures of the back of the first and second unit speakers are closed, and there are no rear sound waves connected to the ventilation path; the second problem is that the distance from the side of the second unit to the front of the ventilation path is too long and narrow, which weakens the sound wave strength of the second unit; the third problem is that the rear ends of the first and second unit speakers are closed or "repulsive" and "cancel each other" or the sound from the rear is directly radiated to the space outside the back of the earmuffs, without any rear sound effects and resonance structures and functions; therefore, it is impossible to produce three-dimensional stereo with better Z-axis depth.

[0004] AKG Acoustics Co., Ltd.'s patent China 200910127446.X adopts the method of setting the first transducer in the sound channel of the second transducer to transmit sound, and sealing the sound channel in front of the second transducer. There is a problem with this design, that is, the front chamber is sealed, the sound channel for transmitting sound is sealed in the front earplug area, and the space behind the second transducer is not connected to the front chamber, so no sound waves can be transmitted to the rear space to resonate, and three-dimensional stereo with Z-axis depth cannot be generated.

[0005] There are two US patent applications for dual-frequency coaxial headphones, US Patent Application No. 2009 / 0279729A1 and US Patent Application Publication No. 2010 / 0046783A1. These two patent applications discuss dual-frequency coaxial headphones, where a low-frequency speaker and its magnet and another high-frequency speaker and its magnet share the same axis and are arranged in opposite directions. These low-frequency and high-frequency speakers that share the same axis and are arranged in opposite directions are output separately and cannot be independently arranged or structured, so stereo multi-sound wave resonance and output cannot be generated. There is not enough deep sound space for these dual-frequency coaxial inverted headphones.

[0006] Therefore, in order to solve the above problems and shortcomings, how to coordinate the front and rear structures and the multi-speaker structure in such a small earmuff to achieve the maximum and most optimized communication and resonance of the front and rear sound waves to produce three-dimensional stereo with better Z-axis depth is a problem that needs to be solved.

[0007] The Chinese patent application number 201110063904.5 provides an earphone, in particular, an earbud-type earphone including a plurality of loudspeakers (i.e., sound drivers), including an earmuff, a sound output unit connected to the front of the earmuff, the earmuff including a front part, a rear part, a front-end sound effect unit arranged at the front part, a front-end sound resonator arranged at the front part, a rear-end sound resonator arranged at the rear part, and a rear-end sound effect unit arranged at the rear part, the front part of the earmuff is provided with one or more front-end loudspeakers, the rear part of the earmuff is provided with one or more rear-end loudspeakers, a sound controller is provided in the earmuff, and by arranging a plurality of loudspeakers front and back on the same axis or on different axes to create a realistic three-dimensional stereo space or effect, a three-dimensional stereo effect and stereo sound quality with XYZ is obtained, and the sound quality has a wider sound in two dimensions and real-time stereo sound in the third dimension of depth.

[0008] On the basis of patent 201110063904.5, it is worthwhile to conduct in-depth research on how to provide a headset that can create a three-dimensional stereo with better Z-axis depth and its effects through technical means. In addition, the speaker is an important component of the headset, and its performance will directly affect the performance of the headset. Obviously, the improvement of the speaker of the headset will also have a positive effect on creating a three-dimensional stereo with better Z-axis depth and its effects. Summary of the invention

[0009] The purpose of the present invention is to provide a diaphragm speaker which can effectively improve the sound quality of headphones.

[0010] To achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a diaphragm speaker, comprising a speaker unit, a diaphragm unit is arranged on one side of the speaker unit, characterized in that a sound wave channel unit penetrating the speaker unit is arranged on the speaker unit, the speaker unit comprises a magnet unit, a yoke unit is arranged on the edge of the magnet unit, the diaphragm unit is arranged on one side of the sound wave channel unit, and the speaker unit also comprises a diaphragm drive unit. The present invention discloses a diaphragm speaker in a speaker earmuff that cooperates with front and rear sound effect units and front and rear resonators, the diaphragm unit is arranged on one side of the sound wave channel unit and is combined with the sound wave channel unit to form a sound wave generation, transmission, communication and resonance system, and cooperates with the rear end sound resonator.

[0011] Preferably, the diaphragm unit comprises any one or more combinations of a single-layer diaphragm unit, a multi-layer composite diaphragm unit and a multi-layer combined diaphragm unit.

[0012] Preferably, the diaphragm drive unit comprises an annular voice coil unit arranged at the magnet unit, and the annular voice coil unit is connected to or separated from the diaphragm unit.

[0013] Preferably, the magnet unit is provided with an annular groove body, and the annular voice coil unit is arranged in the annular groove body.

[0014] Preferably, the sound wave channel unit is provided on the magnet unit, and an annular voice coil unit is provided on the inner wall of the sound wave channel unit.

[0015] Preferably, the diaphragm drive unit comprises a central vibration rod connected to the diaphragm unit, and the central vibration rod is located in the sound wave channel unit.

[0016] Preferably, the sound wave channel unit includes a sound hole unit arranged behind the diaphragm unit.

[0017] Preferably, the sound wave channel unit further includes a space structure arranged between the diaphragm unit and the sound hole unit.

[0018] Preferably, the sound wave channel unit includes at least one sound through hole unit arranged on the magnet unit and / or the yoke unit.

[0019] Preferably, the sound wave channel unit further comprises a sponge body which is arranged between the magnet unit and / or the yoke unit and passes through the speaker unit.

[0020] Preferably, the diaphragm unit is provided with a response force enhancement structure.

[0021] Preferably, the response force enhancement structure comprises a coating layer coated on the diaphragm unit.

[0022] Another object of the present invention is to provide a headset that can produce a three-dimensional stereo effect.

[0023] To achieve the above object, the present invention adopts the following technical solution: a headset that can produce a three-dimensional stereo effect using the above-mentioned diaphragm speaker, characterized in that:

[0024] The invention comprises a speaker cover and a speaker combination system arranged in the speaker cover, wherein the speaker cover comprises a front part, a rear part, a front end sound effect unit arranged at the front part, a front end sound resonator arranged at the front part, a rear end sound resonator arranged at the rear part and a rear end sound effect unit arranged at the rear part;

[0025] The speaker assembly system includes at least one front speaker disposed at the front of the speaker cover and at least one rear speaker disposed at the rear of the speaker cover;

[0026] At least one of the rear-end speakers is a diaphragm speaker, and the diaphragm speaker includes a speaker unit, and the speaker unit is provided with a sound wave channel unit penetrating the speaker unit, and two ends of the sound wave channel unit are respectively connected to the front-end sound resonator and the rear-end sound resonator;

[0027] a sound controller disposed in the speaker housing;

[0028] and a sound output unit connected to the speaker cover.

[0029] Preferably, the front or rear part of the speaker cover or any one or more of the front sound effect unit or the rear sound effect unit has a shape that matches the directivity or guidance of the sound waves; the front sound resonator and / or the rear sound resonator has a space that matches the directivity or guidance of the sound waves.

[0030] Preferably, the shape having directivity or guidance matching the sound waves includes any one or a combination of a horn arc, cone, straight or various curved shapes; the space having directivity or guidance matching the sound waves includes a space formed by any one or a combination of a horn arc, cone, straight or various curved shapes.

[0031] Preferably, the front-end speaker is the diaphragm speaker or the dynamic iron speaker.

[0032] Preferably, the front-end speaker is arranged in the sound output unit.

[0033] Preferably, the first central axis of the diaphragm unit of the front speaker is parallel to or coincides with the second central axis of the diaphragm unit of the rear speaker.

[0034] Preferably, the central axis of the diaphragm unit of the front speaker and the central axis of the diaphragm unit of the rear speaker are arranged at a certain angle to each other.

[0035] Preferably, the central axis of the diaphragm unit of the front speaker and the central axis of the diaphragm unit of the rear speaker are perpendicular to each other.

[0036] The front and back in the present invention are relative positions, and are not narrowly understood as only being arranged in front of and behind the sound output unit, that is, they do not only refer to the front and back arrangement of the sound output unit, the front speaker, and the rear speaker. The front speaker and the rear speaker can be determined based on the order in which the sound waves generated by the speakers at the same time reach the sound output unit. The one that arrives first is the front speaker, and the one that arrives later is the rear speaker. After the front speaker and the rear speaker are determined, the front, rear, front sound effect unit, rear sound effect unit, front sound resonator, and rear sound resonator can be determined accordingly.

[0037] The present invention provides a headset, in particular, an earbud headset including multiple speakers (i.e., sound drivers), wherein one or more speaker elements are placed at the front end of the earmuff, and another one or more speaker elements are placed at the rear end of the earmuff, and the front and rear ends of the earmuff respectively have front and rear sound effect units and front and rear resonators, and in the front and rear arrangement combination of the speakers, the external and internal multiple systems and structures and technologies and settings and coordination of the front and rear speakers better realize the maximization and optimization of the front and rear sound waves of the various front and rear speakers and achieve the best resonance, thereby producing a better XYZ three-dimensional stereo effect and a deeper sound reverberation space in the third dimension (Z axis) of the output of the low / mid / treble audio, creating a better and more realistic three-dimensional stereo and its effect.

[0038] In the front and back arrangement of multiple speakers, this patent uses multiple external / internal systems, structures, technologies, settings and coordination of multiple front and back speakers, especially the diaphragm unit, annular voice coil unit and sound wave channel unit of the speaker as a structure or system to coordinate and cooperate to achieve better front and back speaker sound wave maximization and optimization of communication, transmission and resonance, so as to produce better XYZ three-dimensional stereo effect and the third-dimensional (Z-axis) deep sound reverberation space of the output of low / mid / treble audio, and create a three-dimensional stereo with better Z-axis depth and its effect. Speakers are arranged front and back on the same axis or on different axes, and there are front and back sound effect units and resonance units in the speaker earmuffs. In the front and back arrangement of multiple speakers, the multiple structures of the diaphragm unit / annular voice coil unit and sound wave channel unit of the internal system of the front and back speakers cooperate to better achieve the maximization and optimization of the communication transmission of multiple front and back sound waves and achieve the best resonance and output. The above structure enables this headset to achieve better three-dimensional stereo and its effect of audio including bass, mid-range and treble.

[0039] On the one hand, the earphone includes a speaker cover (earmuff), which is provided with a unit (speaker combination system) including multiple speakers distributed in a straight line, and these speakers ensure that at least one speaker is arranged in front of at least one other speaker, and the front and rear speakers share a central axis or different central axes corresponding to the sound waves. The earmuff of the earphone also includes a front sound effect unit arranged at the front end of the earmuff and a front sound resonator arranged at the front end of the earmuff similar to the front sound resonance unit or the front sound echo area. The rear end of the earmuff is provided with a rear sound resonator and a rear sound effect unit similar to the rear sound resonance unit or the rear sound echo area. And in the front and rear arrangement combination of multiple speakers, the external / internal multiple structures, technologies and settings of the front and rear speakers, especially the diaphragm unit, the annular voice coil unit and the sound wave channel unit of the speaker are coordinated as a structure or system to better realize the maximization and optimization of the communication and resonance of multiple front and rear sound waves. The earmuff of the earphone is designed to be a uniform or irregular structure so as to correspond to the front and rear sound effect units and the front and rear sound resonators. A sound controller similar to a sound control unit or a sound configuration unit, a sound output unit connected to the earmuff, and a sound balance hole unit are also provided in the earmuff, so that the sound effect, output and sound direction of the earphone can be better three-dimensional stereo in three dimensions (XYZ axes).

[0040] On the one hand, a unit including a plurality of speakers is arranged in an earmuff unit of a headset. The unit includes a small speaker arranged at the front end of the earmuff and a large speaker arranged at the rear end of the earmuff, and the speakers are arranged aligned on a shared central axis or arranged crosswise on different central axes. The small speaker is arranged at the front end and the large speaker is arranged at the rear end in order to form a sufficient sound reverberation area to achieve a three-dimensional (XYZ) stereo effect, that is, a real three-dimensional stereo effect. The speakers at the front end and the speakers at the rear end cooperate together to achieve a two-dimensional (XY) stereo width effect, while the large speakers at the rear end and the small speakers at the front end cooperate together to create a third dimension (Z) of depth sound for the XYZ three-dimensional stereo sound effect and XYZ three-dimensional stereo space of the headset.

[0041] At the same time, in the arrangement and combination of multiple speakers of the present invention, the external and internal multiple systems, structures, technologies and settings of the front and rear speakers, especially the coordinated and synchronous cooperation of the diaphragm unit, annular voice coil unit and sound wave channel unit of the speaker are more conducive to maximizing and optimizing the communication and resonance of the front and rear sound waves, so as to produce deeper and better three-dimensional stereo with Z-axis depth.

[0042] On the one hand, in the front-to-back arrangement of multiple speakers in the present invention, the diaphragm of the internal structure of the front and rear speakers has a sound wave transmission resonance and cooperates synchronously with various through-hole units at the rear end to achieve maximum and optimized communication, transmission and resonance of the front and rear sound waves, which is more conducive to producing deeper and more realistic three-dimensional stereo with Z-axis depth.

[0043] At the same time, in the front and back arrangement combination of multiple speakers of the present invention, the diaphragm of the internal structure of the front and rear end speakers has the function of generating, transmitting and resonating sound waves and synchronously cooperating with various through-hole units at the rear end to achieve maximum and optimized communication, transmission and resonance of the front and rear end sound waves, which is more conducive to producing deeper and more realistic three-dimensional stereo with Z-axis depth.

[0044] At the same time, in the arrangement and combination of multiple speakers of the present invention, the diaphragm unit of the internal structure of the front and rear speakers has the function of generating, transmitting, transmitting and resonating sound waves, and synchronously cooperating with various sound-transmitting units, rear-end sound effect units and rear-end sound resonators at the rear end to achieve better optimization of the front and rear end sound waves, maximize and optimize the communication, transmission and resonance, which is more conducive to producing deeper and more realistic three-dimensional stereo with Z-axis depth.

[0045] There are many ways to get better three-dimensional stereo sound effects for headphones. The front and rear speakers and their diaphragm units and various sound transmission units can be of different sizes or the same size, and can be arranged front and back on a shared central axis to cooperate with the sound effect unit and the resonance unit to produce a more balanced and average three-dimensional stereo sound wave, sound effect and output.

[0046] Front and rear speakers and their diaphragm units of different sizes or the same size can be arranged front and back on different central axes, and all the sound effect units, all resonance units and sound controllers of the external structure of the front and rear speakers can work together synchronously to produce better three-dimensional (XYZ) stereo sound waves, effects and output.

[0047] There are many ways to get better three-dimensional stereo sound effects for headphones. The rear-end through-sound or through-hole units of the internal structure of the front and rear speakers can be of various structures, shapes, positions, arrangements and sizes, so as to simultaneously and synchronously cooperate with the transmission front and rear sound waves of the front and rear speaker diaphragm units and cooperate with all the sound effect units and all the resonance units of the external structure of the front and rear speakers to produce balanced, averaged better three-dimensional stereo sound waves, sound effects and output.

[0048] Another speaker arrangement of the present invention also includes setting the front and rear speakers and their diaphragm units at a certain angle to each other. For example, the front speaker can be set on a straight line in the direction of the earphone, and can be set at a specific angle with the direction of the rear speaker, 0 to 90 degrees, preferably 25 degrees. The front speaker and the rear speaker can also be set as a whole at an angle to the horizontal line, for example, at various angles in the longitudinal direction, transverse direction, and transverse direction to the horizontal line. This arrangement of setting the front and / or rear speakers separately or as a whole at an angle or simultaneously setting the front and rear speakers and their diaphragm units at multiple angles can form better three-dimensional sound waves, effects and outputs.

[0049] In the front-to-back arrangement of multiple speakers of the present invention, the diaphragm units of the front and rear end speakers have various structures that generate and transmit sound waves and cooperate synchronously with the through-hole units of various transmissions and resonances at the rear end. They can be closely connected to each other and can be coaxial and in the same direction, non-coaxial, in different directions, and at different angles, so as to achieve better optimization of the communication, transmission and resonance of the front and rear end sound waves, which is more conducive to producing deeper three-dimensional stereo sound with Z-axis depth.

[0050] The shape of the earmuffs of the headphones is directly related to the front-end sound effect unit that cooperates with the front-end speakers outside and / or inside the earmuffs. The shape of the earmuffs, usually called the outside of the sound effect wall / unit, can be designed to be regular or irregular to cooperate with the internal sound effect unit. The external front-end sound effect unit and the internal front-end sound effect unit can be just one unit or multiple units that jointly include the external wall / surface and the internal wall / surface, or they can be different units, or they can be interconnected or independent of each other. The front-end sound effect unit cooperates with the sound waves generated by multiple speakers arranged on the same axis or different axes, or cooperates with multiple speakers at the front and rear ends set at an angle to achieve a three-dimensional sound effect and output. The same principle can also be applied to the rear-end sound effect unit.

[0051] Furthermore, the shape of the earmuff of the headset may be designed only for appearance, and may be directly related, partially related, or not directly related to the various components inside the earmuff. For example, the shape of the earmuff may include a regular or irregular front or rear part or top or bottom part or left or right part, or a regular or irregular appearance design with multiple parts and multiple levels. In other words, the design of the shape of the earmuff may be related and consistent with the settings of the front and rear speakers, or may be irrelevant and inconsistent, or may be partially related and partially consistent. The design of the shape of the earmuff may be free and varied.

[0052] The front and rear sound resonators are spaces or cavities or areas at the front and rear of the speaker cover that cooperate with the front and rear speakers to produce sound (sound wave) resonance, resonance or harmony. They are usually one unit or multiple units on the walls / surfaces of the front and rear sound effect units. They can also be different units, interconnected units, or independent units that form a sound wave resonance space or area.

[0053] The sound controller cooperates with multiple speakers at the front and back ends to connect and divide the frequencies, and analyzes, manages and configures all digitized original music data to the front and back end speakers, generating sound waves that run in the front sound effect unit, sound resonator, front end of the earmuff, back end of the earmuff and rear sound effect unit and rear sound resonator, creating a wider stereo in two dimensions and stereo in the third dimension at the same time.

[0054] The sound output unit is arranged at the front end of the speaker cover to output three-dimensional stereo sound, and at the same time, the inner wall channel of the sound output unit transmits and resonates sound waves.

