Speaker components and mobile terminals

Abstract

This disclosure relates to a speaker assembly and a mobile terminal. The speaker assembly includes: a speaker disposed inside the mobile terminal; and a sound focusing device including a first end and a second end connected to each other. The second end includes multiple sound channels. The first end of the sound focusing device is connected to the sound outlet of the speaker, and the second end is connected to the outside of the mobile terminal. The speaker emits sound from the sound outlet, which passes through the multiple sound channels and is emitted to the outside of the mobile terminal. The path lengths of the multiple sound channels are not identical, and the inner walls of the sound channels are rigid rods. This design eliminates the need for multiple speaker combinations, achieving sound focusing through acoustic metamaterials. This reduces the number of components inside the mobile terminal, saving space. It is also simple to install, easy to operate, and easier to implement.

Description

Technical Field

[0001] This disclosure relates to the field of electronic products, and in particular to speaker assemblies and mobile terminals. Background Technology

[0002] People use mobile devices such as mobile phones and computers in various aspects of life. For example, they watch videos or make phone calls on tablets or mobile phones on the subway. In some public places, when using mobile devices such as mobile phones and computers, the sound is not directional, which means that people around can hear the sound from the mobile phone or computer, thus compromising the user's privacy. Summary of the Invention

[0003] To overcome the problems existing in the related technologies, this disclosure provides a speaker assembly and a mobile terminal.

[0004] According to a first aspect of the present disclosure, a loudspeaker assembly is provided, wherein the loudspeaker assembly may include: an application in a mobile terminal, the loudspeaker assembly comprising: a loudspeaker disposed inside the mobile terminal; a sound focusing device including a first end and a second end connected to each other, the second end including a plurality of sound channels, the first end of the sound focusing device being connected to the sound outlet of the loudspeaker, and the second end being connected to the outside of the mobile terminal; the loudspeaker emitting sound from the sound outlet, passing through the plurality of sound channels, and emitting it to the outside of the mobile terminal; wherein the path lengths of the plurality of sound channels are not exactly the same, and the inner wall of the sound channel is a rigid rod.

[0005] According to some embodiments of this disclosure, one end of the plurality of sound channels connected to the outside of the mobile terminal is divided into a first part and a second part. When the sound passes through the first part of the plurality of sound channels, it is focused in a first region, and when it passes through the second part, it is focused in a second region.

[0006] According to some embodiments of this disclosure, multiple isolation switches are provided inside the plurality of audio channels, and the plurality of isolation switches can be used to control the plurality of audio channels to be turned on or off respectively.

[0007] According to some embodiments of this disclosure, the loudspeaker and the plurality of sound channels may move toward or relative to each other.

[0008] According to some embodiments of this disclosure, the path lengths of the plurality of sound channels decrease from the center position near the sound outlet outwards.

[0009] According to some embodiments of this disclosure, the openings at the other ends of the plurality of sound channels are oriented toward the center of the sound focusing device.

[0010] According to some embodiments of this disclosure, the sound focusing device may further include a connecting end disposed at the first end of the sound focusing device, the first end of the connecting end being open and communicating with the sound outlet; the second end of the connecting end being connected to the plurality of sound channels.

[0011] According to some embodiments of this disclosure, the connecting end is tapered, and the cross-sectional area of ​​the first end is smaller than the cross-sectional area of ​​the second end.

[0012] According to some embodiments of this disclosure, the sound focusing device may include: a sound labyrinth having multiple bent sound channels, one end of which is connected to the second end of the connecting end; the other end is connected to the outside of the mobile terminal to form the multiple sound channels; the sound labyrinth is made of a rigid rod, or the inner wall of the bent sound channel is formed with a first reflective layer made of a rigid rod.

[0013] According to some embodiments of this disclosure, the size of the sound labyrinth corresponds to the sound outlet and is adhered to the inside of the sound outlet by means of adhesive.