[0055] In short, the present invention arranges multiple front and rear speakers and their diaphragm units, annular voice coil units and sound wave channel units front and back on the same axis or on different axes to produce, transmit and maximize the front and rear sound waves to create a realistic three-dimensional stereo space or effect, thereby obtaining high stereo sound quality with XYZ three-dimensional stereo effect and output, which has wider sound in two dimensions (XY) and real-time stereo in the third dimension (Z) depth.

[0056] Another aspect of the present invention is that a rear-end speaker and its diaphragm unit, annular voice coil unit, sound wave channel unit and rear-end resonance system are arranged behind the front-end speaker to produce stereo sound waves with maximized and optimized third-dimensional (Z) depth for stereo effects and wider stereo in two dimensions (XY) for XYZ three-dimensional stereo effects.

[0057] Another aspect of the present invention is to provide a diaphragm drive unit including a diaphragm unit and an annular voice coil unit and / or a sound wave channel unit in the internal system of the speaker to produce stereo sound waves with maximized and optimized third-dimensional (Z) depth for stereo effects and wider stereo in two dimensions (XY) for XYZ three-dimensional stereo effects.

[0058] Another object of the present invention is to provide an earphone having a plurality of speakers arranged in a front-to-back arrangement (i.e., along the same axis or different parallel axes), which cooperate with a sound wave, a sound wave generating and transmitting unit, a sound wave transmitting unit, a sound effect unit, a sound resonator, a sound controller, a sound balance hole unit and a sound output unit to ensure the simultaneous synchronization of the maximized and optimized XYZ three-dimensional stereo effect and output.

[0059] Another object of the present invention is to provide a headset with earmuffs of different shapes or functions. The earmuffs are provided with front and rear sound effect units, front and rear sound resonators and sound balance hole units of different shapes and functions, which cooperate with a plurality of front and rear speakers and their diaphragm units, annular voice coil units and sound wave channel units arranged on the same axis or different axes to obtain better stereo space and effects in the three dimensions of XYZ and maximization and optimization. The sound resonator can provide better harmony.

[0060] Another object of the present invention is to provide an earphone having front-end and rear-end speakers, and the front-end or rear-end speakers and their diaphragm units, annular voice coil units, sound wave channel units and rear-end sound resonators are arranged at a certain angle so that the earphone can maximize and optimize the XYZ three-dimensional stereo space and effect.

[0061] Another object of the present invention is to provide an earphone with multiple front and rear speakers of different numbers, which are arranged front and back on the same axis or different axes, or an earphone with multiple front and rear speakers of different sizes, for example, a small speaker is arranged at the front and a large speaker is arranged at the rear, for example, two small speakers are arranged at the front and a large speaker is arranged at the rear, or for example, all the front or rear speakers and their diaphragm units are the same size or different sizes, arranged in the same direction, arranged in different directions, arranged relative to each other, arranged in an offset manner, and so on, in order to achieve a better and deeper third-dimensional stereo effect.

[0062] Another object of the present invention is to provide an earphone with a plurality of front and rear speakers of different numbers, which are arranged front and back on the same axis or different axes, or an earphone with a plurality of front and rear speakers of different sizes, for example, a small speaker is arranged at the front end and a large speaker is arranged at the rear end, and the front small speaker is arranged in the sound output channel directly connected to the front shell unit, as another front and rear speaker front and rear speaker front and rear arrangement combination series combination comprising the rear diaphragm unit, annular voice coil unit and sound wave channel unit of the front and rear speakers and their related parts combination structure. The advantages of such a design are that the front speaker is moved forward to the frontmost sound output channel, the overall volume is reduced, and it is more in line with the human body structure and wearing comfort of the human ear; the front speaker is moved forward, the front sound wave is closer to the eardrum in the ear canal of the human ear, and the sound effect is more direct and good; the space of the front sound effect unit and the front sound resonator is also moved forward accordingly, the resonance space of the front and rear sound waves is enlarged and lengthened, and the distance between the front and rear speakers is also lengthened accordingly, and the rear diaphragm unit, the annular voice coil unit and the sound wave channel unit extend more to the back in the space of the front and rear ends, which is more conducive to the maximum optimization of the resonance and direct transmission of the front and rear sound waves. The Z-axis range of the rear-end sound wave resonance and transmission is increased to the maximum range, and the Z-axis depth is lengthened to the maximum depth, thereby producing XYZ three-dimensional stereo with maximized and optimized deepest depth effect.

[0063] Another object of the present invention is to maximize the front and rear sound wave transmission resonance and output by configuring the front and rear multi-layer structure in a very limited small space, and to coordinate the diaphragm structure and layers and materials of the front and rear speakers, the diaphragm unit structure, the annular voice coil unit, and the multi-through-hole structure (sound wave channel unit) to simultaneously and synchronously generate three-dimensional stereo with maximum Z-axis depth in the front and rear sound effect units and the front and rear sound resonators. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] Other objects and features of the present invention can be more clearly understood from the following detailed description and the accompanying drawings. However, the purpose of designing these drawings is only to illustrate and not to limit the present invention. In these accompanying drawings, similar reference characters in different views represent similar elements.

[0065] Figure 1 It is a side view of the earphone according to the first embodiment of the present invention.

[0066] Figure 1A yes Figure 1 A side view of the main components associated with the headset shown.

[0067] Figure 1AA yes Figure 1 A rear side view of the main components associated with the headset shown.

[0068] Figure 1AAA yes Figure 1 Side view of the diaphragm speaker of the headphones shown.

[0069] Figure 1B FIG. 4 is a side view of an earphone according to another embodiment of the present invention.

[0070] Figure 1C FIG. 4 is a side view of an earphone according to another embodiment of the present invention.

[0071] Figure 1D It is a side view of the main components of an earphone according to an embodiment of the present invention.

[0072] Figure 1E It is a side view of the main components of an earphone according to another embodiment of the present invention.

[0073] Figure 1F yes Figures 1 to 5A A stereo sound wave / electroacoustic frequency sound wave graph related to headphones in the illustrated embodiment.

[0074] Fig. 1FF yes Figures 1 to 5A A stereo sound wave / electroacoustic frequency sound wave graph related to headphones in the illustrated embodiment.

[0075] Figure 1G yes Figures 1 to 5A A stereo sound wave / electroacoustic frequency sound wave graph related to headphones in the illustrated embodiment.

[0076] Figure 2 FIG. 4 is a side view of an earphone according to another embodiment of the present invention.

[0077] Figure 2A yes Figure 2 A side view of the main components associated with the headset is shown.

[0078] Figure 3FIG. 4 is a side view of an earphone according to another embodiment of the present invention.

[0079] Figure 3A yes Figure 3 A side view of the main components associated with the headset is shown.

[0080] Figure 3AA yes Figure 3 A rear side view of the main components associated with the headset shown.

[0081] Figure 4 FIG. 4 is a side view of an earphone according to another embodiment of the present invention.

[0082] Figure 4A yes Figure 4 Side view of the main components related to the headset shown.

[0083] Figure 4AA yes Figure 4 A rear side view of the main components associated with the headset shown.

[0084] Figure 5 FIG. 4 is a side view of an earphone according to another embodiment of the present invention.

[0085] Figure 5A yes Figure 5 Side view of the main components related to the headset shown. DETAILED DESCRIPTION

[0086] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0087] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described below in conjunction with the accompanying drawings and specific embodiments. However, the protection scope of the present invention is not limited to the described embodiments. On the contrary, the present invention includes all modifications, variations and equivalents that fall within the scope of the attached claims.

[0088] The present invention discloses a diaphragm type loudspeaker in a loudspeaker earmuff in cooperation with front and rear sound effect units and front and rear resonators, comprising a loudspeaker unit, a diaphragm unit is arranged on one side of the loudspeaker unit, characterized in that a sound wave channel unit penetrating the loudspeaker unit is arranged on the loudspeaker unit, the loudspeaker unit comprises a magnet unit, a yoke unit is arranged on the edge of the magnet unit, the diaphragm unit is arranged on one side of the sound wave channel unit, and the loudspeaker unit further comprises a diaphragm driving unit. The diaphragm unit is arranged on one side of the sound wave channel unit and is combined with the sound wave channel unit to form a sound wave generation transmission communication and resonance system, and cooperates with the rear end sound resonator.

[0089] Specifically, the diaphragm unit includes any one or more combinations of a single-layer diaphragm unit, a multi-layer composite diaphragm unit, and a multi-layer combined diaphragm unit. A single-layer diaphragm unit refers to a single-layer diaphragm; a multi-layer composite diaphragm unit refers to a multi-layer diaphragm combined together; and a multi-layer combined diaphragm unit refers to a multi-layer diaphragm that is independently arranged, with the diaphragms spaced apart or adjacent diaphragms in contact.

[0090] Specifically, the diaphragm driving unit includes an annular voice coil unit arranged at the magnet unit, and the annular voice coil unit is connected to or separated from the diaphragm unit.

[0091] Specifically, the magnet unit is provided with an annular groove body, and the annular voice coil unit is arranged in the annular groove body.

[0092] Specifically, the sound wave channel unit is provided on the magnet unit, and an annular voice coil unit is provided on the inner wall of the sound wave channel unit.

[0093] Specifically, the diaphragm drive unit includes a central vibration rod connected to the diaphragm unit, and the central vibration rod is located in the sound wave channel unit.

[0094] Specifically, the sound wave channel unit includes a sound hole unit arranged behind the diaphragm unit.

[0095] Specifically, the sound wave channel unit also includes a space structure arranged between the diaphragm unit and the sound hole unit.

[0096] Specifically, the sound wave channel unit includes at least one sound through hole unit arranged on the magnet unit and / or the yoke unit.

[0097] Specifically, the sound wave channel unit also includes a sponge body which is arranged between the magnet unit and / or the yoke unit and passes through the speaker unit.

[0098] Specifically, the diaphragm unit is provided with a response force enhancement structure.

[0099] Specifically, the response force enhancement structure includes a coating layer coated on the diaphragm unit.

[0100] In order to achieve the purpose of the present invention, the present invention also discloses a headset that uses a diaphragm speaker and can produce a three-dimensional stereo effect, characterized in that:

[0101] The invention comprises a speaker cover and a speaker combination system arranged in the speaker cover, wherein the speaker cover comprises a front part, a rear part, a front end sound effect unit arranged at the front part, a front end sound resonator arranged at the front part, a rear end sound resonator arranged at the rear part and a rear end sound effect unit arranged at the rear part;

[0102] The speaker assembly system includes at least one front speaker disposed at the front of the speaker cover and at least one rear speaker disposed at the rear of the speaker cover;

[0103] At least one of the rear-end speakers is a diaphragm speaker, and the diaphragm speaker includes a speaker unit, and the speaker unit is provided with a sound wave channel unit penetrating the speaker unit, and two ends of the sound wave channel unit are respectively connected to the front-end sound resonator and the rear-end sound resonator;

[0104] a sound controller disposed in the speaker housing;

[0105] and a sound output unit connected to the speaker cover.

[0106] Specifically, the front or rear part of the speaker cover or any one or more of the front sound effect unit or the rear sound effect unit has a shape that matches the directivity or guidance of the sound waves; the front sound resonator and / or the rear sound resonator has a space that matches the directivity or guidance of the sound waves.

[0107] Specifically, the shape with directivity or guidance that matches the sound waves includes any one or a combination of a horn arc, cone, straight shape, or various curved shapes; the space with directivity or guidance that matches the sound waves includes a space formed by any one or a combination of a horn arc, cone, straight shape, or various curved shapes.

[0108] Specifically, the front-end speaker is the diaphragm speaker or the dynamic iron speaker.

[0109] Specifically, the front-end speaker is arranged in the sound output unit.

[0110] Specifically, the first central axis of the diaphragm unit of the front speaker is parallel to or coincides with the second central axis of the diaphragm unit of the rear speaker.

[0111] Specifically, the central axis of the diaphragm unit of the front speaker and the central axis of the diaphragm unit of the rear speaker are arranged at a certain angle to each other.

[0112] Specifically, the central axis of the diaphragm unit of the front speaker and the central axis of the diaphragm unit of the rear speaker are perpendicular to each other.

[0113] The front and back in the present invention are relative positions, and are not narrowly understood as only being arranged in front of and behind the sound output unit, that is, they do not only refer to the front and back arrangement of the sound output unit, the front speaker, and the rear speaker. The front speaker and the rear speaker can be determined based on the order in which the sound waves generated by the speakers at the same time reach the sound output unit. The one that arrives first is the front speaker, and the one that arrives later is the rear speaker. After the front speaker and the rear speaker are determined, the front, rear, front sound effect unit, rear sound effect unit, front sound resonator, and rear sound resonator can be determined accordingly.

[0114] Attached Figures 1 to 1E The present invention demonstrates an earphone 1000, which may be the left or right part of an in-ear earphone having a plurality of speakers disposed therein and capable of providing a three-dimensional stereo effect, and also demonstrates a speaker cover unit 1006 including a plurality of front / rear speakers 1018A and 1018B that can be used to provide an XYZ three-dimensional stereo effect of low / mid / high frequency audio. Figures 1 to 1E In the illustrated embodiment, the front / rear speakers 1018A and 1018B are arranged front to back along the same axis or on different axes, and may also share the central axis 1088.

[0115] The speaker cover unit designed for the in-ear earphone 1000, i.e., the ear cover 1006, has a speaker (sound driver) 1018A and 1018B arranged front and back at the front and rear ends, and the front speaker 1018A, a front sound effect unit 1032 and a front sound resonator 1036 / 1036A form an array and cooperate with each other synchronously; the rear speaker 1018B, a rear sound effect unit 1032B and a rear sound resonator 1036B form an array and cooperate with each other synchronously. The front and rear sound effect units 1032 / 1032B can be designed to be various shapes that match the directivity or guidance of sound waves, for example, various matching speaker arcs or various cones or various straight shapes or various curved shapes or various combinations of the above, and can also produce sound effects of rebound and reverberation of sound waves with better directivity and guidance. The front and rear end sound resonance units 1036 / 1036B can be designed to match various shapes and / or spaces that match the directivity or guidance of sound waves, such as various horn arcs or various cones or various straight shapes or various curved shapes or various mixtures of the above, and can also produce sound resonance at the same time. In order to form the front and rear arrays of the above-mentioned front and rear ends with these two speakers (dual sound drivers), one speaker 1018A is set at the front end of the earphone to process the treble frequency part of the sound, and the other speaker 1018B is set at the rear end of the earphone to process the bass and mid-range frequencies of the sound. Conversely, the front speaker 1018A can process the bass, and the rear speaker 1018B can control the mid-range and treble frequency parts of the sound. In order to process different sound frequencies, many different speaker arrangements can be designed.

[0116] The small high-precision driver 1018A is directly set at the front end of the earphone, and the large high-precision driver 1018B and a sound controller 1080 / 1080A that can achieve strong bass and resonance frequency management are arranged at the rear end of the small driver 1018A. In this embodiment, the sound controller 1080 / 1080A is a frequency configuration and connection unit for multiple speakers. The arrangement of dual speakers 1018A and 1018B at the front and rear ends of the earphone creates a realistic sound transmission system with stage effects or an XYZ three-dimensional (three-dimensional) stereo effect and space for the earphone, because the dual speakers 1018A and 1018B produce stereo in a wide lateral manner on the XY axis of two-dimensional sound, and at the same time, the large speaker 1018B at the rear end transmits very strong bass and mid-range from the rear end to the front end, and through cooperation with the front speaker 1018A, the front and rear end sound effect units 1032 / 1032B and the front and rear end sound units with sound wave directivity or guidance are connected. In the sound resonator 1036 / 1036B, the front and rear sound waves 1018AW / 1018BW / 1018ABW / 1018BBW of the front and rear speakers 1018A / 1018B pass through the diaphragm unit 1052B / 1052BB, the annular voice coil unit 1054B and the center sound hole unit 1058B of the rear speaker and cooperate with the rear sound resonator 1036B to produce, communicate and resonate, and provide a third dimension (Z-axis depth) stereo in a deep vertical manner, thereby obtaining a better and more realistic stereo surround effect in three dimensions (XYZ axes) including low / mid / treble audio.

[0117] Different speaker configurations include: front and rear speakers facing the same direction, front and rear speakers facing the same direction and at an angle or offset, front and rear speakers facing each other, and front and rear speakers facing each other and at an angle or offset.

[0118] Therefore, listeners can hear strong three-dimensional stereo sound from the rear end to the front end with a sense of depth in the Z axis in powerful sound waves. At the same time, listeners can hear realistic and detailed 3D surround sound from the front, left, right, rear, and from all directions through the XY axis. This stereo sound ensures full-range sound including low / mid / high-frequency audio is played back in three dimensions (three dimensions, XYZ).

[0119] Three-dimensional stereo is to obtain a three-dimensional (XYZ) sound space and effect. The audio of the three sounds of low / mid / treble can only produce different volumes and contents, which may be in the sound space of two dimensions of XY, or in the sound space of three dimensions of XYZ. The stereo depth of the Z axis is the main determinant of the XYZ three-dimensional stereo space and effect. Only when the stereo depth of the Z axis is obtained, the audio of the three sounds of low / mid / treble can be obtained simultaneously and synchronously to form the XYZ three-dimensional sound space and effect. The CN201110063904.5 patent has a detailed and specific description of XYZ three-dimensional stereo and its effects.

[0120] The preferred setting of the sizes of the front-end speaker 1018A and the rear-end speaker 1018B is: to set a small sound driver at the front and a large sound driver at the rear, or to set sound drivers of the same size at the front and rear, or to set a large sound driver at the front and a small sound driver at the rear, and so on, depending on the situation.

[0121] For application Figures 1 to 5A In the different earphone embodiments shown, the arrangement, design, function, shape, form, size, structure, position, type and material of the dual-drive front / rear array unit composed of the front and rear speakers 1018A / 1018B and their front and rear diaphragm units 1052A / B / BB, the voice coil unit 1054A / B and the sound hole unit 1058A / B can be changed as needed.

[0122] Figures 1 to 1E Various external / internal structures and systems of the in-ear headphone 1000 are demonstrated in detail.

[0123] like Figure 1-1EAs shown in the various enlarged views of the earphone 1000, the small speaker 1018A and the large speaker 1018B work together to form a dual-drive front and rear array unit. The front sound waves 1018AW and the rear sound waves 1018ABW transmitted by the front speaker 1018A may be high-frequency audio. The front sound waves 1018BW and the rear sound waves 1018BBW transmitted by the rear speaker 1018B may be bass and mid-range audio. The front and rear sound waves 1018AW / 1018BW and 1018ABW / 1018BBW are generated and transmitted to the rear sound resonator through the rear diaphragm unit 1052B / 1052BB, the annular voice coil unit 1054B and the rear center sound hole unit 1058B, and the resonance and output together constitute a three-dimensional stereo effect in the XYZ three axes, in other words, a three-dimensional (XYZ) stereo including low / mid / high-frequency audio. The sound wave lines 1018AW / 1018ABW and 1018BW / 1018BBW can be arranged in parallel at equal distances, can be crossed, or can be arranged at different angles according to the arrangement position of the front and rear speakers.

[0124] There is a spacing 1084 between the external structures of the speakers 1018A and 1018B. There is a sound depth 1086 between the front speaker sound waves 1018AW / 1018ABW and the rear speaker sound waves 1018BW / 1018BBW. The sound depth or the front and rear sound wave distance depth 1086 is a key factor in a realistic three-dimensional stereo effect with a Z-axis effect. The sound depth or the front and rear sound wave distance depth 1086 is directly related to the spacing 1084 and cooperates with the front and rear sound effect units 1032 / 1032B and the front and rear sound resonance units 1036 / 1036A / 1036B to obtain the sound of depth in the third dimension along the Z axis. It can also be understood that the sound depth or the front and rear sound wave distance depth 1086 and the spacing 1084 cause a time difference in the arrival of multiple sound waves at the sound output port due to different distances, thereby generating front and rear sound waves.

[0125] The position of the speakers 1018A and 1018B is very important. A more suitable arrangement is to arrange them in a front and rear array along a shared axis, such as the same central axis 1088. Figure 1The embodiment also represents the horizontal axis of the earmuff 1006. The axis 1088 is the center point line of the multiple speakers 1018A and 1018B, and is also the center axis of the sound waves 1018AW / 1018ABW and 1018BW / 1018BBW of the front and rear speakers 1018A and 1018B, and is also the center axis of the rear diaphragm unit 1052B / 1052BB and the annular voice coil unit 1054B and the rear center sound hole unit 1058B of the rear speaker 1018B to generate and transmit sound wave resonance. These front and rear speakers 1018A and 1018B are arranged front and back and are at a right angle of 90 degrees to the axis 1088.

[0126] The loudspeakers are arranged along the same axis 1088 so that the sound waves 1018AW / 1018ABW and 1018BW / 1018BBW and the depth 1086 are strengthened at the same waveform, wave rate and wave distance to obtain a uniform and average three-dimensional stereo effect. Similarly, the front and rear array arrangement of the loudspeakers with the same central axis 1088 also makes the sound focus and the sound wave lines of the sound waves 1018AW / 1018ABW and 1018BW / 1018BBW evenly and evenly distributed in the central area of ​​the three-dimensional stereo space.

[0127] More importantly, the sound wave depth 1086 determines the three-dimensional stereo depth expansion of the dual-drive array unit 1018A / 1018B arranged in front of and behind the Z axis, and obtains the sound effect on the XYZ axis. If the depth 1086 is too large, the three-dimensional stereo depth expansion of the dual-drive array unit 1018A / 1018B arranged in front of and behind the Z axis will overreact. If the depth 1086 is too small, the three-dimensional stereo depth expansion of the dual-drive array unit 1018A / 1018B arranged in front of and behind the Z axis will be weakened. Therefore, a large number of experiments are required to determine the distance depth 1086 at the exact position for different types of speakers, which is not only for the sound effect or expansion of the Z axis, but also helps the sound effect or expansion of the XY axis.

[0128] First, the depth 1086 value needs to be set accurately to achieve better sound effects in all three dimensions along the X, Y and Z axes.

[0129] Secondly, at the same time, when the front and rear sound waves 1018AW / 1018ABW and 1018BW / 1018BBW of the front and rear speakers work together in the front and rear sound resonators 1036 / 1036A / 1036B, the depth 1086 will be affected. The front and rear sound resonators 1036 / 1036A / 1036B obtain a certain sound reverberation / harmony effect by the external shape and internal space. Due to the natural properties of sound waves, echoes, re-echoes and sound gravity fields, the front and rear sound effect units 1032 / 1032B and sound resonators 1036 / 1036A / 1036B of different sizes, shapes and structures will form different three-dimensional stereo reverberations and harmony effects. If the sound resonator 1036 / 1036A / 1036B is too tight or too small for the speaker sound waves 1018AW / 1018ABW and 1018BW / 1018BBW to work, the depth 1086 will be distorted. If the sound resonator 1036 / 1036B is too loose or too large for the speaker sound waves 1018AW / 1018ABW and 1018BW / 1018BBW to work, the depth 1086 will be weakened or ineffective.

[0130] Again, when the speaker sound waves 1018AW / 1018ABW and 1018BW / 1018BBW work in conjunction with the front and rear sound effect units 1032 / 1032B, the depth 1086 may be affected. The sound effect unit 1032 / 1032B is formed by the combination of an external shape and an internal shape to obtain a certain sound effect, usually a shell that produces sound effects, or an internal sound effect component or wall, which can be connected units or different units. If the sound effect unit 1032 / 1032B is too straight or too curly for the speaker sound waves 1018AW / 1018ABW and 1018BW / 1018BBW to work, the depth 1086 may be distorted or weakened or the effect is not good.

[0131] There is a very small, limited and closed sound working space in the speaker housing 1006. Therefore, in this very limited sound working space, the speakers 1018A and 1018B generate their own sound waves 1018AW / 1018ABW and 1018BW / 1018BBW, the same axis 1088 in the front and rear arrays, the depth 1086, the spacing 1084, the front and rear sound effect units 1032 / 1032B, the front and rear sound resonators 1036 / 1036A / 1036B and the sound output unit 1020 are all very important, and they work together and produce three-dimensional stereo in the XYZ dimension in real time.

[0132] Since sound waves are three-dimensional and have directionality or guidance, when the front sound waves 1018AW and 1018BW fluctuate to very close to the front area 1032 / 1036 and the front end 1006A where the earmuff 1006 is connected to the sound output unit 1020, the rear sound waves 1018ABW and 1018BBW fluctuate to very close to the rear end 1006B of the earphone cover 1006 having the rear end sound resonator 1036B and the rear end sound effect unit 1032B. Because the loudspeaker is mainly used to transmit sound forward, the front sound waves 1018AW and 1018BW will act on and bounce back from the front sound effect unit 1032 and the front sound resonator unit 1036 / 1036A with a sound wave directivity design structure, and pass through the rear diaphragm unit 1052B / 1052BB, the annular voice coil unit 1054B and the rear center sound hole unit 1058B (as a structure or system) of the rear speaker 1018B to generate communication, transmission and resonance, thereby forming the return rear sound waves 1018ABW and 1018BBW that enter the rear sound effect unit 1032B and the rear sound resonator 1036B with a sound wave directivity design structure for communication, transmission and resonance and output. However, the speaker is designed to transmit sound forward and backward, so the rear sound waves 1018ABW and 1018BBW resonated in the rear sound effect unit 1032B and the rear sound resonator 1036B of the rear end 1006B of the earmuff are transmitted to the front direction and directly emerge from the front sound output unit 1020. The hole 1006C is set at the front and rear ends of the earmuff 1006 to balance the air pressure of the sound waves at the front and rear ends. The speaker even transmits sound in every direction, such as 360 degrees, and also has directivity or guidance. The rear sound waves 1018ABW and 1018BBW are generated and pass through the rear diaphragm unit 1052B / 1052BB, the annular voice coil unit 1054B and the rear center sound hole unit 1058B, and fluctuate to the rear end 1006B of the earmuff, and form the Z-axis depth effect of the rear sound resonance by synchronously cooperating with the rear sound resonator 1036B and the rear sound effect unit 1032B and transmitting forward to generate XYZ three-dimensional stereo sound. The rear sound resonator 1036B can be a sound resonator area in the rear end 1006B or a rear sound resonance unit, and also includes the inner cavity space area of ​​the rear button unit 1016. One or more rear holes 1006C on the earphone cover release the air pressure of the rear sound waves 1018ABW and 1018BBW to better balance the front and rear reverberations and sound output to obtain a three-dimensional stereo effect. The rear end sound effect unit 1032B includes the inner wall and outer wall of the sound effect unit 1032B within the rear end portion 1006B and the inner wall and outer wall of the rear button component 1016 at the rear end.

[0133] Therefore, the rear diaphragm unit 1052B / 1052BB and the annular voice coil unit 1054B of the rear speaker are directly connected to the rear sound hole unit 1058B and then directly connected to the rear sound effect unit 1032B and the rear sound resonator 1036B to form an overall circulation system in which the front and rear sound waves synchronously generate transmission resonance output to produce the maximum quantized Z-axis sound output for a better XYZ three-dimensional stereo effect.

[0134] The rear end hole unit 1006C may be disposed at the front end of the earmuff 1006, on the side, or at the bottom of the earphone, and may be of any type, size, and shape as appropriate.

[0135] For earmuffs 1006 of different shapes and functions, front and rear end sound effect units 1032 / 1032B with different shapes and sound wave guiding functions, front and rear end sound resonators 1036 / 1036B that can serve as harmony units, and harmony sound balance hole unit 1006C can be designed. They can be combined with multiple speakers arranged at the front and rear ends on the same axis or different axes to obtain better stereo space and effects in three dimensions (XYZ).

[0136] The shape of the speaker cover 1006 of the earphone is directly related to the front and rear sound effect units 1032 / 1032B and the front and rear sound resonators 1036 / 1036B outside and / or inside the speaker cover. Under comprehensive consideration of the directivity or guidance of sound waves, the shape of the speaker cover 1006, including the front end 1006A and the rear end 1006B, usually referred to as the outside of the sound effect wall / unit, can be designed to be regular or irregular, and can also be designed to be various shapes and / or spaces that match the directivity or guidance of sound waves, such as various matching horn arc shapes or various cone shapes or various straight shapes or various curved shapes or various mixtures of the above, to match the sound effect unit 1032 / 1032B inside. The external front and rear end sound effect units and / or the internal front and rear end sound effect units 1032 / 1032B may be just one unit that includes the external wall / surface and the internal wall / surface together, or may be different units or walls, or multiple connected or independent units, or may be designed to be various shapes and / or spaces that match the directivity or guidance of the sound waves, such as various matching horn arc shapes or various cone shapes or various straight shapes or various curved shapes or various combinations of the above. The front and rear end sound effect units 1032 / 1032B cooperate with the sound waves generated by multiple speakers arranged on the same axis or different axes, or cooperate with multiple speakers at the front and rear ends that are arranged at an angle to achieve better three-dimensional sound effects and output. The same principle can also be applied to the rear end sound effect unit 1032B.

[0137] The front end 1006A of the speaker cover 1006 of the earphone includes a sound output unit 1020, a front speaker 1018A, a front sound effect unit 1032, a front sound resonator 1036 / 1036A, etc. The rear end 1006B of the speaker cover 1006 of the earphone includes a rear speaker 1018B, a rear sound effect unit 1032B, a rear sound resonator 1036B, a sound balance hole 1006C, a sound controller 1080, etc. The sound controller 1080 can also be arranged in the front end 1006A.

[0138] At the same time, taking into account the directivity or guidance of the sound waves, the front end 1006A of the speaker cover 1006 of the headset can be set as a front sound resonator 1036 / 1036A of a front sound resonance unit or a front sound resonator area that matches the front speaker 1018A, and also includes the space between the front speaker 1018A and the front sound output unit 1020 and the area between the front speaker 1018A and the rear speaker 1018B, and also includes the side wall of the front unit 1006A of the speaker cover and its corresponding space, which can be designed to match the directivity or guidance of the sound waves. Various shapes and / or spaces, such as various horn arcs or various cones or various straight shapes or various curved shapes or various mixtures of the above. Based on the natural properties of sound waves, echoes, re-echoes and sound gravity fields, the front sound effect unit 1032 and the front sound resonator 1036 / 1036A cooperate with the sound waves 1018AW and 1018BW to obtain three-dimensional stereo reverberation and harmony effects. The different sizes, shapes and structures of the front-end sound effect unit 1032 and the front-end sound resonator 1036 / 1036A form different three-dimensional stereo reverberation and harmony effects.

[0139] Under comprehensive consideration of the directivity or guidance of sound waves, the external rear sound effect unit of the rear end 1006B of the speaker cover 1006 of the earphone and the internal rear sound effect unit 1032B that cooperates with the rear speaker 1018B can jointly include a unit of the outer wall / surface and the inner wall / surface of the rear end 1006B, or can be different units, or connected or separated, and can be designed to be various shapes that match the directivity or guidance of sound waves, such as various matching speaker arcs or various cones or various straight shapes or various curved shapes or various mixtures of the above. The rear sound effect unit 1032B cooperates with the sound waves generated by multiple speakers arranged on the same axis or different axes, or cooperates with multiple speakers at the front and rear ends arranged at an angle to achieve a three-dimensional sound effect and output.

[0140] Similarly, taking into account the directivity or guidance of the sound waves, the rear end 1006B of the speaker cover 1006 of the earphone can be set as a rear sound resonator 1036B of a rear sound resonator unit or a rear sound resonator area that matches the rear speaker 1018B, and also includes the space of the rear speaker 1018B and the area or space between the rear speaker 1018B and the rear end 1006B to the bottom unit 1016, and also includes the side wall of the rear unit 1006B of the speaker cover and its corresponding space, which can be designed to match the directivity or guidance of the sound waves. Various shapes and / or spaces, such as various matching speaker arcs or various cones or various straight shapes or various curved shapes or various combinations of the above. Based on the natural properties of sound waves, echoes, re-echoes and sound gravity fields, the rear sound effect unit 1032B and the rear sound resonator 1036B cooperate with the rear sound waves 1018ABW and 1018BBW to obtain three-dimensional stereo reverberation and harmony effects. The different sizes, shapes and structures of the rear-end sound effect unit 1032B and the sound resonator 1036B form different three-dimensional stereo reverberation and harmony effects.

[0141] In this way, the front end 1006A of the speaker cover 1006 of the earphone contains a sound output unit 1020 that outputs and resonates the front and rear sound waves, the front speaker 1018A, the front sound effect unit 1032, and the front sound resonator 1036 / 1036A, all the way to the rear end 1006B of the earphone's speaker cover 1006, the rear diaphragm unit 1052B / 1052BB and the annular voice coil unit 1054B of the rear speaker 1018B are directly connected to the rear sound hole unit 1058B and then directly connected to the rear sound effect unit 1032B and the rear sound resonator 1036B, forming an overall circulation system for the front and rear sound waves to simultaneously and synchronously generate transmission resonant output, and fully generate the maximum quantized Z-axis sound output and the optimized XYZ three-dimensional stereo effect from the front end of the front end 1006A to the rear end of the rear end 1006B.

[0142] In fact, the overall circulation system in which the front and rear sound waves simultaneously and synchronously generate and transmit resonant output is the natural stereo effect and principle of ergonomic sound waves generating resonant output applied to headphone research and development, especially how to arrange and combine multiple speakers in small in-ear headphones to produce better fidelity and restore the original real sound three-dimensional stereo effect.

[0143] Ergonomics is applied to headphones to better generate, transmit, resonate and output three-dimensional stereo sound. The human voice is generated by the vibration of the vocal cords connected to the larynx and glottis from the lungs, and then resonates in the mouth and then outputs. The front cavity is the oral cavity and connects the mouth to make sounds, the back cavity is the lungs to the glottis and connects the vocal cords, and the vocal cords with a membrane cavity connected to the larynx and glottis in the middle are the sound-producing body, and the structure of the vocal cords and their membrane cavities is very complex. The double / two-sided membrane walls of the vocal cords and their cavities receive airflow vibrations to make sounds. Based on such ergonomics, the present invention uses the diaphragm 1052A / 1052B / 1052BB of the front and rear speakers 1018A / B and their voice coil 1054B connected to the vent unit 1058A / B as the structure and function of the vocal cords and their membrane cavity connected to the glottis to generate, transmit and resonate sound waves, the rear end sound resonator 1036B as the structure and function of lung gas transmission and resonance, the front end sound resonator 1036 as the structure and function of oral gas circulation, transmission and resonance, and the sound output port unit 1020 as the mouth to output three-dimensional stereo sound.

[0144] Here, in particular, the composite structure of the front and rear speakers 1018A / B diaphragm unit 1052A / 1052B / 1052BB and the annular voice coil 1054A / 1054B and the vent unit 1058A / B is a composite sound-generating structure and principle of the vocal cords and their double-sided membrane cavity and glottis. In ergonomics, the double-sided membrane wall / cavity of the vocal cords vibrates to produce sound by induction of airflow; the glottis bidirectionally transmits airflow to affect the front and rear sound wave vibrations of the double-sided membrane wall of the vocal cords. At the same time, the vocal cords and their membrane cavity and glottis are connected and cooperated to directly produce vocal cord vibrations to produce sound by bidirectional transmission of airflow. Therefore, the diaphragm unit, voice coil unit, and sound transmission unit 1052A / 1052B / 1052BB / 1054B / 1058A / B of the front and rear speakers 1018A / B, the front and rear sound effect units 1032 / 1032B, and the front and rear sound resonators 1036 / 1036A / 1036B work synchronously and together to form a basic body for sound generation, transmission, and resonance, and the sound output unit 1020 outputs three-dimensional stereo sound. As we all know, the deeper the airflow in the lungs, the louder and more three-dimensional the sound produced. Changes in the depth of the lung cavity produce changes in the depth of sound (Z axis). This is also another purpose of applying ergonomics to the diaphragm unit 1052B / BB, the voice coil unit 1054B, and the sound transmission unit 1058B---the resonance of the front and rear sound waves, the transmission of multiple resonances, and the transmission. Specific applications are in Figures 1 to 5A and its instructions are described in detail and apply to Figures 1 to 5A All examples and instructions in.

[0145] The size, shape, function, structure, design and material of the front and rear end sound effect units 1032 / 1032B and the front and rear end sound resonance units 1036 / 1036B may vary.

[0146] A computerized sound controller 1080, which may use a sound wave / level / frequency control unit, is disposed in the earphone speaker housing unit 1006 including a plurality of speaker center units. At the same time, the sound controller 1080 also includes a sound unit 1080A. The sound unit 1080A controls the sound system and / or the sound audio configuration and connection system of the plurality of speaker units including the front speaker 1018A and the rear speaker 1018B.