[0014] According to some embodiments of this disclosure, the second end of the connecting end has multiple connecting holes; the sound focusing device includes multiple pipes, each pipe having one end connected to a corresponding connecting hole of the connecting end and the other end connected to the outside of the mobile terminal, forming the sound channel. The pipes are made of rigid rods, or the inner wall of the pipes has a second reflective layer made of rigid rods.

[0015] According to some embodiments of this disclosure, the multiple pipes are not of the same length, and each pipe is independently disposed inside the mobile terminal.

[0016] According to some embodiments of this disclosure, the plurality of pipes have different lengths, and / or the plurality of pipes are filled with a filling material; the pipes are provided with a maze path inside, which is used to form a tortuous passage inside the pipes and prolong the sound transmission time.

[0017] According to some embodiments of this disclosure, the plurality of pipes are filled with a material in a preset ratio.

[0018] According to a second aspect of the present disclosure, a mobile terminal is provided, including any of the speaker components described above.

[0019] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects:

[0020] When a user uses a mobile terminal equipped with a sound-focusing device, the sound emitted from the speaker is directed through this device, preventing it from propagating to surrounding areas. The sound is transmitted in a designated direction via multiple channels of the device, with stronger volume and greater range in that direction. This ensures the directional nature of the sound emitted by the speaker; users in the direction of sound propagation can hear it, while others in other locations cannot, guaranteeing user privacy and preventing disturbance to others when using the speaker in public places.

[0021] The speaker assembly disclosed herein, through the above-described technical solution, requires only one speaker to be installed inside the mobile terminal. A sound-focusing device is installed at the speaker's outlet to achieve sound focusing, making the sound emitted by the speaker directional and protecting user privacy. It eliminates the need for multiple speaker combinations, achieving sound focusing through acoustic metamaterials, reducing the number of components within the mobile terminal, saving space, and offering advantages such as simple installation, easy operation, and greater ease of implementation.

[0022] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0023] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0024] Figure 1 This is a schematic diagram of a speaker assembly according to an exemplary embodiment.

[0025] Figure 2 This is a schematic diagram of another speaker assembly according to an exemplary embodiment.

[0026] Figure 3 This is a diagram illustrating the sound focusing effect of a loudspeaker assembly according to an exemplary embodiment.

[0027] Figure 4 This is a flowchart illustrating the audio processing circuit of a mobile phone according to an exemplary embodiment.

[0028] Figure 5 This describes the working principle of a speaker circuit according to an exemplary embodiment.

[0029] Figure 6 This is a schematic diagram of a mobile phone circuit board according to an exemplary embodiment. Detailed Implementation

[0030] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0031] Figure 1 This is a speaker assembly illustrated according to an exemplary embodiment, such as Figure 1 As shown, when applied to a mobile terminal, the speaker assembly may include: a speaker 10, which is disposed inside the mobile terminal; a sound focusing device 20, including a first end and a second end connected to each other, the second end including multiple sound channels 21, the first end of the sound focusing device 20 being connected to the sound outlet 11 of the speaker 10, and the second end being connected to the outside of the mobile terminal; the speaker 10 emits sound from the sound outlet 11, which passes through the multiple sound channels 21 and is emitted to the outside of the mobile terminal; wherein, the path lengths in the multiple sound channels 21 are not exactly the same, and the inner wall of the sound channel 21 is a rigid rod.

[0032] The mobile terminal can be an electronic product with a speaker, such as a mobile phone, computer, or smartwatch. The second end of the sound focusing device 20 includes multiple sound channels 21, which can have different lengths. The inner wall of the sound channels 21 can be made of rigid rods, which can save manufacturing costs. Alternatively, the sound focusing device 20 can be made of rigid rods, which can reduce the volume or thickness of the sound focusing device 20, making it smaller and more space-saving.

[0033] Sound travels through a medium. Sound is produced by the vibration of objects; it is a wave, a fluctuation generated by the vibration of matter, and needs a medium to travel in order to be heard. The speed at which sound waves travel in a medium is called the speed of sound. The speed of sound varies in different media; the speed of sound in air is 340 m / s.