[0147] The sound controller 1080 introduces the high frequency sound into the first speaker 1018A through the cable and the sound frequency division element, and introduces the low frequency / mid frequency sound audio into the second speaker 1018B, so that the strong low frequency and the echo / harmony stereo sound can be obtained and the best balanced stereo sound effect in the three-dimensional sound effect under the linear array arrangement of the two speakers. The cable connection method can be parallel or series or any other connection method.

[0148] When the headset 1000 includes 1, 2, 3 or more speakers, the sound controller 1080 analyzes and manages all sound levels and frequencies, divides and directs and connects these sounds to the appropriate speakers to obtain the best three-dimensional adjustable stereo effect.

[0149] The design, function, material, shape, size, type and location of the sound controller 1080 may vary.

[0150] The earphone 1000 has a left earphone part and a right earphone part. Each earphone part has a speaker cover unit 1006 including a sound controller 1080 and two speakers 1018A and 1018B. Accordingly, two sound controllers 1080, two speakers 1018A and two speakers 1018B can be provided in one earphone 1000 to create a realistic three-dimensional stereo effect.

[0151] The sound controller 1080 and the sound unit 1080A may be integrated into one part or different parts. The size, design, method, system, location and material of the sound controller 1080 and the sound unit 1080A are variable.

[0152] The sound output unit 1020 connected to the front ear shell 1006A of the speaker cover unit 1006 has a sound transmission and filtering unit 1020B, which includes a built-in sound output unit 1020BB and a sound output channel 1020BBB specially designed for earbud headphones.

[0153] The sound transmission and filtering unit 1020B and the sound output unit 1020BB are designed in the shape of a mushroom head or a duckbill. This design is intended to transmit sound to the user's ear canal completely, tightly and comfortably, and to isolate external noise. A special sound environment is formed in the earmuff 1006 from the front and rear diaphragms 1052A / 1052B and the central through-hole unit 1058B of the specially arranged sound sources 1018A and 1018B to the front and rear sound effect areas 1032 / 1032B and the front and rear reverberation areas 1036 / 1036B, to the sound output unit 1020, to transmit the XYZ three-dimensional stereo effects and output directly and seamlessly to the user's ear canal.

[0154] The sound output channel 1020BBB collects all the sounds from the speaker unit to the sound output unit 1020BB to obtain a stereo output of the earphone.

[0155] At the same time, the sound output unit 1020BB has a sound isolation function of isolating external noise and unnecessary sound.

[0156] The mushroom head or duckbill shape of the sound transmission unit 1020B can be removed and replaced according to different needs according to the user's ears, and can also be changed to other sound output designs such as earplug-type, ear-hook-type or ear-attached-type.

[0157] The size, design, shape, position, method and material of the sound transmission / concentrating units 1020, 1020B, 1020BB and 1020BBB and the speaker cover units 1006 and 1006A / 1006B / 1006AB are all variable.

[0158] The sound output unit 1020 is directly connected to the front end 1006A of the front part of the speaker cover.

[0159] The sound output unit 1020 connected to the front cover 1006A of the speaker cover unit 1006 transmits sound for in-ear sound output. The sound output unit 1020 may also include sound flow holes, sound insulation and noise filters, which are made of any suitable soft and elastic material, such as fabric, leather, soft plastic, rubber or sponge material. The noise filter unit in the sound output unit 1020 can be provided with many filter layers to achieve the effect of sound insulation and noise filtering. The sound output unit 1020 can be provided with multiple small holes to transmit sound and filter noise. The noise filter blocks the noise to the maximum extent, minimizes the ambient sound, and creates a better stereo environment between the closed earmuff unit 1006 and the user's ear.

[0160] like Figures 1 to 5AThe speaker system 1000 and all related units of various three-dimensional stereo headphones in the embodiment shown in the figure can also be used in any head-mounted device, headphone, earmuff or hearing aid device.

[0161] The speaker base fixing point 1082 is used to fix the front speaker 1018A in the cover 1006, and can also be applied to the rear speaker 1018B. Figures 1 to 5 In the illustrated embodiment, the design, function, size, shape, position and material of the speaker fixing point 1082 can be variable if necessary. For example, the speaker fixing point unit 1082 can include and be designed and structured as 1-3 micro-bracket points, or 1-3 micro-glue points. The length and width of each micro-bracket point or micro-glue point are preferably 1-3 mm, with the main design direction being to not affect the circulation, transmission and resonance of any front and rear sound waves, etc.

[0162] The speaker cover unit 1006 is provided with a front portion (front end front shell) 1006A and a rear portion (rear end rear shell) 1006B, and is provided with a connection unit 1006AB connecting the front and rear shells. The connection unit 1006AB is often used as the connecting middle line of the front and rear portions (shells) 1006A / 1006B of the speaker cover 1006. The connection unit 1006AB can be in various shapes, for example, a longitudinal straight line shape, a transverse straight line shape, an angled straight line shape, an arc shape, regular or irregular, and can be in various positions, in the middle, in the front or back, up or down, and can also be designed to be various shapes or functional structures that match the directivity or guidance of sound waves, for example, various speaker arc shapes, various cone shapes, various straight shapes, various curved shapes, or a mixture of the above. Regardless of the shape of the connection unit 1006AB, the speaker cover unit 1006 has the portion close to the sound output unit 1020 / 1020BB / 1020BBB as the front portion 1006A (front end front shell), and the portion close to the other end as the rear portion 1006B (rear end rear shell). The front portion 1006A (front end front shell) and the rear portion 1006B (rear end rear shell) of the speaker cover unit 1006 may be of the same size or shape or design or material or internal and external structure or vertical and horizontal arrangement, or may be of different sizes or shapes or design or material or internal and external structure or vertical and horizontal arrangement.

[0163] The design, function, size, shape, location, method and material of unit 1006 / 1006A / 1006B / 1006AB may vary.

[0164] The data line 1046 can connect the headset 1000 to any suitable audio / video player. The data line 1046 can also be replaced by a wireless unit (not labeled). The data line unit 1046 can be equipped with a microphone with a volume / player controller (not labeled).

[0165] The sound controller 1080 configures the music player, the sound source, and the stereo frequencies to the speakers 1018A and 1018B. The sound controller 1080 includes a capacitor unit 1080A using a 4.7 microfarad capacitor, which can more accurately configure the sound source digital signal from the music player. The capacitor unit 1080A can use any capacity and can be any type, size, or capacitor type. Preferably, the sound controller 1080 uses circuits or electronic components to configure the treble audio to the front speaker 1018A, and simultaneously configures the bass / mid-range frequencies to the rear speaker 1018B. Of course, in order to obtain better stereo output and reduce the loss and distortion of digital sound, there are many feasible configuration methods for stereo. For example, the sound controller 1080 can configure the bass audio to the front speaker 1018A, and configure the treble / mid-range frequencies to the rear speaker 1018B.

[0166] When applied to Figures 1 to 5 While all embodiments are shown, the position, size, design, structure, shape, function and material of all units and features described above may be changed as appropriate.

[0167] Figure 1A and 1AA and 1AAA are shown Figure 1 The front and rear speakers 1018A / 1018B main components and their internal structures and external systems and settings and matching systems in the embodiment need to be combined Figure 1 and its detailed description.

[0168] The front and rear end speakers 1018A / 1018B are arranged in a front-to-back combination series 1050, which includes the diaphragm unit and / or the composite diaphragm unit 1052A / 1052B and the annular voice coil unit 1054B of the front and rear end speakers 1018A / 1018B and the central sound hole 1058B (sound wave channel unit) through the rear end and its related combined structure (i.e., the multi-layer diaphragm composite structure).

[0169] The internal system and structure of the rear speaker 1018B include a diaphragm unit 1052B / 1052BB, a ring-shaped voice coil unit 1054B, a magnet unit 1056B, a yoke unit 1060B, a central sound hole unit 1058B at the rear end of the speaker, and a damping unit 1066B.

[0170] The diaphragm unit 1052B / 1052BB and the annular voice coil unit 1054B are connected and combined to form the main body of a multi-layer diaphragm composite structure or system. The diaphragm unit 1052B is a combination of one or more diaphragms or a multi-layer diaphragm composite, and the edges of the multi-layer diaphragm 1052B can be connected or separated. The annular voice coil unit 1054B and the diaphragm unit 1052B / 1052BB are directly connected, or they can be divided into multiple annular voice coil units corresponding to the diaphragm units and connected to each other, that is, one annular voice coil unit corresponds to one or more diaphragm units, or one diaphragm unit corresponds to one or more annular voice coil units. Thus, a diaphragm sound structure 1052BB with multi-level or multi-region sound units and resonance space is formed between the diaphragm unit 1052B and the annular voice coil unit 1054B. The multi-layered sound effect unit of the diaphragm sound effect structure 1052BB is similar to a multi-cavity (honeycomb effect) that simultaneously and simultaneously transmits and resonates the sound waves in multiple layers and strengthens and optimizes the sound effect. At the same time, because of the honeycomb structure and its effect of multiple sound wave resonance, multiple sound waves are enhanced and amplified to resonate without interfering with each other to produce noise or sound changes. The honeycomb structure produces multiple sound waves that are classified and resonate at the same frequency and do not interfere with each other to strengthen the resonance, amplification and transmission. For example, a certain level (relatively narrow) of the honeycomb design and structure is classified to absorb, transmit and resonate high-frequency sound waves, another level is classified to absorb, transmit and resonate mid-frequency sound waves, and another level (relatively large) is classified to absorb, transmit and resonate low-frequency sound waves. As a result, the diaphragm unit 1052B and the multi-layered or multi-regional sound effect unit and the diaphragm (sound effect) structure 1052BB of the resonance space are often regarded as a whole diaphragm unit 1052B / 1052BB. Moreover, the sound wave transmission and resonance of the diaphragm unit 1052B / 1052BB are synchronously performed at the same time. When the annular voice coil unit 1054B senses the flow change of the electrical signal in the magnet unit 1056B and generates vibration, it drives the diaphragm unit 1052B and the sound effect structure 1052BB to vibrate synchronously and generate sound waves 1018BW to emit sound and present a stereo sound in one dimension in the XY axis of the sound wave. The diaphragm unit and the sound effect structure 1052B / 1052BB have good sound wave resonance and optimization effects, thereby generating better sound waves and transmission.

[0171] At the same time, the diaphragm unit 1052B / 1052BB and the annular voice coil unit 1054B are connected to the central sound hole unit 1058B at the rear end of the speaker and are combined to form the main structure or the whole system of the multi-layer diaphragm composite unit 1052B / 1052BB / 1054B / 1058B. Since the propagation of sound waves has three-dimensional properties and is also directional, the sound waves 1018BW of the diaphragm unit 1052B / 1052BB are transmitted forward, and also bounced back from the front sound effect unit 1032 and the resonator unit 1036 / 1036A to the rear end, and then transmitted backward through the diaphragm unit 1052B / 1052BB into the rear center through hole unit 1058B and then transmitted to the rear sound resonator 1036B in the rear end 1006B of the speaker cover for resonance and output.

[0172] In this way, the external system of the rear speaker 1018B includes the rear sound effect unit 1032B and the rear sound resonator 1036B in the matching rear end unit 1006B, which form resonance and generate rear sound waves 1018BBW.

[0173] Of course, the diaphragm unit 1052B can also be a single-layer diaphragm or a single-layer double-sided diaphragm or a multi-layer diaphragm combination or a structure compounded into a layer. The diaphragm unit 1052B with multiple diaphragms combined into a layer also has a multi-layer sound effect unit and a resonance space of the sound effect structure 1052BB similar to a multi-fast surface (window pane effect) to strengthen and optimize the multi-layer transmission resonance transmission of sound waves and the sound effect. Therefore, the diaphragm unit 1052B and the multi-level or multi-region sound effect unit and the diaphragm (sound effect) structure 1052BB of the resonance space are often regarded as a whole diaphragm unit 1052B / 1052BB.

[0174] further, Figure 1AAA(Enlarged view) Further showing the structure and sound wave flow of the diaphragm unit 1052B / 1052BB of the composite diaphragm drive unit, the annular voice coil unit 1054B and the sound hole unit 1058B as a combination of a multi-layer diaphragm composite unit 1052B / 1052BB / 1054B / 1058B. A diaphragm sound effect structure 1052BB of a multi-level or multi-region sound effect unit and a resonance space is formed between the diaphragm unit 1052B and the annular voice coil unit 1054B. The diaphragm sound effect structure 1052BB of a multi-level or multi-region sound effect unit and a resonance space may include a center sound effect and resonance area (center honeycomb) 1052BW1; and a side sound effect and resonance area (side honeycomb) 1052BW2. When the sound waves vibrate and transmit back and forth with the diaphragm unit 1052B / 1052BB as the sound source center area, the center honeycomb 1052BW1 and the side honeycomb 1052BW2 also move back and forth and cooperate with the sound hole unit 1058B to transmit and resonate the front and back sound waves. Therefore, the diaphragm drive unit 1052B / BB / 1054B / 1058B can include the diaphragm unit 1052B / 1052BB and the annular voice coil unit 1054B and the sound hole unit 1058B and its honeycomb sound effect and resonance area 1052BW1 / 2. The diaphragm drive unit 1052B / BB / 1054B can also include the diaphragm unit 1052B / 1052BB and the annular voice coil unit 1054B and its honeycomb sound effect and resonance area 1052BW1 / 2. The honeycomb sound effect and resonance area 1052BW1 / 2 of multiple sound waves resonate to enhance the resonance of multiple sound waves without interfering with each other to produce noise or sound distortion, synchronous amplification, and synchronous stereo depth. The natural property of sound waves resonating at the same frequency, the honeycomb structure produces multiple sound waves of the same frequency that resonate and amplify and transmit without interfering with each other. For example, the honeycomb design and structure of 1052BW2 classifies absorption, transmission and resonance of high-frequency sound waves, and the honeycomb design and structure of 1052BW1 classifies absorption, transmission and resonance of low-frequency and medium-frequency sound waves.

[0175] The internal structure of the front speaker 1018A includes a front diaphragm unit 1052A, an annular voice coil unit 1054A, a magnet unit 1056A, a front sound hole unit 1058A, a yoke unit 1060A, and a damping unit 1066A. The diaphragm unit 1052A is connected to the voice coil unit 1054A. When the annular voice coil unit senses the flow change of the electrical signal in the magnet unit 1056A and vibrates, the diaphragm unit 1052A is driven to vibrate and generate sound waves 1018AW, which emits a stereo sound in one dimension of the XY axis of the sound wave. Since the propagation of sound waves has three-dimensional properties and is also directional, the sound waves 1018AW of the diaphragm unit 1052A, when transmitted forward, also bounce back from the front sound effect unit 1032 and the resonator unit 1036 / 1036A in the front end unit 1006A included and matched by the external structure of the front speaker 1018A, and are transmitted to the rear end, and then transmitted backward through the rear speaker diaphragm unit 1052B, enter the rear center through-hole unit 1058B, and then are transmitted to the rear unit 1006 of the speaker cover. The rear end sound effect unit 1032B and the rear end sound resonator 1036B in B form resonance, generate rear end sound wave 1018ABW, which together with the rear end sound wave 1018BBW of the rear end speaker 1018B is output forward from the rear end unit 1016 in the rear end 1006B of the earmuff to the front end sound output unit 1020 / 1020BBB in the front end 1006A of the earmuff, showing the third dimension stereo with a deeper Z axis depth in the XYZ axis and transmitted forward, thereby realizing three-dimensional stereo and its effects.

[0176] The external system of the front and rear speakers 1018A / 1018B of the multi-speaker front-to-back arrangement combination series 1050 includes the front and rear sound effect units 1032 / 1032B and the front and rear sound resonator units 1036 / 1036B within the front and rear units 1006A / 1006B, and works synchronously with the internal structure of the front and rear speakers 1018A / 1018B to produce three-dimensional stereo sound with a deeper Z-axis depth.

[0177] The rear speaker 1018B can adopt a direct-type dynamic speaker structure--the speaker diaphragm is completely open to directly contact and generate and transmit front and rear sound waves. In addition, the rear speaker diaphragm unit 1052B / 1052BB and the annular voice coil unit 1054B are directly connected to the rear center through-hole unit 1058B and then communicate with the rear 1006B cavity. In this way, the front and rear sound waves 1018AW / 1018BW and 1018ABW / 1018BBW are communicated and output through (transmitted) the rear speaker diaphragm unit 1052B / 1052BB and the rear center through-hole 1058B. The purpose of the rear end center through-hole unit 1058B facing the center of the diaphragm unit 1052B / 1052BB is to make the front and rear sound waves 1018AW / 1018BW and 1018ABW / 1018BBW concentrate in the sound effect unit 1032B of the rear end sound cavity and the rear end sound resonator 1036B through the rear end speaker diaphragm unit 1052B / 1052BB for balanced and stable resonance and transmission and optimization and output.

[0178] The cooperation between the rear speaker diaphragm unit 1052B / 1052BB, the annular voice coil unit 1054B, and the rear direct and rear center through hole unit 1058B can be designed and structured using the directional characteristics of sound wave radiation to guide or direct the front and rear sound waves or various sound waves to a predetermined space for sound wave resonance, optimization, and transmission. For example, the front and rear sound waves are guided into the rear through hole unit 1058B and into the rear sound effect unit 1032B and the rear sound resonator 1036B for resonance and then output, thereby producing three-dimensional stereo sound and its effects with a Z-axis of maximum depth.

[0179] The matching structure of the rear speaker diaphragm unit 1052B / 1052BB, the annular voice coil unit 1054B and the rear center through-hole unit 1058B (i.e., the multi-layer diaphragm composite structure) realizes the maximum quantitative optimization and transmission effect of the rear speaker diaphragm unit 1052B / 1052BB and the annular voice coil unit 1054B as the front and rear sound wave circulation resonance sound transmission. The advantage of such a matching structure is that the sound wave frequency response curve is flat and stable, and the high, medium and low audio frequencies are clear, thereby achieving high-fidelity three-dimensional stereo and its effect.

[0180] Of course, in the multi-layer diaphragm composite structure of the front and rear speaker diaphragm units 1052A / 1052B / 1052BB, the annular voice coil unit 1054B, and the rear sound hole unit 1058A / 1058B, if necessary, multiple sound wave damping units or damping membrane units 1066A / 1066B can be used to balance and optimize various front and rear sound waves and improve frequency response, which helps the front and rear sound waves to resonate with each other without interfering with each other. This is because sound waves have scattering properties and also have strong directional characteristics. The sound wave damping unit 1066A / 1066B can guide the sound waves to develop in the required direction and law and sound effects and frequency response.