[0034] Metamaterials are a class of man-made materials with special properties. They have precise geometric structures and sizes, and their microstructures and sizes are smaller than the wavelengths they affect, thus allowing them to influence the waves that affect them. They possess some special properties, such as changing the normal properties of light and electromagnetic waves, effects that cannot be achieved in traditional materials.

[0035] Acoustic metamaterials can process and manipulate sound waves in unconventional ways, often possessing performance parameters not found in traditional materials. They are artificially manufactured composite structures whose structural units are much smaller than the wavelength of sound waves, exhibiting properties that surpass the behavior of naturally occurring materials, such as negative refraction, anomalous Doppler effect, and planar focusing. The negative refraction property of acoustic metamaterials means that these materials completely reflect sound waves, preventing sound propagation.

[0036] When a user uses a mobile terminal equipped with a sound focusing device 20, the sound focusing device 20 is installed at the sound outlet 11 of the mobile terminal's speaker 10. The sound focusing device 20 may include multiple sound channels 21. One end of each sound channel 21 is connected to the mobile terminal's speaker 10, and the other end is connected to the outside of the mobile terminal. The mobile terminal typically has a sound outlet, and the other opening of each sound channel 21 is connected to this sound outlet. Multiple sound outlets can be provided, and the multiple sound channels 21 can be connected to different sound outlets. The connection order can be determined based on the distance between each sound outlet and the multiple sound channels 21, with those closer being connected first. Since the multiple sound channels 21 are hollow pipes with rigid inner walls, sound does not propagate through the inner walls of the multiple sound channels 21. The multiple sound channels 21 provide a channel for sound propagation, and the speed of sound in air is a fixed value. The path lengths of the multiple sound channels 21 are not entirely the same. This difference in path length results in different propagation distances for the sound within each channel. Longer path channels can be used closer to the sound outlet, while shorter path channels can be used farther away. This arrangement ensures that sound waves arriving at the outlet at the same time as those closer, avoiding interference and guaranteeing proper directional sound propagation. This ensures the user receives the sound emitted by the speaker 10. The different path lengths can be achieved by using multiple sound channels of varying lengths or by incorporating bends in the inner walls of the channels. This makes the sound emitted by the speaker 10 stronger and travels farther in a specific direction. The path length can also be adjusted based on the distance between the sound outlet and the user, ensuring that sounds farther from the user arrive first, while sounds closer arrive later, guaranteeing that the sound reaches the user's location simultaneously. The sound emitted by the speaker 10 is focused by the sound-concentrating device 20, ensuring that the sound does not propagate to the surroundings. Furthermore, the sound is directed to a specific direction through the multiple sound channels 21 of the sound-concentrating device 20. This ensures that the sound emitted by the speaker 10 is directional; users in the direction of sound propagation can hear it, while others in other locations cannot hear it, thus guaranteeing user privacy and preventing interference with other people when using the speaker 10 in public places.

[0037] The speaker assembly disclosed herein, through the above technical solution, requires only one speaker 10 to be installed inside the mobile terminal. A sound focusing device 20 is installed at the sound outlet 11 of the speaker 10 to achieve sound focusing, making the sound emitted by the speaker 10 directional and protecting user privacy. It eliminates the need for multiple speaker combinations, achieving sound focusing through algorithms, reducing the number of components within the mobile terminal, saving space, and offering advantages such as simple installation, easy operation, and ease of implementation.

[0038] For example, the mobile terminal is a mobile phone, and the speaker 10 is a speaker inside the mobile phone. With the speaker assembly disclosed in this disclosure, only one speaker 10 needs to be installed inside the mobile phone to achieve sound focusing, so that the sound emitted by the speaker 10 can be propagated in a specified direction. This can reduce the number of speakers inside the mobile phone, reduce manufacturing costs, and save space inside the mobile phone, providing more space for other components inside the mobile phone. For example, a larger battery can be placed, thereby increasing the battery capacity and thus increasing the standby time of the mobile phone.