[0181] If necessary, the acoustic damping unit 1066A / 1066B can also be applied to Figures 1 to 5A The front end sound output unit 1020 or any cavity, channel or through hole where the sound wave is located, etc. The sound wave damping unit 1066A / 1066B can be of various structures, sizes and positions, for example, it can be a sponge material, a thin sheet material, an elastic porous material, a cylinder, a disk, a rectangle, thick, thin, etc.

[0182] The front and rear diaphragm units 1052A / 1052B / 1052BB can have various designs, shapes, structures, systems, methods, materials, sizes, positions, etc. For example, the material of the diaphragm is preferably a plastic polyester film with low density, fast sound transmission, wide frequency and high fidelity, or a phenolic plastic film or a nylon film. The shape of the diaphragm is circular, and the central part is designed to be in an arc shape, and reinforcement ribs can also be added to increase the effective area of ​​the diaphragm. For example, the rear diaphragm unit 1052B / 1052BB, taking into account the directional characteristics of the sound waves, can be trumpet-shaped, straight-sheet-shaped, round, curved, double-sided, multiple or single-layer multi-sided, one-layer double-diaphragm surface, multiple layers of multi-diaphragm surfaces, multiple layers of diaphragms in the same direction or opposite to each other, painted, plated, double-sided plated, with holes, without holes, folded / overlapped or smooth, multiple layers of the same or different, the diameter can be the same as or close to or smaller than the diameter of the rear speaker 1018B, preferably 5 mm to 15 mm, the thickness is preferably less than 0.01 to 0.3 mm, etc. If applied to a speaker of a head-mounted device, a headphone, an earmuff or a hearing aid device or an ear-hook or earmuff type earphone, all dimensions will be larger accordingly.

[0183] The front and rear center sound hole units 1058A / 1058B can have a variety of designs, shapes, structures, systems, methods, materials, sizes, positions, etc. For example, the rear center sound hole unit 1058B, taking into account the scattering and directivity of sound waves, can be straight-through, straight-through with a horn, horn-shaped, curved, painted, plated, with wall holes, without wall holes, with magnetic hole sleeves, with metal hole sleeves, the hole diameter size is preferably less than 0.2 mm to 3 mm, the hole depth is preferably less than 0.5 mm to 5 mm, etc. If applied to a head-mounted device, a headphone, an earmuff or a hearing aid or a speaker of an ear-hook or earmuff type earphone, all sizes will be larger accordingly. At the same time, the (spatial) structure of the rear end sound hole unit 1058B can also transmit and resonate sound waves synchronously at the same time.

[0184] The rear center sound hole unit 1058B is directly connected to the rear sound resonator 1036B of the rear unit 1006B. Therefore, the hole wall and hole edge of the rear center sound hole unit 1058B can become a part of the rear sound effect unit 1032B. The hole cavity and space of the rear center sound hole 1058B can also become a part of the rear sound resonator 1036B.

[0185] The front and rear voice coil units 1054A / 1054B are directly connected to the vibration system of the diaphragm unit 1052A / 1052B / 1052BB. The annular voice coil unit 1054B is directly connected to the single-layer diaphragm unit or the multi-layer composite diaphragm unit 1052B / 1052BB, or it can be divided into multiple voice coils corresponding to the multi-layer diaphragms and connected to each other, that is, one annular voice coil corresponds to one diaphragm unit, and the annular voice coil unit 1054B can be single multi-layer multi-grid, or multiple multi-layer multi-grid, thereby forming a multi-level or multi-region sound effect unit and a resonant space sound effect structure 1052BB between the diaphragm unit 1052B / 1052BB and the annular voice coil unit 1054B. The multi-layer sound effect unit of the sound effect structure 1052BB is similar to the multi-cavity (honeycomb effect) 1052BW1 / 2, which further strengthens and optimizes the synchronization of multi-sound wave multi-layer transmission and sound effects, and at the same time, the various sound waves do not interfere with each other. The voice coil of the annular voice coil unit 1054A / 1054B preferably uses copper-clad silver wire with clearer sound quality, and copper enameled wire or copper-clad aluminum wire, etc. The front and rear diaphragm units 1052A / 1052B / 1052BB and the front and rear annular voice coil units 1054A / 1054B are combined into a diaphragm drive unit or system.

[0186] The front and rear magnet units 1056A / 1056B are key components that cause the annular voice coil unit and the diaphragm unit to vibrate and generate sound waves by generating magnetic field changes through the audio signal current. The permanent magnet material of the magnet unit 1056A / 1056B is preferably neodymium iron boron or rare earth alloy or aluminum nickel cobalt alloy, etc., so as to achieve a balanced and stable magnetic circuit, miniaturized volume, and greatly enhanced magnetic force.

[0187] The front and rear yoke units 1060A / 1060B connect and tighten the membrane edge of the diaphragm unit 1052A / 1052B / 1052BB to allow the diaphragm unit 1052A / 1052B / 1052BB and the annular voice coil unit 1054A / 1054B to fully and freely vibrate. The yoke unit 1060A / 1060B and the magnet unit 1056A / 1056B can be integrated or connected separately.

[0188] The front and rear annular voice coil units 1054A / 1054B and magnet units 1056A / 1056B and front and rear yoke units 1060A / 1060B and sound wave damping units or damping membrane units 1066A / 1066B and yoke units 1060A / 1060B can have a variety of designs, shapes, structures, systems, methods, materials, sizes, positions, and the like.

[0189] Since the front and rear speakers 1018A / 1018B are arranged coaxially, the front and rear sound waves 1018AW / 1018BW and 1018ABW / 1018BBW have a common sound wave center axis 1088. The sound wave center axis 1088 is also the center axis of the arrangement of the front and rear speakers 1018A / 1018B. The sound wave axis 1088 runs through the entire speaker cover 1006 front and rear end 1006A / 1006B, including the sound output unit 1020 to the rear button unit 1016, and is therefore also the overall sound wave axis with Z-axis depth for XYZ-axis three-dimensional stereo.

[0190] The front speaker 1018A and the rear speaker 1018B or multiple speakers may be of the same type or different types, or a mixed type, and may include the same unit components and structures and materials and sizes and methods and systems and configurations, or may be different, or may be partially the same and partially different, may be the same or different, or may be partially the same and partially different, and may be used, applied or interchangeable in any figure and any example of the present application for all types of headphones 1000.

[0191] In this way, the front and rear sound waves 1018AW / 1018BW / 1018ABW / 1018BBW from the front speaker 1018A and the front sound effect unit 1032 and the front sound resonator 1036 / 1036A in the front end 1006A of the speaker cover 1006, to the rear diaphragm unit 1052B / 1052BB and the annular voice coil unit 1054B of the rear speaker 1018B in the rear end 1006B of the speaker cover 1006 and the rear sound hole unit 1058B directly connected to the back and then directly connected to the rear sound effect unit 1032B and the rear sound resonator 1036B, together forming an overall circulation system in which the front and rear sound waves simultaneously and synchronously generate transmission resonance output, and fully generate the maximum quantized Z-axis sound output and the optimized XYZ three-dimensional stereo effect from the front end sound output unit 1020 of the front end 1006A to the rear end of the rear end 1016.

[0192] exist Figures 1 to 1E In the example, the sound-transmitting structure and function of the diaphragm unit 1052B / 1052BB of the rear speaker 1018B cooperates with the rear center sound hole unit 1058B to communicate and transmit the front and rear sound waves 1018AW / 1018BW, 1018ABW, and 1018BBW, and transmits them forward from the rear end of the rear unit 1006B, thereby achieving a three-dimensional stereo effect with a deeper Z-axis depth. Because the rear sound waves 1018ABW / 1018BBW and the front sound waves 1018AW / 1018BW have the optimized Z-axis depth sound effect of the sound wave depth distance 1084 / 1086, better and deeper XYZ three-dimensional and spatial stereo is achieved.

[0193] The diaphragm unit 1052B / 1052BB of the rear speaker 1018B of the earphone 1000 has a sound-transmitting resonant structure, function and role. The speaker diaphragm is the most important component in the speaker to generate and transmit sound. The vibration of the diaphragm generates sound waves to emit sound. While the diaphragm generates sound waves, it also has a structure, function and role of transmitting sound. The diaphragms of ancient musical instruments are made of natural materials to generate and transmit sound. For example, the diaphragm of the flute is made of reed membrane or bamboo membrane, the diaphragm of the drum is made of animal skin, the diaphragm of the erhu is made of python skin, and so on. The double-sided tympanum of the double-sided drum is struck to produce sound, and the sound waves are generated and transmitted to the drum cavity for resonance optimization and amplification, and then transmitted to the outside by the double-sided tympanum to form the drum sound. The erhu's zither membrane generates sound waves and transmits them to the zither tube for resonance optimization and amplification, and then transmitted to the outside by the zither membrane to form the erhu sound. The flute membrane of the flute generates sound waves and transmits them to the flute tube for resonance optimization and amplification, and then transmitted to the outside by the flute membrane to form the flute sound.

[0194] That is to say, when the diaphragms of drums, erhu and flute generate sound waves, these sound waves are transmitted to the drum cavity, the sound tube (cavity) of the erhu, and the sound tube of the flute, and after resonance, they are transmitted outward through the sound-transmitting structure and function of the diaphragm, forming the sound of drums, erhu, and flute. The tympanic membrane has an internal structure, function and role suitable for the generation and transmission of drum sound waves. The erhu membrane has an internal structure, function and role suitable for the generation and transmission of erhu sound waves. The flute membrane has an internal structure, function and role suitable for the generation and transmission of flute sound waves.

[0195] The diaphragms used in headphones are all artificially made materials. The quality requirements for artificial diaphragms in in-ear headphones are very high. The quality requirements for artificial diaphragms are mainly focused on the high sound velocity and low density to produce sound sensitivity as high as possible, the wider the audio response, the better, and the greater the sound quality transmittance. The diaphragm of artificial materials does achieve the two elements of high sound velocity and low density for sound wave transmission properties. In the acoustic industry, the diaphragm of artificial materials is most widely used and similar in electronic microphones and electronic speakers. The diaphragms of electronic speakers and electronic microphones generally use plastic polyester films or metal diaphragms or plastic films coated with metal. Alloy aluminum diaphragms or other metal diaphragms can also be used.

[0196] The radiation, reflection and transmission of sound waves are also an important feature of sound propagation. Since the artificial diaphragm has good sound wave transmission and transmittance, when the sound wave encounters the artificial diaphragm surface, almost all the sound wave energy can be transmitted to the other side of the diaphragm surface. This property of sound wave energy radiation, reflection and transmission is determined by acoustic properties.

[0197] Therefore, the diaphragm unit 1052B / 1052BB of the rear speaker 1018B can be very thin, generally less than 0.01 mm to 0.3 mm, and can even reach microns (μm). Its artificial material is conducive to a very high sound speed, and its density is also quite dispersed as it becomes thinner, which is conducive to the generation and transmission of sound waves, thereby increasing its responsiveness to sound waves and being actively sensitive, thereby forming a characteristic impedance of sound wave transmission that is very close to the characteristic impedance of the sound wave itself. Therefore, the diaphragm unit 1052B / 1052BB diaphragm of the rear speaker 1018B has a full transmission similar to or close to that of sound waves. In other words, the diaphragm unit 1052B / 1052BB of the rear speaker 1018B is almost transparent and sound-permeable to sound waves, that is, it becomes a transparent and sound-permeable diaphragm, and also widens the sound wave peak of the diaphragm unit 1052B / 1052BB that resonates or resonates, especially through the diaphragm unit 1052B to form a multi-layer sound effect unit and a resonant space sound effect structure. The multi-layer sound effect unit 1052BB is similar to a multi-cavity (honeycomb effect) 1052BW1 / 2, which further strengthens and optimizes the simultaneous synchronization of multi-sound wave multi-transmission resonance transmission and sound effects, and at the same time, the multiple sound waves do not interfere with each other.

[0198] For example, the thickness of the nickel-made diaphragm unit 1052B / 1052BB of the rear speaker 1018B is 10-5 meters (0.01 millimeters), while the wavelength of ordinary sound waves (20Hz to 20kHz) that can be heard by the human ear is the distance between two adjacent peaks or two troughs, which is generally between 17 millimeters and 7 meters. It can be seen that the wavelength is much larger than the thickness of the diaphragm, and the diaphragm has a strong sound wave transmittance. In this way, the diaphragm unit 1052B / 1052BB of the rear speaker 1018B itself also has an intermediate layer effect for sound wave transmission. When the thickness of the intermediate layer of the composite structure on the diaphragm unit 1052B / 1052BB material is very small compared to the wavelength of the sound wave in the layer, then the intermediate layer is acoustically as if it does not exist, and the sound wave can still be fully transmitted, achieving the sound transmission function and sound wave optimization effect of the diaphragm on sound wave transmission. In particular, the multi-layer sound effect unit and the sound effect structure 1052BB of the resonant space are formed between the composite diaphragm 1052B. The multi-layer sound effect unit is similar to a multi-cavity (honeycomb effect) 1052BW1 / 2, which further strengthens and optimizes the synchronization of multi-sound wave multi-layer transmission resonance transmission and sound effects. At the same time, the multiple sound waves do not interfere with each other.

[0199] At the same time, the structure of the diaphragm unit 1052B / 1052BB of the rear speaker 1018B is also coated with paint or plating to facilitate the transmission of sound waves. This anti-transmission effect is the same as the principle of coating anti-transmission of optical devices, which is called matching layer technology in acoustic textbooks. For example, the multi-layer composite diaphragm unit 1052B / 1052BB (composite of materials and coating / plating materials) of the rear dynamic speaker 1018B adopts a thin film structure of plastic film or fiber film or any artificial material film, which can be nickel-plated or aluminum-plated or nickel-plated or other metal coatings or any liquid crystal polymer to improve the sensitivity to sound waves and the transmission and response capabilities, so that its characteristic impedance for sound wave transmission is very close to the characteristic impedance of the sound wave itself. Therefore, the diaphragm unit 1052B / 1052BB of the rear speaker 1018B has similar or close to the full transmission and optimization of sound waves. In particular, the multi-layer sound effect unit and the sound effect structure 1052BB of the resonant space are formed between the composite diaphragm 1052B. The multi-layer sound effect unit is similar to a multi-cavity (honeycomb effect) 1052BW1 / 2, which further strengthens and optimizes the synchronization of multi-sound wave multi-layer transmission resonance transmission and sound effects. At the same time, the multiple sound waves do not interfere with each other.

[0200] The rear speaker 1018B adopts a direct-emission dynamic speaker structure --- the speaker diaphragm unit 1052B / 1052BB and the annular voice coil unit 1054B are completely open and directly contact the sound waves. In addition, the rear of the rear speaker diaphragm unit 1052B / 1052BB is directly connected to the rear center sound hole unit 1058B and the rear cavity 1006B. In this way, the front and rear sound waves 1018AW / 1018BW and 1018ABW / 1018BBW are connected and coordinated through (transmitted) the rear speaker diaphragm unit 1052B / 1052BB, the annular voice coil unit 1054B and the rear center sound hole 1058B, and flow and output synchronously at the same time. Therefore, the connected structure of the rear-end speaker diaphragm unit 1052B / 1052BB, the annular voice coil unit 1054B and the rear-end center sound hole unit 1058B (i.e., the multi-layer diaphragm composite structure) realizes the optimization function and resonance effect of the rear-end speaker diaphragm unit 1052B / 1052BB as the circulation of the front and rear sound waves 1018AW / 1018BW and 1018ABW / 1018BBW, thereby producing three-dimensional stereo with better Z-axis depth.

[0201] The front speaker 1018A can use the same speaker and configuration as the rear speaker 1018B, or it can be a different structure or size or material or unit or technology and configuration. That is to say, the front and rear speakers 1018A and 1018B can be the same or different, or the front speaker unit 1018A can include multiple speakers, or the rear speaker unit 1018B can include multiple speakers. Usually, the front speaker 1018A is small in size, generally a 5-10 mm diameter dynamic speaker or a 2-3 mm rectangular dynamic iron speaker, and the rear speaker 1018B is larger in size, generally a 10-16 mm diameter dynamic speaker. Of course, the front speaker 1018A can be large in size, the rear speaker 1018B can be smaller in size, or the front and rear speakers 1018A / 1018B can be the same in size.

[0202] The front speaker 1018A may be a dynamic diaphragm speaker, a moving iron speaker, or other forms of speakers. The rear speaker 1018B may also be a dynamic diaphragm speaker, a moving iron speaker, or other forms of speakers.

[0203] The sizes, specifications, types, designs, structures, shapes, systems, methods, etc. of the front and rear speakers 1018A and 1018B can be varied, and can be used and replaced with each other.

[0204] The diaphragms 1052A / 1052B / 1052BB of the front and rear speakers 1018A / 1018B can be the same or different, and their respective designs, materials, sizes, specifications, processes, structures, types, shapes, systems, methods, etc. can be diverse and can be used and replaced with each other.

[0205] The design, material, process, structure, size, specification, type, shape, system, method, etc. of the front and rear center sound hole units 1058A / 1058B can be varied, and can be applied and replaced with each other. Furthermore, the position of the front and rear center sound hole units 1058A / 1058B can be arbitrarily designed at any place and angle to meet the needs of the front and rear diaphragms 1052A / 1052B / 1052BB to transmit sound waves.

[0206] The magnet unit 1056B of the rear speaker 1018B includes north and south magnetic poles of a magnet structure. When the current signal passes through, current and magnetic fluctuations are generated, causing the annular voice coil unit 1054B to vibrate, thereby driving the composite diaphragm 1052B / BB to vibrate and generate sound waves 1018B to make sound. The yoke unit 1060B connects and fixes the membrane edge of the diaphragm unit 1052B / BB to make the diaphragm unit 1052B / BB tight and fully and freely vibrate together with the voice coil 1054B. The magnet unit 1056B and the yoke unit 1060B can be integrated or connected separately.

[0207] The magnet unit 1056A of the front speaker includes north and south magnetic poles of the magnet structure. When the current signal passes through, the current and magnetic fluctuations are generated, causing the annular voice coil unit 1054A to vibrate, thereby driving the diaphragm unit 1052A to vibrate and generate sound waves 1018A to make sound. The yoke unit 1060A is connected and fixed to the edge of the diaphragm unit 1052A to make the diaphragm unit 1052A tight and fully and freely vibrate together with the voice coil 1054A. The magnet unit 1056A and the yoke unit 1060A can be combined into one, or they can be connected separately.