[0039] According to some embodiments of this disclosure, one end of the plurality of sound channels 21 connected to the outside of the mobile terminal is divided into a first part and a second part. When sound passes through the first part of the plurality of sound channels, it is focused in a first region, and when it passes through the second part, it is focused in a second region. The opening directions of the plurality of sound channels 21 can be set to face different directions; for example, the opening directions of the plurality of sound channels 21 can be set to face the positions of the user's two ears, with the first part corresponding to the left ear and the second part corresponding to the right ear. This ensures that the sound heard by both of the user's ears is the same, further guaranteeing the sound effect.

[0040] According to some embodiments of this disclosure, multiple isolation switches are provided inside the multiple sound channels 21, and the multiple isolation switches can control the multiple sound channels 21 to turn on or off respectively. By controlling the opening or closing of each sound channel 21 by controlling the isolation switches, corresponding control keys can be provided on the outside of the mobile terminal, which the user can adjust according to their needs to adjust the sound emission position to the desired position. For example, the control keys connected to the isolation switches are button-type, with different keys having different modes, each mode corresponding to turning on a different isolation switch; or the control keys connected to the isolation switches are rotary, with different rotation angles corresponding to turning on different isolation switches, thereby realizing the control of multiple sound channels 21. The control keys can also be in the software of the mobile terminal. When the user needs to adjust, they can open the control software of the mobile terminal and then adjust the control keys.

[0041] According to some embodiments of this disclosure, the speaker 10 and the plurality of sound channels 21 can move towards or relative to each other. The movement of the speaker 10 and the plurality of sound channels 21 can be controlled via movement control buttons. These movement control buttons can be located externally to the mobile terminal or within the mobile terminal's software. When the user needs to adjust, they can open the mobile terminal's control software to adjust the distance between the speaker 10 and the plurality of sound channels 21. Different distances between the speaker 10 and the plurality of sound channels 21 result in different travel distances for the sound emitted by the speaker 10 to reach the plurality of sound channels 21, thereby changing the position of sound focusing.

[0042] According to some embodiments of this disclosure, the path lengths of the multiple sound channels 21 decrease from the center of the sound outlet 11 towards the periphery. The path lengths of the multiple sound channels 21 are not entirely the same; the sound channels 21 at the center of the sound outlet 11 are relatively long, decreasing towards the periphery, meaning the sound channels 21 at the edges of the sound outlet 11 are the shortest. Generally, the center of the sound outlet 11 is closer to the sound hole of the mobile terminal, while the edges are farther from the sound hole. This arrangement of varying lengths of the multiple sound channels 21 shortens the sound wave propagation path at the edges of the sound outlet 11, making it approximately the same as or similar to the path at the center. This ensures that the sound waves at the edges and the center arrive at the sound hole of the mobile terminal simultaneously, increasing the sound focusing effect, guaranteeing sound intensity, and preventing interference between sound waves caused by their inability to arrive simultaneously. The longer sound channels 21 at the center can be lengthened by bending and wrapping around them to match the length of the shorter sound channels 21 at the edges. Simultaneously, the sound channels at the center of the sound outlet are longer, while those at the edges are shorter. This is because the sound emitted by the speaker 10 is focused at a point outside the mobile terminal, and the sound at the edges travels a longer distance than the sound at the center. This arrangement ensures that the sound at the edges reaches the sound outlet first, followed by the sound at the center, guaranteeing that all sounds arrive at the same point simultaneously. The distances traveled by the sound at the edges and center can be calculated based on the location of sound focus, and the distance difference can be used to set the lengths of the sound channels at the edges and center, achieving sound focusing and ensuring user privacy when listening to audio on the mobile terminal.

[0043] According to some embodiments of this disclosure, the openings at the other ends of the plurality of sound channels 21 face the center of the sound focusing device 20. The plurality of sound channels 21 are located at the external connection point of the mobile terminal, i.e., at the sound outlet. The plurality of sound channels 21 are arranged converging towards the center of the sound focusing device 20, ensuring the convergence of sound wave propagation and directing the sound in a unified direction or to a single point. Since the internal space of the mobile terminal is limited, the plurality of sound channels 21 can be distributed to avoid other internal components of the mobile terminal, converging at the sound outlet at the edge of the mobile terminal. This makes full use of the limited space and ensures a focused sound effect.

[0044] According to some embodiments of this disclosure, the sound focusing device 20 may further include a connecting end 12 disposed at the first end of the sound focusing device 20. The first end of the connecting end 12 is open and communicates with the sound outlet 11; the second end of the connecting end 12 is connected to multiple sound channels 21. The opening at the first end of the connecting end 12 is connected to the sound outlet 11, and the opening at the first end of the connecting end 12 can cover the sound outlet 11. The other end of the connecting end is connected to multiple sound channels 21, ensuring that all sound waves emitted by the speaker 10 that enter the sound outlet 11 pass through the sound focusing device 20, that is, enter the multiple sound channels 21, ensuring that no sound waves propagate through other paths, thus ensuring the efficiency of sound propagation and the focusing effect.

[0045] According to some embodiments of this disclosure, such as Figure 1 As shown, the connecting end 12 is conical, with the cross-sectional area of ​​the first end being smaller than that of the second end. Since the sound outlet 11 of the speaker 10 in a typical mobile terminal is relatively small, the first end connects to the sound outlet 11, and its size corresponds to the sound outlet 11. The connecting end 12 is a conical cylindrical structure, with the cross-sectional area of ​​the first end of the connecting end 12 being smaller than that of the second end. The diameter of the second end is larger, which is more conducive to sound focusing. Moreover, the larger area of ​​the second end allows for the connection of more sound channels 21. The connecting end 12 is made of acoustic metamaterial, or the inner wall of the connecting end 12 is lined with acoustic metamaterial. The connecting end 12 can also be cylindrical, with the cross-sectional area of ​​the first end equal to that of the second end. The first end of the cylindrical or conical connecting end 12 connects to the speaker 10, and the second end connects to multiple sound channels 21.

[0046] Figure 2 This is a schematic diagram of another speaker assembly according to an exemplary embodiment. According to some embodiments of this disclosure, such as... Figure 1 and Figure 2As shown, the sound labyrinth 30 forms multiple bent sound channels 31. One end of each bent sound channel 31 is connected to the second end of the connecting end 12; the other end is connected to the outside of the mobile terminal, forming multiple sound channels 21. The sound labyrinth 30 is made of acoustic metamaterial, or the inner wall of the bent sound channels 31 has a first reflective layer made of acoustic metamaterial. The connecting end is connected to the sound outlet 11 of the speaker 10, and the second end of the connecting end 12 is connected to the sound labyrinth 30. Through the connecting end 12, it is ensured that the sound waves emitted by the speaker 10 through the sound outlet 11 enter the sound labyrinth 30, and through the multiple bent sound channels 31 within the sound labyrinth 30, a sound focusing effect is achieved. The sound maze 30 features a winding path for the zigzag sound channels 31, with varying lengths. The zigzag sound channels 31 at the center of the sound maze 30 are longer, while those at the periphery are shorter. The length of the zigzag sound channels 31 decreases from the center outwards. Furthermore, the openings of the zigzag sound channels 31 face the center of the sound maze 30 to ensure that sound waves from the edges can converge with those in the center and propagate to the designated area. The sound maze 30, as a single sound-gathering device 20, connects to the sound outlet 11 of the speaker 10 via the connection terminal 12. This eliminates the need to consider the layout of the multiple sound channels 21, simplifying installation and making it easily achievable.

[0047] Generally, the sound outlet 11 of the speaker 10 of the mobile terminal is relatively small, and the size of the sound labyrinth 30 may be larger than the sound outlet 11. The sound labyrinth 30 is connected to the sound outlet 11 through the connecting end 12, so that the connection between the sound outlet 11 and the sound labyrinth 30 can be more sealed. The connecting end 12 can be made of acoustic metamaterials to ensure that the sound will not spread to other directions, and further ensure the sound focusing effect.