[0208] The front and rear end speakers 1018A / 1018B front and back arrangement combination 1050 can have various changing combinations. For example, it can be a combination of more than two speakers, or it can be a combination of one speaker in front and one in back, two speakers in front and one in back, one speaker in front and two in back, two speakers in front and two in back, multiple speakers in front and multiple in back, or they can be in the same direction, different directions, arranged at an angle, face-to-face relative structures, staggered or angled relative, and so on.

[0209] When applied to Figures 1 to 5AWhile all embodiments are shown, the location, size, design, shape, function and material of all the above individual elements and features may be changed as appropriate.

[0210] Figure 1B is Figure 1 to Figure 1AA Another example developed on the basis of the present invention. The front and rear speakers 1018A / 1018B are arranged front and back in a combination 1050 in a face-to-face structure.

[0211] The face-to-face relative structure of the front and rear speakers 1018A / 1018B arranged front and back 1050 will also produce a very good three-dimensional stereo effect. The face-to-face relative structure of multiple speakers arranged front and back makes the distance 1084 between the front and rear speakers 1018A / 1018B and the sound wave distance 1086 more clear and distinct. In this way, the diaphragms 1052A / 1052B / 1052BB of the front and rear speakers 1018A / 1018B are also face-to-face. As the sound source of each sound wave, the distance between the diaphragm unit 1052A and 1052B / 1052BB is the depth distance 1084 between the front and rear speakers. The distance from the sound wave of the front diaphragm unit 1052A to the sound output unit 1020BBB is the front sound wave distance 1086A; the distance from the sound wave of the rear diaphragm unit 1052B / 1052BB to the sound output unit 1020BBB is the rear sound wave distance 1086B. That is, the depth distance 1084 is the sound wave depth distance 1086 which is equal to the rear sound wave distance 1086B minus the front sound wave distance 1086A. On this basis, the sound wave distance 1086 with Z-axis depth is the same as the front-to-back arrangement distance 1084 of the front and rear speakers. This makes it easier to design, plan, arrange, structure, method, position, etc. of the distance 1084 and the sound wave depth 1086, so as to produce better three-dimensional stereo with Z-axis depth and its effect.

[0212] Since the front and rear speakers 1018A / 1018B are face-to-face, the diaphragms 1052A / 1052B / 1052BB of the front and rear speakers 1018A / 1018B are also face-to-face. This arrangement and combination requires rearranging the frequencies, fluctuations and resonances of the front and rear sound waves 1018AW / 1018BW and 1018ABW / 1018BBW of the front and rear speakers 1018A / 1018B to avoid direct overlap, confrontation or repulsion between the sound waves, which would cause confusion in the sound wave output.

[0213] For example, a mutual avoidance and push-pull vibration mode is adopted between the front and rear diaphragm units 1052A / 1052B / 1052BB of the front and rear speakers 1018A / 1018B. This mutual avoidance and push-pull vibration mode involves changes in the overall design, materials and structure of the entire front and rear diaphragm units 1052A / 1052B / 1052BB, the front and rear magnet units 1056A / 1056B and the front and rear voice coils 1054A / 1054B, and may even involve changes in the sound controller unit 1080 and its electronic audio signals, for example, using different diaphragm units or annular voice coil units or magnet materials and structures, so that the frequencies of the front and rear diaphragms 1052A / 1052B / 1052BB complement and give way to each other, thereby producing better three-dimensional stereo. For another example, by using the frequency division management of the sound controller 1080, the high, medium and low frequencies are divided into the front and rear diaphragm units 1052A / 1052B / 1052BB for separate processing, so as to achieve complementarity and mutual concession between the frequencies of the front and rear diaphragm units 1052A / 1052B, thereby producing better three-dimensional stereo sound and its effect.

[0214] Figure 1C is Figures 1 to 1B Another example developed on the basis of the invention. The front and rear speakers 1018A / 1018B front and rear arrangement combination 1050 is a 90-degree right angle front and rear arrangement structure. Since the front and rear speakers 1018A / 1018B are a 90-degree right angle front and rear arrangement structure, the diaphragms 1052A / 1052B / 1052BB of the front and rear speakers 1018A / 1018B are also a 90-degree right angle front and rear arrangement structure. The right angle front and rear arrangement structure of the front and rear speakers 1018A / 1018B front and rear arrangement combination 1050 will also produce excellent three-dimensional stereo sound and its effect.

[0215] At this time, the front and rear sound waves 1018AW / 1018BW and 1018ABW / 1018BBW generated by the diaphragms 1052A / 1052B / 1052BB of the front and rear speakers 1018A / 1018B also form a right angle relationship. The sound wave centerline 1088SB of the rear speaker 1018B and the sound wave centerline 1088SA of the front speaker 1018A are at a 90-degree right angle, which requires rearranging the frequencies, fluctuations and resonances of the front and rear sound waves 1018AW / 1018BW and 1018ABW / 1018BBW of the front and rear speakers 1018A / 1018B to achieve the three-dimensional stereo effect produced by the best combination. One of the benefits of this arrangement is that the space of the front sound effect unit 1032 and the front sound resonator unit 1036 is enlarged to optimize the sound quality.

[0216] When the space in front of the diaphragm unit 1052A of the front speaker 1018A is enlarged, the front sound wave 1018AW generated thereby will have more resonance space to achieve a fuller sound wave playback effect. If the front speaker 1018A is mainly treble, the treble performance at this time will be louder and more unrestrained. The front sound wave line 1088SA is directly played and output upward in the enlarged space of the front sound effect unit 1032 and the front sound resonator unit 1036.

[0217] At the same time, the front response space of the diaphragm unit 1052B / 1052BB of the rear speaker 1018B is also increased accordingly, and the rear sound waves 1018BW and 1018ABW / 1018BBW generated thereby will be directly output from the rear diaphragm unit 1052B / 1052BB and the rear center sound hole unit 1058B to more resonance spaces to achieve a more direct sound wave playback effect. The diaphragm unit 1052B / 1052BB is a composite diaphragm combination of one or more layers, and the edges of the multi-layer diaphragm unit 1052B can be connected or separated. The annular voice coil unit 1054B and the multi-layer diaphragm unit 1052B / 1052BB are directly connected, and can be divided into multiple annular voice coil unit structures corresponding to the multi-layer diaphragm structures, or one annular voice coil unit structure can correspond to one diaphragm unit structure or multiple diaphragm unit structures, or one diaphragm unit structure can correspond to one or more annular voice coil unit structures, thereby forming a multi-level or multi-region sound effect unit and a resonant space sound effect structure 1052BB between the multi-layer composite diaphragm unit 1052B and the annular voice coil unit 1054B. The multi-level sound effect unit of the sound effect structure 1052BB is similar to a multi-cavity (honeycomb effect) that simultaneously strengthens and optimizes the synchronization of multi-layer transmission resonance transmission of sound waves and resonant sound effects. When the annular voice coil unit 1054B senses the flow change of the electrical signal in the magnet unit 1056B and generates vibration, it drives the diaphragm unit 1052B and the sound structure 1052BB between the composite diaphragm unit to vibrate synchronously and generate sound waves 1018BW to emit sound and show a stereo in one dimension in the XY axis of the sound wave. The sound structure 1052B / 1052BB between the diaphragm unit and the composite diaphragm unit has better sound wave resonance and optimization effect, thereby generating better sound waves and transmission. If the rear speaker 1018B is mainly mid-bass, the mid-bass performance at this time will be deeper and more powerful. The rear sound wave line 1088SB with Z-axis depth is played and output directly forward in the enlarged space of the front sound unit 1032 and the front sound resonator unit 1036, thereby generating an excellent XYZ three-dimensional stereo effect with enhanced deeper Z-axis depth.

[0218] Furthermore, the front and rear end speakers 1018A / 1018B front and rear arrangement combination 1050 may be a 90-degree right angle front and rear arrangement structure and may also be varied. The front and rear end speakers 1018A / 1018B front and rear arrangement combination series 1050 may be a series of front and rear arrangement structures at various angles. For example, the angle 1062 between the front and rear diaphragm units 1052A / 1052B / 1052BB of the front and rear end speakers 1018A / 1018B may be a stereoscopic omnidirectional angle combination from 0 to 360 degrees, or a 360-degree stereoscopic omnidirectional angle combination with 1088SA as the axis, or a 360-degree stereoscopic omnidirectional angle combination with 1088SB as the axis. Moreover, the two front and rear axes 1088SA / 1088SB may also be a 360-degree omnidirectional angle combination. There are many advantages to such a multi-angle combination. One of the advantages is that when the front and rear diaphragm units 1052A / 1052B / 1052BB of the front and rear end speakers 1018A / 1018B are at a 25-degree angle, the loud treble, bass reverberation and harmony produced and transmitted by the front and rear diaphragm units 1052A / 1052B / 1052BB will produce a stronger sense of depth on the Z-axis.

[0219] For another example, while the materials and structures of the front and rear diaphragm units 1052A / 1052B / 1052BB remain unchanged, a multi-angle combination of 0 to 45 degrees is used to achieve the best resonant coordination between the frequencies of the front and rear diaphragm units 1052A / 1052B / 1052BB, forming the best front and rear sound waves 1018AW / 1018BW and 1018ABW / 1018BBW, thereby producing better three-dimensional stereo sound.

[0220] Figure 1D yes Figures 1 to 5A A detailed diagram of another embodiment of the speaker diaphragm unit 1052B and the rear sound hole unit 1058B and related components in the front and rear speaker 1018A / 1018B front-to-back arrangement combination system 1050. The rear diaphragm unit 1052B / 1052BB can also adopt the diaphragm system of the bipolar electromagnetic speaker in conjunction with the through rear center sound hole unit 1058B (sound wave channel unit).

[0221] The rear diaphragm unit 1052B / 1052BB of the bipolar electromagnetic speaker adopts a circular diaphragm of soft magnetic material, which is made of cold-rolled low-carbon steel strip, and can also be made of iron-cobalt-vanadium alloy, with a thickness of 0.2-0.22 mm. The very flat surface of the diaphragm unit should be treated with a uniform coating thickness to achieve flatness, good magnetic properties and elasticity to achieve high sensitivity, good frequency response and good stability. The annular voice coil unit 1054B is directly connected to the magnet system 1056B using a bipolar type, and attention should be paid to the accurate connection of the north-south magnetic. The rear diaphragm unit 1052B / 1052BB and the bipolar annular voice coil unit 1054B are combined into a diaphragm drive unit 1052B / BB / 1054B. In this way, when the sound electronic signal is input into the annular voice coil unit 1054B, an alternating magnetic field that changes with the sound signal is generated. This alternating magnetic field is superimposed or subtracted from the original constant magnetic field, generating an alternating suction force, which attracts the diaphragm unit 1052B / 1052BB to twist and vibrate, thereby generating sound waves to emit sound 1018B.

[0222] The rear diaphragm unit 1052B / 1052BB is ultra-thin and coated, so it has good sound wave transmission and transmission. The rear diaphragm unit 1052B / 1052BB has a good and complete plane that is completely open to directly contact the sound waves, and at the same time is directly connected to the annular voice coil unit 1054B and the rear center sound hole unit 1058B and the rear cavity. In this way, the front and rear sound waves 1018AW / 1018BW and 1018ABW / 1018BBW are transmitted through the rear speaker rear diaphragm unit 1052B / 1052BB, which is coaxial with the front and rear sound wave flow center axis 1088 and flows and outputs. Therefore, the connecting structure of the rear end diaphragm unit 1052B / 1052BB of the rear end speaker, the annular voice coil unit 1054B and the rear end center sound hole unit 1058B realizes the optimization function and resonance effect of the rear end diaphragm unit 1052B / 1052BB of the rear end speaker and the annular voice coil unit 1054B as the circulation resonance of the front and rear sound waves 1018AW / 1018BW and 1018ABW / 1018BBW, thereby producing better three-dimensional stereo sound.

[0223] The front speaker 1018A may have the same structure, material and size as the rear speaker 1018B, or they may be different.

[0224] Mentioned above and in Figure 1-5A All units shown in the drawings may include single or multiple units with any type of design, shape, material, format, system, function, location and structure.

[0225] All the above units can be changed in design, shape, structure, system, method, function, position and material as needed, so as to be applied to Figure 1-5AVarious different embodiments of earphone 1000 are shown.

[0226] As required, explained above and in Figure 1-5A All units, functions and structures shown in the embodiment can be used, applied or interchanged in any figures and any units of the present application for all types of headphones 1000.

[0227] Figure 1E yes Figures 1 to 5A A detailed diagram of another embodiment of the speaker rear diaphragm unit 1052B / 1052BB and the center vibration rod 1052C and the annular voice coil unit 1054B and the rear sound hole unit 1058B and their related components and structures (i.e., a multi-layer diaphragm composite structure) in the front and rear end speaker 1018A / 1018B front and back arrangement combination system 1050. The rear diaphragm unit 1052B / 1052BB and the center vibration rod 1052C and the annular voice coil unit 1054B use the diaphragm system of the differential electromagnetic speaker in conjunction with the rear center sound hole unit 1058B.

[0228] The rear diaphragm unit 1052B / 1052BB, the center vibration rod 1052C and the annular voice coil unit 1054B adopt a differential electromagnetic speaker structure, which has two advantages: balanced structure and reliable structure. The rear diaphragm unit 1052B / 1052BB is directly connected to the center vibration rod 1052C to form a diaphragm drive unit 1052B / BB / C. The diaphragm unit 1052B / 1052BB is driven left and right with the center vibration rod 1052C as the center to generate sound waves and emit sound 1018B. In this way, the center fulcrum structure is very balanced, and the cast aluminum bracket used is also very firm.

[0229] The rear diaphragm unit 1052B / 1052BB of the differential electromagnetic speaker has a central small hole, which is inserted into the vibration rod 1052C. One end of the vibration rod is rolled up and fixed with glue to the central hole of the rear diaphragm unit 1052B / 1052BB. The voice coil 1054C is respectively inserted into the magnetic pole of the magnet unit 1056B. In this way, when the sound electronic signal is input into the annular voice coil unit 1054C, an alternating magnetic field that changes with the sound signal is generated. The direction of the magnetic field is different depending on the positive and negative half-cycle of the input electrical signal and the left and right magnetic poles (coil winding direction). As a result, the vibration rod 1052C vibrates to the left and right of the magnetic pole under the action of the magnetic force, so that the rear diaphragm unit 1052B / 1052BB connected to the vibration rod 1052C also vibrates up and down accordingly to generate sound waves and emit sound 1018B.

[0230] The rear diaphragm unit 1052B / 1052BB is ultra-thin and coated, and has good sound wave transmission and transmission. The rear diaphragm unit 1052B / 1052BB is well, completely and openly in direct contact with the sound waves. At the same time, it is directly connected to the vibration rod 1052C and communicates with the rear center sound hole unit 1058B and the rear cavity. The central vibration rod 1052C is coaxial and in the same direction as the central axis 1088 of the front and rear sound wave flow. In this way, the front and rear sound waves 1018AW / 1018BW and 1018ABW / 1018BBW are connected through (transmitted) the rear speaker diaphragm unit 1052B / 1052BB and flow resonantly output. Therefore, the connecting structure of the rear-end speaker diaphragm unit 1052B / 1052BB, the central vibration rod 1052C and the rear-end central sound hole unit 1058B (i.e., the multi-layer diaphragm composite structure) realizes the optimization function and resonance effect of the rear-end speaker diaphragm unit 1052B / 1052BB as the circulation resonance of the front and rear sound waves 1018AW / 1018BW and 1018ABW / 1018BBW, thereby producing better three-dimensional stereo sound with better Z-axis depth.

[0231] The front speaker 1018A may have the same structure, material and size as the rear speaker 1018B, or they may be different.

[0232] Figure 1D and Figure 1E The examples and structures can be used in whole or in part in Figures 1 to 5A in all descriptions and examples.

[0233] like Figure 1F As shown in the sound wave performance curve, press Figures 1 to 1E One of the embodiments of the speaker diaphragm, diaphragm coating and sound hole matching in the headphone dual speaker front-to-back arrangement combination system 1050 shown. The front speaker 1018A adopts a dynamic speaker with a diameter of 6 mm. The size of the rear sound hole unit 1058B of the rear dynamic speaker 1018B is 2 mm in diameter and 2 mm in length. The diaphragm 1052B of the rear speaker 1018B has a diameter of 11 mm, and its material is a plastic film polyester diaphragm with a thickness of 0.01 mm, which is represented by the sound wave curve A (dashed line). Applying the acoustic and optical intermediate layer matching technology and the coating anti-reflection effect, the sound wave of the rear speaker diaphragm 1052B, which is made of a plastic film polyester diaphragm with a thickness of 0.01 mm and a nickel-plated film (intermediate layer anti-reflection), is represented by the sound wave curve B (solid line). The thickness of the aluminum-plated film is 0.01 mm. In this way, the thickness of the diaphragm plus the coating is 0.02 mm.

[0234] From the comparison between sound wave curve A and sound wave curve B, it can be shown that sound wave curve A shows that the sound waves are relatively gentle in low, medium and high audio frequencies. This shows that the rear sound waves 1018ABW / 1018BBW generated and transmitted by the rear diaphragm unit 1052B are relatively gentle, and have ideal performance in both the bass and treble. Sound wave curve B is the rear diaphragm unit 1052B with a nickel-plated membrane, which shows that the entire audio volume is 3-5 dB (Y-axis direction) higher than that of sound wave curve A, and sound wave curve B is more prominent and excellent in low, medium and high audio frequencies, and further, the performance between 1K and 10K of Hz on the X-axis is particularly outstanding. This shows that the rear diaphragm unit 1052B with a nickel-plated membrane has more and better sound wave transmission and optimization, and the rear sound waves 1018ABW / 1018BBW generated and transmitted have excellent performance of ideal fluctuations in the bass, medium and high segments, and can truly restore the three-dimensional stereo effect of the original music.

[0235] Obviously, the sound output of sound wave curve B is better and more ideal than the sound output of sound wave curve A in terms of XYZ three-dimensional stereo effect.

[0236] Of course, in order to obtain the different XYZ three-dimensional stereo sound outputs required for real stereo music with better effects, the size, material, thickness, structure, method, position, angle, shape, etc. of the speaker diaphragm and its coating can be varied.