[0048] The sound maze 30 is made entirely of acoustic metamaterials, which reduces its size and saves internal space in the mobile terminal. The inner wall of the sound maze 30 is provided with a first reflective layer, which is also made of acoustic metamaterials, thus reducing the manufacturing cost of the sound maze 30.

[0049] The inner wall of the sound maze 30 can be made of multiple bent channels, i.e. multiple bent sound channels 31, with one end of each bent sound channel 31 connected to the second end of the connecting end 12 to form multiple sound channels 21, and the other end of each bent sound channel 31 opening into the sound outlet of the mobile terminal.

[0050] The interior of the sound maze 30 can be multiple honeycomb structures made of acoustic metamaterials. Each honeycomb structure has two openings, and one opening of each honeycomb is connected to one opening of another honeycomb. By arranging multiple honeycombs, multiple bent sound channels 31 of different lengths are combined. One end of each bent sound channel 31 is connected to the second end of the connecting end 12 to form multiple sound channels 21. The other end of each bent sound channel 31 opens into the sound outlet of the mobile terminal.

[0051] According to some embodiments of this disclosure, the size of the acoustic maze 30 corresponds to that of the sound outlet 11, and it is adhered to the inside of the sound outlet 11 by adhesive. The acoustic maze 30 is directly adhered to the inside of the sound outlet 11, and their sizes correspond, ensuring that all sound waves propagate through the multiple bends in the acoustic maze 30. Furthermore, placing the acoustic maze 30 inside the sound outlet 11 saves internal space in the mobile terminal.

[0052] According to some embodiments of this disclosure, the second end of the connecting end 12 is provided with multiple connecting holes; the sound focusing device 20 includes multiple pipes, one end of each pipe is connected to a corresponding connecting hole of the connecting end 12, and the other end is connected to the outside of the mobile terminal to form a sound channel 21. The pipes are made of rigid rods, or the inner wall of the pipes is formed with a second reflective layer made of rigid rods. The second end of the connecting end is provided with multiple connecting holes. If the sound focusing device 20 is provided with multiple pipes, the multiple pipes are connected to the multiple connecting holes of the second end of the connecting end, and the multiple pipes can be directly inserted into the multiple connecting holes to form multiple sound channels 21. The second end of the connecting end 12 can be set as a socket, and each connecting hole socket is a socket, and the multiple pipes are plugs. The multiple pipes are connected to the multiple connecting holes through the plugs and sockets, which is more convenient for installation. Alternatively, one end of the sound maze 30 can be provided with multiple pipes, which are connected to the multiple connecting holes of the second end of the connecting end, wherein the multiple pipes are connected to the multiple bent sound channels 31 of the sound maze 30 to form multiple sound channels 21. Among them, multiple pipes are made of rigid rods as a whole, which can ensure that the multiple pipes are relatively thin and small in size, thus saving internal space of the mobile terminal; the second reflective layer on the inner wall of multiple pipes is made of rigid rods, which can reduce the manufacturing cost of multiple pipes.

[0053] According to some embodiments of this disclosure, the lengths of the multiple pipes are not exactly the same, and each pipe is independently disposed inside the mobile terminal. The varying and independent lengths of each pipe allow for layout based on the internal space distribution of the mobile terminal. The pipe at the center of the sound outlet 11 is longer, while those at the edges are shorter. The longer pipes can bend to avoid obstacles and reach the sound outlet of the mobile terminal, while the shorter pipes can connect directly to the sound outlet. Each pipe is distributed within the mobile terminal, and they converge at the sound outlet. This allows for flexible placement of the sound-focusing device 20, making full use of the limited internal space of the mobile terminal. For example, if the mobile terminal is a mobile phone and the speaker 10 is an internal speaker, the routing of each pipe can be arranged using the gaps between components inside the phone, without unnecessarily occupying other internal space. Furthermore, there is no need to separately designate an installation location for the sound-focusing device 20, allowing the speaker assembly of this disclosure to be applied to any mobile phone.