[0237] For example, Fig. 1FF As shown in the sound wave performance curve, press Figures 1 to 1E One of the embodiments of the speaker composite diaphragm and / or diaphragm coating and sound hole matching in the headphone dual speaker front-to-back arrangement combination system 1050 shown. The front speaker 1018A adopts a dynamic speaker with a diameter of 6 mm. The size of the rear sound hole unit 1058B of the rear dynamic speaker 1018B is 2 mm in diameter and 2 mm in length. The material of the rear speaker diaphragm unit 1052B is a plastic film polyester diaphragm with a thickness of 0.01 mm, and the sound wave after adding a nickel-plated film (intermediate layer anti-transmission) is expressed as a sound wave curve AA (dashed line). The thickness of the aluminum-plated film is 0.01 mm. In this way, the thickness of the diaphragm plus the coating is 0.02 mm. The rear speaker 1018B uses a diaphragm unit 1052B / 1052BB with a diameter of 11 mm, and the material of each layer of the diaphragm is a plastic film polyester diaphragm with a thickness of 0.01 mm, and the sound wave after adding a nickel-plated film (intermediate layer anti-transmission) is expressed as a sound wave curve BB (solid line). The thickness of the nickel-plated film is 0.01 mm. Thus, the thickness of each layer of diaphragm plus coating is 0.02 mm. The distance between each diaphragm of the composite diaphragm is 1-2 mm. At the same time, there are also multi-level transmission and resonance structures and spaces between each diaphragm of the diaphragm unit 1052B / 1052BB and the annular voice coil unit 1054B.

[0238] From the comparison between the sound wave curve AA and the sound wave curve BB, it can be shown that the sound wave curve AA shows that the rear sound wave 1018ABW / 1018BBW generated and transmitted by the rear diaphragm unit 1052B is relatively gentle, and has ideal performance in both the bass and treble. The sound wave curve BB shows that the entire audio volume is 4-7 dB (Y-axis direction) higher than the sound wave curve AA, and the sound wave curve BB is more outstanding and excellent in the low, medium and high audio frequencies, and further, the performance between 1K and 10K Hz on the X-axis is particularly stable and excellent. This shows that the rear diaphragm unit 1052B / 1052BB has more and better sound wave transmission and resonance optimization, and the rear sound wave 1018ABW / 1018BBW generated and transmitted has more ideal and stable fluctuations in the bass, medium and high segments, and can more realistically restore the three-dimensional stereo effect of the original music.

[0239] Obviously, the sound output of the sound wave curve BB is better and more ideal in the three-dimensional stereo effect of XYZ than the sound output of the sound wave curve AA.

[0240] like Figure 1G As shown in the sound wave performance curve, press Figures 1 to 1E How the rear speaker sound hole unit 1058B in the headphone dual speaker front-to-back arrangement combination system 1050 shown cooperates with the rear diaphragm unit 1052B / 1052BB is one of the embodiments of the overall system. The front speaker 1018A uses a dynamic speaker with a diameter of 6 mm. The rear dynamic speaker diaphragm unit 1052B / 1052BB has a diameter of 11 mm and a thickness of 0.01 mm. According to the directional characteristics of sound wave transmission, the rear speaker sound hole unit 1058B can be designed to have different sizes, shapes, structures and positions to cooperate with the rear diaphragm unit 1052B / 1052BB to achieve better sound wave guidance transmission and resonance.

[0241] The sound wave curve C (dashed line) is the sound wave curve performance achieved by the sound hole unit 1058B having a straight tube with a flat mouth shape of 2 mm in diameter and 3 mm in length. The sound wave curve D (solid line) is the sound wave curve performance achieved by the sound hole unit 1058B having a straight tube with a bell mouth of 3 mm in diameter and 3 mm in length.

[0242] From the comparison between sound wave curve C and sound wave curve D, it can be shown that sound wave curve C shows that the sound waves are relatively gentle in low, medium and high audio frequencies, and have ideal performance in both the bass and treble segments. Sound wave curve D shows that the overall audio volume is 3-5 dB higher than that of sound wave curve C (Y-axis direction), and sound wave curve D is more prominent and excellent in low, medium and high audio frequencies, and further, the performance between 1K and 10K Hz on the X-axis is particularly outstanding. This shows that the diameter of the sound hole unit 1058B is increased by 1 mm and modified to a flare shape at both ends of the inlet and outlet to enhance the directional transmission of the sound wave guidance, and has more and better optimized transmission resonance rear end sound waves 1018ABW / 1018BBW have more ideal fluctuations in the bass, medium and treble segments, and can better restore the three-dimensional stereo effect of the original music.

[0243] Obviously, the sound output of the sound wave curve D is better and more ideal than the sound output of the sound wave curve C in terms of the three-dimensional stereo effect of XYZ.

[0244] Of course, in order to obtain the different XYZ three-dimensional stereo sound output effects required by real stereo music, the size, material, thickness, structure, method, position, angle, shape, etc. of the speaker rear end through-hole unit 1058B and all other various through-hole units can be varied when combined with the rear end diaphragm unit 1052B / 1052BB as an overall system.

[0245] further, Figure 1F / 1FF and Figure 1G Any units corresponding to the sound wave curve B / BB and the sound wave curve D or their comprehensive configuration including size, position, structure, material or method can also be coordinated, matched or cross-configured in a variety of ways to produce XYZ axis three-dimensional stereo with maximum optimized high-fidelity sound effects.

[0246] Figure 1F The performance of the sound wave curve B / BB / D in / FF / G and the various configurations produced can be preferably and comprehensively applied to Figures 1 to 5A Develop and apply it to the greatest extent possible in the various examples provided.

[0247] Mentioned above and in Figure 1-5A All units shown in the figure may include single or multiple units with any type of design, shape, material, format, system, function, position and structure. And all the above units may be changed in design, shape, structure, system, method, function, position and material as needed, so as to be applied to Figure 1-5A Various different embodiments of earphone 1000 are shown.

[0248] As required, explained above and in Figure 1-5A All units, functions and structures shown in the can be used, applied or interchanged or cross-used in any figures and any units of the present application for all types of headphones 1000.

[0249] In such Figure 2 and Figure 2A In another embodiment shown, the earmuff 1006 has an irregular shape and the front / rear speakers 1018A and 1018B are arranged linearly at the front and rear ends of the earphone, and there is an axis width 1088B between the different central axes 1018AX and 1018BX of the speakers 1018A and 1018B, respectively. The width 1088B is formed by the speakers 1018A arranged linearly at the front end of the earphone with 1018AX as the central axis and the speakers 1018B arranged linearly at the rear end of the earphone with 1018BX as the central axis, the central axis 1018AX is above the central axis 1018BX of the speaker 1018B, and the axis 1018BX is arranged below the central axis 1018AX of the speaker 1018A. Axis 1088AX and 1088BX are the center point lines of the multiple speakers 1018A and 1018B. The multiple speakers 1018A / 1018B are arranged at different horizontal positions at the front and rear ends of the earphone and form a 90 degree angle with the horizontal axis facing forward.

[0250] Therefore, the front and rear diaphragm units 1052A / 1052B / 1052BB of the two speakers 1018A and 1018B are also arranged in a straight line at the front and rear ends of the earphone through their respective different central axes 1018AX and 1018BX, and form a difference in width 1088B on an axis. The width data of 1088B is the distance between 1018AX and 1018BX. Through multiple experiments, it was found that when the width value of 1088B is within the range of 1 mm to 5 mm, a better three-dimensional stereo effect can be produced.

[0251] With the width 1088B, the stereo wave outputs 1018AW and 1018BW of the speakers whose front and rear diaphragm units 1052A / 1052B / 1052BB are located at different axes 1018AX and 1018BX respectively have different wave rates and waveforms. It is very important to control these wave rates and waveforms in order to mix the output waves to obtain a better three-dimensional stereo effect closer to the original stereo music and transmit it to the listener's ears.

[0252] More importantly, the width difference 1088B is also the difference between the center axis of the rear diaphragm unit 1052B / 1052BB and the rear center sound hole 1058B and the center axis of the sound wave 1018ABW / 1018BBW that bounces back from the front and is transmitted to the rear. At this time, the center line 1018AX of the sound wave that bounces back and is transmitted to the rear is correspondingly changed to the top of the rear center sound hole 1058B instead of the middle line, which will change the frequency and waveform of the sound wave 1018ABW / 1018BBW passing through the rear center sound hole 1058B, thereby increasing the stereo resonance space of the Z axis. Based on the external structure and setting depth 1084 between the front and rear speakers 1018A and 1018B and the front and rear sound wave depth 1086A, the width difference 1088B of the front and rear sound wave center axes is added and matched, so that a deeper resonance effect can be achieved. In addition, the sound wave center line 1018AX that bounces back and transmits to the rear end can also exceed the range of the center hole, and a good three-dimensional stereo sound effect will be obtained.

[0253] That is to say, in the structure of the front and rear diaphragm units 1052A / 1052B / 1052BB and the rear center sound hole 1058B (i.e., the multi-layer diaphragm composite structure), the width 1088B between the sound wave axes 1018AX / 1018BX of the front and rear speakers 1018A / 1018B, plus the front and rear sound wave depths 1086A, will have different effects on the frequencies and waveforms of the front and rear sound waves 1018AW / 1018BW and 1018ABW / 1018BBW. Therefore, the width 1088B and the depth 1086A determine the better Z-axis deeper extension of the three-dimensional stereo produced by the speakers 1018A and 1018B that are linearly arranged on different axes 1018AX and 1018BX at the front and rear ends in order to obtain the three-dimensional stereo effect of the XYZ axes.

[0254] Figure 2 and Figure 2A The structure of the front and rear speakers linear staggered arrangement system 1050 shown can be varied, and can be arranged linearly front to back, can be arranged non-linearly front to back, can be arranged in the same direction front to back and have various angles with each other, or can be facing each other front to back and have various angles with each other.

[0255] Accordingly, the front and rear parts 1006A / 1006B, the front sound effect unit 1032, the front sound echo effect unit 1036 / 1036A, the rear sound echo resonance effect unit 1036B and the rear sound effect unit 1032B included and matched by the external system as the front and rear speakers 1018A / 1018B are all irregular and different shapes, or they can be the same rules and shapes, or partly the same and partly different. These units 1006A / 1006B, 1032, 1032B, 1036 / 1036A, 1036B, 1016 are all matched with the width 1088B between the different axis positions of the speakers 1018A and 1018B to obtain a better three-dimensional stereo effect. Through the sound configuration unit 1080, the sound waves 1018AW and 1018BW on the axes 1018AX and 1018BX of different sound waves work within units 1032, 1032B, 1036 / 1036A, 1036B, 1006A and 1006B, and complete sound jumping, mixing and balancing through the width 1088B, bringing a better XYZ three-dimensional stereo effect to the listener's ears.

[0256] When it is necessary to apply Figures 1 to 5A In the various embodiments shown, all Figure 2 and Figure 2A The shapes, positions, sizes, materials and methods of the elements or features herein may vary.

[0257] Figure 3 and Figure 3A The example shown is another front and rear end speaker 1018A / 1018B front and rear arrangement combination series 1050 includes the diaphragm unit 1052A / 1052B / 1052BB and the annular voice coil unit 1054A / 1054B of the front and rear end speakers 1018A and 1018B and the rear end connected porous unit 1058C and their arrangement and combination structure (i.e., a multi-layer diaphragm composite structure).

[0258] The internal structure of the rear speaker 1018B (i.e., the multi-layer diaphragm composite structure) includes a diaphragm unit 1052B / 1052BB, an annular voice coil unit 1054B, a magnet unit 1056B, a yoke unit 1060C, and a plurality of small through-hole units 1058C on the back 1060CB of the yoke shell unit 1060C. The composite diaphragm unit 1052B / 1052BB and the annular voice coil unit 1054B are connected to form a composite diaphragm drive system 1052B / BB / 1054B. When the annular voice coil unit 1054B senses the flow change of the electrical signal in the magnet unit 1056B and vibrates, the diaphragm unit 1052B / 1052BB is driven to vibrate and generate a sound wave 1018BW to emit a stereo sound in one dimension of the sound wave XY axis. At the same time, the rear diaphragm unit 1052B / 1052BB is connected to the rear yoke shell small through-hole unit 1058C. The rear yoke unit 1060C includes the back 1060CB and the front 1060CA of the yoke unit shell. Since the propagation of sound waves has three-dimensional properties and is also directional or guiding, the sound waves 1018BW of the diaphragm unit 1052B / 1052BB are transmitted forward, and at the same time, they are also bounced back from the front sound effect unit 1032 and the resonator unit 1036 / 1036A and transmitted to the rear end, and then transmitted backward through the diaphragm unit 1052B / 1052BB into the rear yoke shell small sound hole unit 1058C and then transmitted to the rear end 1006B of the speaker cover, and resonance is formed in the rear end sound effect unit 1032B and the rear end sound resonator 1036B in the rear end 1006B included and matched by the external system of the rear end speaker 1018B, thereby generating a rear end sound wave 1018BBW with a deeper Z-axis depth. The structure of multiple interconnected small holes 1058C at the rear of the rear yoke iron shell unit 1060B of the rear speaker is to replace the role and function of the rear center sound hole unit 1058B.

[0259] The internal structure of the front speaker 1018A includes a diaphragm unit 1052A, a voice coil unit 1054A, a magnet unit 1056A, and a yoke unit 1060A. The diaphragm unit 1052A is connected to the annular voice coil unit 1054A. When the annular voice coil unit 1054A senses the flow change of the electrical signal in the magnet unit 1056A and vibrates, the diaphragm unit 1052A is driven to vibrate and generate sound waves 1018AW to emit sound and present a stereoscopic sound in one dimension of the sound wave XY axis. Since sound wave propagation has three-dimensional properties and is also directional, the sound wave 1018AW of the diaphragm unit 1052A, when transmitted forward, also bounces back from the front sound effect unit 1032 and the resonator unit 1036 / 1036A in the front end portion 1006A included in and matched with the external structure of the front speaker 1018A, and is transmitted to the rear end, and then transmitted backward through the rear speaker diaphragm unit 1052B to enter the communicating small hole unit 1058C in the rear yoke iron shell unit 1060C and then transmitted to the speaker. The rear end unit 1006B of the earmuff forms resonance in the rear end sound effect unit 1032B and the rear end sound resonator 1036B, and outputs forward from the rear end unit 1016 in the rear end 1006B of the earmuff to the front end sound output unit 1020 / 1020BBB at the front end 1006A of the earmuff, thereby generating a rear end sound wave 1018ABW with a deeper Z-axis depth, which resonates together with the rear end sound wave 1018BBW of the rear end speaker 1018B to achieve better XYZ three-dimensional stereo and its effects.

[0260] The structure of the yoke unit 1060C can also be varied. For example, the yoke unit 1060C can have only a back shell 1060CB with a small through-hole unit 1058C, or it can have a front shell 1060CA extending to the front of the diaphragm unit 1052B and also having a connected small through-hole unit 1058C. The front yoke shell 1060CA and the back yoke shell 1060CB can both have a plurality of connected small hole units 1058C. The size of the small through-hole unit 1058C is preferably 0.1 mm to 0.3 mm. The number of small through-holes of the small through-hole unit 1058C is preferably 8-12. Furthermore, the multi-channel sound hole unit 1058C of the front yoke iron shell 1060CA and the rear yoke iron shell 1060CB can be designed as a plurality of small circular holes that are the same at the front and back and communicate with the diaphragm unit 1052B / 1052BB in sound waves, or can be designed as a cross hole shape or a straight hole shape that is the same at the front and back, or a cross hole shape that is the same at the front and back, or can be designed as a multi-hole shape and structure that is different at the front and back.

[0261] The advantages of the porous design on the yoke unit 1060C are many. First, the porous unit can be designed to be able to adjust the size and open and close at any time according to the needs of the diaphragm unit 1052B / 1052BB to generate and transmit front and rear sound waves during production. In other words, the porous unit can control the sound wave transmission flow and sound wave guiding direction at the front and rear ends according to the specific needs of the overall performance of the diaphragm unit 1052B / 1052BB. Second, a circle arrangement of the porous unit 1058C or a vertical and horizontal arrangement of the cross-shaped holes and the M-shaped holes can cope with the different center axis misalignments or multiple multi-angle arrangements of the front and rear diaphragm units 1052A / 1052B / 1052BB, and transmit the front and rear sound waves 1018AW / 1018BW and 1018ABW / 1018BBW to penetrate the rear diaphragm unit 1052B / 1052BB and enter the rear sound effect unit 1032B and the rear sound resonator 1036B in the rear shell 1006B for resonance, thereby producing three-dimensional stereo sound with a deeper Z-axis depth.

[0262] Mentioned above and in Figure 1-5A All units shown in the drawings may include single or multiple units with any type of design, shape, material, format, system, function, location and structure.

[0263] All the above units can be changed in design, shape, structure, system, method, function, position and material as needed, so as to be applied to Figure 1-5A Various different embodiments of earphone 1000 are shown.

[0264] As required, explained above and in Figure 1-5A All units, functions and structures shown in the embodiment can be used, applied or cross-interchangeable in any figures and any units of the present application for all types of headphones 1000.

[0265] like Figure 4 and Figure 4A In the example of the present invention shown, another front and rear end speaker 1018A / 1018B front-to-back arrangement combination series 1050 includes the rear end diaphragm unit 1052B / 1052BB and the rear end sponge communicating unit 1058D of the front and rear end speakers 1018A and 1018B and their related parts combination structure (i.e., a multi-layer diaphragm composite structure).

[0266] The internal structure of the rear speaker 1018B (i.e., the multi-layer diaphragm composite structure) includes a diaphragm unit 1052B / 1052BB, an annular voice coil unit 1054B, a magnet unit 1056B, a yoke unit 1060D, and a sponge-connected unit 1058D on the back of the yoke shell unit 1060D. The diaphragm unit 1052B / BB and the annular voice coil unit 1054B are connected to form a composite diaphragm drive unit 1052B / BB / 1054B. When the annular voice coil unit 1054B senses the flow change of the electrical signal in the magnet unit 1056B and vibrates, it drives the diaphragm unit 1052B / 1052BB to vibrate and generate sound waves 1018BW to emit sound and present a stereoscopic sound in one dimension in the XY axis of the sound wave. At the same time, the rear diaphragm unit 1052B / 1052BB and the rear sponge unit 1058D are directly connected. Since the propagation of sound waves has three-dimensional properties and is also directional, the sound waves 1018BW of the diaphragm unit 1052B / 1052BB are transmitted forward, and at the same time, they are bounced back from the front sound effect unit 1032 and the resonator unit 1036 / 1036A and transmitted to the rear end, and then transmitted backward through the diaphragm unit 1052B / 1052BB into the rear sponge intercommunication unit 1058D, and then transmitted through the rear speaker unit 1018B to the rear end 1006B of the speaker cover, and resonance is formed in the rear sound effect unit 1032B and the rear sound resonator 1036B in the rear shell unit 1006B included and matched by the external system of the rear speaker 1018B, thereby generating the rear sound waves 1018BBW with a deeper Z-axis depth. The structure of the sponge intercommunication unit 1058D at the rear of the rear yoke iron shell unit 1060D of the rear speaker is to replace the role and function of the rear center sound hole unit 1058B.

[0267] The internal structure of the front speaker 1018A includes a diaphragm unit 1052A, an annular voice coil unit 1054A, a magnet unit 1056A, and a yoke unit 1060A. The diaphragm unit 1052A is connected to the annular voice coil unit 1054A. When the annular voice coil unit 1054A senses the flow change of the electrical signal in the magnet unit 1056A and generates vibration, the diaphragm unit 1052A is driven to vibrate and generate sound waves 1018AW to emit sound and present a stereo in one dimension of the sound wave XY axis. Since sound wave propagation has three-dimensional properties and is also directional, the sound wave 1018AW of the diaphragm unit 1052A, when transmitted forward, also bounces back from the front end sound effect unit 1032 and the resonator unit 1036 / 1036A in the front end portion 1006A included in and matched with the external structure of the front speaker 1018A, and is transmitted to the rear end, and then transmitted backward through the rear speaker diaphragm unit 1052B to enter the rear sponge communication unit 1058D, and then transmits through the rear speaker unit 1018B to the speaker. The rear end unit 1006B of the earmuff forms resonance in the rear end sound effect unit 1032B and the rear end sound resonator 1036B, and outputs forward from the rear end unit 1016 in the rear end 1006B of the earmuff to the front end sound output unit 1020 / 1020BBB at the front end 1006A of the earmuff, thereby generating a rear end sound wave 1018ABW with a deeper Z-axis depth, which resonates together with the rear end sound wave 1018BBW of the rear end speaker 1018B to achieve better XYZ three-dimensional stereo sound and its effects.

[0268] The structure of the yoke unit 1060D can also be varied. For example, the yoke unit 1060D can have a support unit 1060DA in front of the diaphragm unit 1052B / 1052BB and a support unit 1060DB behind the diaphragm unit 1052B / 1052BB. The front support unit 1060DA and the membrane edge of the diaphragm unit 1052B / 1052BB are tightly connected, and the rear support unit 1060DB is connected to the front support unit 1060DA and the rear end magnet shell unit 1056B, so that the diaphragm unit 1052B / 1052BB and the rear end sponge body communication unit 1058D can freely vibrate to generate and transmit sound waves that penetrate the front and rear. The yoke unit 1060D and its front and rear support units 1060DA / 1060DB can be varied, for example, bar-shaped, circular, arc-shaped, cross-shaped, rice-shaped, and star-shaped, hollow, solid, and the like.

[0269] The sponge is a very good material for transmitting sound waves. The micro-pore structure in the sponge has a good uniform and balanced effect on the transmission of sound waves. At the same time, the micro-pore (space) structure in the sponge can also transmit and resonate the sound waves synchronously. In this way, the membrane back of the diaphragm unit 1052B / 1052BB is directly connected to the sponge unit 1058B, and the sound waves are transmitted through the sponge 1058B to the rear sound effect unit 1032B and the rear sound resonator 1036B in the rear shell 1006B for resonance, which makes the sound wave frequency of the rear sound wave 1018ABW / 1018BBW in the front and back transmission stable, the sound wave shape is evenly distributed, and the overall balance of the sound wave is maintained, thereby generating and transmitting three-dimensional stereo with a smoother and deeper Z-axis depth. There can be a multi-hole gasket in front of the sponge 1058D connected to the tight membrane edge of the membrane back of the rear diaphragm unit 1052B. The multi-hole gasket in front of the sponge unit 1058D can also be connected to the magnet unit 1056B.

[0270] The sponge body can be varied. The sponge body unit 1058D can be a structure with dense small holes inside the sponge, or a structure with large, medium and small holes distributed, thick or thin, or partially sponge, or completely without sponge. There can also be no sponge body, and the back of the diaphragm unit 1052B / 1052BB is fully exposed and directly connected to the space inside the rear shell 1006B. The sound waves transmitted from the back of the diaphragm unit 1052B / 1052BB form 1018ABW / 1018BBW resonance in the rear sound effect unit 1032B and the rear sound resonator 1036B, thereby generating and transmitting three-dimensional stereo sound with a deeper Z-axis depth.

[0271] Therefore, in Figure 3 to Figure 4AA In the example, the sound-transmitting structure and function of the diaphragm unit 1052B / 1052BB of the rear speaker 1018B cooperates with the rear center through-hole unit 1058C / D to communicate and transmit the front and rear sound waves 1018AW / 1018BW, 1018ABW, and 1018BBW, and transmits them forward from the rear end of the rear unit 1006B, thereby achieving a three-dimensional stereo effect with a deeper Z-axis depth. Because the rear sound waves 1018ABW / 1018BBW and the front sound waves 1018AW / 1018BW have the optimized Z-axis depth sound effect of the sound wave depth distance 1084 / 1086, a better and deeper XYZ three-dimensional and spatial stereo effect is achieved.

[0272] Mentioned above and in Figure 1-5A All units shown in the drawings may include single or multiple units with any type of design, shape, material, format, system, function, location and structure.

[0273] All the above units can be changed in design, shape, structure, system, method, function, position and material as needed, so as to be applied to Figure 1-5A Various different embodiments of earphone 1000 are shown.

[0274] As required, explained above and in Figure 1-5A All units, functions and structures shown in the embodiment can be used, applied or interchanged in any figures and any units of the present application for all types of headphones 1000.

[0275] Figure 5 and Figure 5A is to show another example. The front speaker 1018A is designed in the sound output channel 1020BBB of the sound output unit 1020 directly connected to the front shell unit 1006A. As another front and rear speaker 1018A / 1018B front and rear arrangement combination series 1050 includes the rear diaphragm unit 1052B / 1052BB and the rear sound wave communication unit 1058B of the front and rear speakers 1018A and 1018B and the combination structure of related parts (i.e., a multi-layer diaphragm composite structure). The advantage of such a design is that the earphone is smaller in size and more refined as a whole. Due to the volume limitation of the sound output channel 1020BBB entering the human ear canal, the front speaker 1018A is mainly a small-volume dynamic speaker or a moving iron speaker, and the rear speaker 1018B is still mainly a dynamic speaker.

[0276] In this way, the entire acoustic space in the earphone cover 1006 is included in the sound output channel 1020BBB of the sound output unit 1020. The inner wall and the horn-shaped inlet wall of the sound output channel 1020BBB are also designed and structured as a part of the front sound unit 1032. The inner cavity of the sound output channel 1020BBB is also designed and structured as a part of the front sound resonator 1036. In this way, the external structure of the front speaker 1018A includes and cooperates with the front sound effect unit 1032 and the resonator unit 1036 / 1036A in the front end portion 1006A, as well as the sound output channel 1020BBB in the front sound output unit 1020. Such a design and structure has many advantages. First, since the front speaker is moved forward to the sound output channel 1020BBB, the overall size is actively reduced, which is more in line with the anatomy of the human ear and the wearing comfort. Second, the front speaker 1018A is moved forward, and the front sound wave 1018AW is closer to the eardrum in the ear canal of the human ear, and the sound effect is more direct and good. Third, the space of the front sound effect unit 1032 and the front sound resonator 1036 is also moved forward accordingly, and the resonance space of the front and rear sound waves is enlarged and lengthened, and the distance 1084 between the front and rear speakers is also lengthened accordingly. The rear diaphragm unit 1052B / 1052BB and the rear center sound hole unit 1058B have more space at the front and rear ends 1006A / 1006B, which is more conducive to the resonance and direct transmission of the front and rear sound waves 1018AW / 1018BW and 1018ABW / 1018BBW. That is to say, the front and rear sound wave axes 1088 are lengthened to directly connect from the sound output unit 1020BBB to the rear end diaphragm unit 1052B / 1052BB and the rear end center sound hole unit 1058B to the rear end sound effect unit 1032B and the rear end sound resonator 1036B in the rear end shell 1006B all the way to the rear end 1016. In this way, the resonance and transmission range of the rear end sound wave 1018ABW / 1018BBW in the Z-axis direction is increased to the maximum range, and the depth in the longitudinal direction of the Z-axis is lengthened to the maximum depth, thereby producing XYZ three-dimensional stereo with better and deeper depth effect.

[0277] At the same time, the diaphragm of the front speaker 1018A is facing upward at a right angle of 90 degrees to the diaphragm unit 1052B / 1052BB of the rear speaker 1018B. The direction line 1088AS of the front sound wave 1018AW is first facing upward, and then resonates with the rear sound wave 1018BW / 1018ABW / 1018BBW in the sound output channel, and then moves toward the front sound output unit 1020 and is input into the user's ear canal, producing better three-dimensional stereo sound with better Z-axis depth.

[0278] The front speaker 1018A can also be a ring iron speaker or a moving iron speaker or other forms of speakers arranged facing the front, so that the sound direction of the front speaker 1018A and the rear speaker 1018B is facing the same direction, or it can be arranged in a straight line front and back or arranged in a same position or staggered at multiple angles. The front speaker 1018A can also be a moving iron speaker arranged facing the rear, so that the sound direction of the front speaker 1018A and the rear speaker 1018B is facing each other, or it can be arranged in a straight line front and back or arranged in a same position or staggered at multiple angles.

[0279] At the same time, the front resonance and response space 1036 of the diaphragm unit 1052B / 1052BB of the rear speaker 1018B is also enlarged accordingly, and the rear sound waves 1018BW and 1018ABW / 1018BBW generated thereby will be directly output from the rear diaphragm unit 1052B and the rear center sound hole unit 1058B to the more resonance space 1036 to achieve a more direct sound wave playback effect. If the rear speaker 1018B is mainly mid-bass, the mid-bass performance at this time will be deeper and more powerful. The rear sound wave line 1088 with a more direct Z-axis depth is directly played and output forward in the enlarged space of the front sound effect unit 1032 and the front sound resonator unit 1036, thereby producing an enhanced and deeper Z-axis depth of excellent XYZ three-dimensional stereo and its effect.

[0280] Furthermore, the front and rear end speakers 1018A / 1018B front and rear arrangement combination 1050 may be a 90-degree right-angle front and rear arrangement structure and may also be varied. The front and rear end speakers 1018A / 1018B front and rear arrangement combination series 1050 may be a series of front and rear arrangement structures at various angles. For example, the angle between the front and rear diaphragm units 1052A / 1052B of the front and rear end speakers 1018A / 1018B may be a three-dimensional, all-round, multi-angle combination. Such a multi-angle combination has many advantages, one of which is preferably that when the front and rear diaphragm units 1052A / 1052B / 1052BB of the front and rear end speakers 1018A / 1018B are at a 90-degree angle, the loud high notes and bass reverberations and harmonies generated and transmitted by the front and rear diaphragm units 1052A / 1052B will produce a stronger sense of depth on the Z axis.

[0281] For another example, while the materials and structures of the front and rear diaphragm units 1052A / 1052B / 1052BB remain unchanged, a multi-angle combination of 0 to 45 degrees is used to achieve the best resonant coordination between the frequencies of the front and rear diaphragm units 1052A / 1052B / 1052BB, forming the best front and rear sound waves 1018AW / 1018BW and 1018ABW / 1018BBW, thereby producing better three-dimensional stereo sound.

[0282] In the above Figures 1 to 5A In all the embodiments shown, the earphone 1000 generates and transmits the front and rear sound waves 1018AW / 1018BW and 1018ABW / 1018BBW resonance through the communication and mutual cooperation of the front and rear diaphragm units 1052A / 1052B / 1052BB arranged in a straight line by the front and rear speakers 1018A / 1018B and the rear end sound hole 1058B, thereby realizing the earbud type earphone to generate and transmit three-dimensional stereo sound with better Z-axis depth.

[0283] As necessary, Figures 1 to 5A All units, functions and structures described can be applied to or interchanged with all types of headphones in any of the drawings of this application.

[0284] Mentioned above and in Figures 1 to 5A All units shown in the drawings may include single or multiple units with any type of design, shape, material, format, system, function, location and structure.

[0285] All the above units can be changed in design, shape, structure, system, method, function, position and material as needed, so as to be applied to Figures 1 to 5A Various different embodiments of earphone 1000 are shown.

[0286] As required, explained in the above full text and Figures 1 to 5A All units, functions and structures shown in the embodiment can be used, applied or interchanged in any figures and any units of the present application for all types of headphones 1000.

[0287] The diaphragm unit in the diaphragm speaker and the earphones that can produce three-dimensional stereo effects includes a single-layer diaphragm unit and / or a multi-layer composite diaphragm unit and / or a multi-layer combined diaphragm unit, and can be applied to the above-mentioned embodiments or other unspecified embodiments to achieve the purpose of the invention.

[0288] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0289] Although more terms are used in this article, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

1. An earphone that can produce a three-dimensional stereo effect using a diaphragm speaker, characterized in that: The invention comprises a speaker cover and a speaker combination system arranged in the speaker cover, wherein the speaker cover comprises a front part, a rear part, a front end sound effect unit arranged at the front part, a front end sound resonator arranged at the front part, a rear end sound resonator arranged at the rear part and a rear end sound effect unit arranged at the rear part; The speaker assembly system includes at least one front speaker disposed at the front of the speaker cover and at least one rear speaker disposed at the rear of the speaker cover; At least one of the rear speakers is a diaphragm speaker, the diaphragm speaker comprises a speaker unit, a diaphragm unit is provided on one side of the speaker unit, a sound wave channel unit penetrating the speaker unit is provided on the speaker unit, the speaker unit comprises a magnet unit, a yoke unit is provided on the edge of the magnet unit, and the diaphragm unit is arranged on one side of the sound wave channel unit; The speaker unit further comprises a diaphragm drive unit, the diaphragm drive unit comprises an annular voice coil unit arranged at the magnet unit, the diaphragm unit and the annular voice coil unit are connected and combined to form a multi-layer diaphragm composite structure or the main body of the system, and a diaphragm sound effect structure with multi-level or multi-region sound effect units and resonance space is formed between the diaphragm unit and the annular voice coil unit, which is used for synchronously transmitting and resonating sound waves; The sound wave channel unit includes a sound hole unit arranged behind the diaphragm unit, and a space structure arranged between the diaphragm unit and the sound hole unit, and two ends of the sound wave channel unit are respectively connected to the front sound resonator and the rear sound resonator; a sound controller disposed in the speaker housing; and a sound output unit connected to the speaker cover; Ergonomics is applied to headphones to produce, transmit, resonate and output three-dimensional stereo sound. The diaphragms and voice coils of the front and rear speakers are connected to the sound hole unit as the structure and function of the vocal cords and their membrane cavities connected to the glottis to produce, transmit and resonate sound waves. The rear end sound resonator serves as the structure and function of lung gas transmission and resonance. The front end sound resonator serves as the structure and function of oral gas circulation transmission and resonance. The sound output port unit serves as the mouth to output three-dimensional stereo sound.

2. The earphone capable of producing a three-dimensional stereo effect according to claim 1, characterized in that: The diaphragm unit includes any one or more combinations of a multi-layer composite diaphragm unit and a multi-layer combined diaphragm unit; A multi-layer composite diaphragm unit refers to multiple layers of diaphragms composited together; A multi-layer composite diaphragm unit refers to a multi-layer diaphragm unit that is independently arranged with the diaphragms spaced apart or with adjacent diaphragms in contact with each other.

3. The earphone capable of producing a three-dimensional stereo effect according to claim 2, characterized in that: The magnet unit is provided with an annular groove body, and the annular voice coil unit is arranged in the annular groove body.

4. The earphone capable of producing a three-dimensional stereo effect according to claim 2, characterized in that: The sound wave channel unit is arranged on the magnet unit, and an annular voice coil unit is arranged on the inner wall of the sound wave channel unit.

5. The earphone capable of producing three-dimensional stereo effect according to claim 1 or 4, characterized in that: The diaphragm driving unit comprises a central vibration rod connected to the diaphragm unit, and the central vibration rod is located in the sound wave channel unit.

6. The earphone capable of producing a three-dimensional stereo effect according to claim 1, characterized in that: The sound wave channel unit comprises at least one sound through hole unit arranged on the magnet unit and / or the yoke unit.

7. The earphone capable of producing a three-dimensional stereo effect according to claim 6, characterized in that: The sound wave channel unit also includes a sponge body which is arranged between the magnet unit and / or the yoke unit and passes through the speaker unit.

8. The earphone capable of producing a three-dimensional stereo effect according to claim 1, characterized in that: The front or rear part of the speaker cover or any one or more of the front sound effect unit or the rear sound effect unit has a shape that matches the directivity or guidance of the sound waves; the front sound resonator and / or the rear sound resonator has a space that matches the directivity or guidance of the sound waves.

9. The earphone capable of producing a three-dimensional stereo effect according to claim 8, characterized in that: The shape having directivity or guidance matching the sound waves includes any one or a combination of multiple shapes such as an arc, cone or straight shape of a horn; the space having directivity or guidance matching the sound waves includes a space formed by any one or a combination of multiple shapes such as an arc, cone or straight shape of a horn.

10. The earphone capable of producing three-dimensional stereo effect according to claim 1, characterized in that: The front-end speaker is the diaphragm speaker or the moving iron speaker.

11. The earphone capable of producing three-dimensional stereo effect according to claim 1, characterized in that: The front speaker is arranged in the sound output unit.

12. The earphone capable of producing three-dimensional stereo effect according to claim 1, characterized in that: The first central axis of the diaphragm unit of the front speaker is parallel to or coincides with the second central axis of the diaphragm unit of the rear speaker.

13. The earphone capable of producing three-dimensional stereo effect according to claim 1, characterized in that: The central axis of the diaphragm unit of the front speaker and the central axis of the diaphragm unit of the rear speaker are arranged at a certain angle to each other.

14. The earphone capable of producing three-dimensional stereo effect according to claim 13, characterized in that: The central axis of the diaphragm unit of the front speaker and the central axis of the diaphragm unit of the rear speaker are perpendicular to each other.

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