[0054] According to some embodiments of this disclosure, the multiple pipes have different lengths, and / or the multiple pipes are filled with a filling material; a maze path is provided inside the pipes to create a tortuous passage and prolong the sound transmission time. The maze path inside the pipes can be achieved by providing small blocks inside the pipes to create a tortuous passage and prolong the sound transmission time; the small blocks can be made of rigid rods.

[0055] According to some embodiments of this disclosure, multiple pipes are filled with a pre-defined proportion of material. The pre-defined proportion, for example, involves filling each pipe of equal length with material according to the curvature of the sound field, such that the effective volume of the filled pipes approximately constitutes the curvature of the sound field. The material can be a sound-absorbing metamaterial or other materials, such as sound-absorbing foam or zeolite powder. After filling with sound-absorbing material, according to Biot's equivalent theory of porous materials, the equivalent sound velocity is reduced. The filling material alters the speed of sound propagation within the pipes. By controlling the amount of filling material or whether to include it, the sound from multiple pipes can arrive at a point simultaneously, ensuring simultaneity. The filling material can change the speed of sound within the pipes. By setting different proportions of filling material within the pipes, the sound velocity at the edges is faster than at the center, ensuring that when the sound reaches a point outside the mobile terminal, the sound emitted from the edges and the sound emitted from the center arrive at that point synchronously. Alternatively, each pipe can be of equal length, and the time it takes for the sound to reach the sound outlet can be controlled by the amount of filling material.

[0056] Each sound channel has a diameter of 1mm or greater to avoid damping caused by excessive thinness, which could affect playback. Each sound channel is made of rigid materials, such as plastic or metal, and is manufactured using 3D printing technology.

[0057] According to some embodiments of this disclosure, a second aspect of this disclosure provides a mobile terminal including any of the aforementioned speaker components. The mobile terminal can be a computer, walkie-talkie, mobile phone, smartwatch, speaker, or other device. The speaker component of this disclosure enables users to use the external speaker function of their mobile terminal, especially in public places, such as when watching videos on a mobile phone on the subway. The speaker component allows the sound emitted by the speaker to have a certain directionality, ensuring that the user can hear the sound while others cannot, thus protecting the user's privacy and preventing interference with other people.

[0058] Figure 3 This is a diagram illustrating the sound focusing effect of a loudspeaker assembly according to an exemplary embodiment. For example... Figure 3 As shown, the first curve 61 is the sound propagation range curve of the speaker of a mobile terminal without the speaker assembly of this disclosure, and the second curve 62 is the sound propagation range curve of the speaker 10 of the mobile terminal with the speaker assembly of this disclosure installed. Figure 3 As can be seen, the sound emitted by the speaker 10 equipped with the speaker assembly of this disclosure is mostly concentrated in a small designated area, with a very obvious sound focusing effect, which can effectively concentrate the sound and prevent the sound from propagating in other directions.

[0059] Acoustic metamaterials refer to periodic structures composed of subwavelength units. Due to the subwavelength characteristics of their constituent units, they exhibit continuity in the bulk material and possess significantly different wave characteristics compared to traditional materials, similar to optical metamaterials. Acoustic metamaterials are used to modulate sound waves and elastic waves. The periodic combination of these subwavelength structures as a bulk material exhibits acoustic properties similar to the response of optical metamaterials to electromagnetic waves, leading to new methods of sound wave manipulation. By using acoustic metamaterials and leveraging their properties, a sound-focusing device 20 is fabricated to achieve the effect of focusing sound onto the speaker 10 of a mobile terminal.

[0060] The speaker assembly disclosed herein can also be applied to other electronic devices, such as audio guides for museums or art exhibitions. Each artwork corresponds to one audio guide, and each audio guide is equipped with the speaker assembly disclosed herein. This ensures that the sounds emitted by different audio guides do not interfere with each other. When a visitor is at a particular artwork, they can only hear the explanation related to that artwork. This ensures the effectiveness of the explanation, avoids interference between different audio guides, and reduces noise in the exhibition hall. It can also be applied to bank service windows. Each window's speaker is equipped with the speaker assembly disclosed herein, preventing other people around the window from hearing the sound in the designated area of ​​the window, ensuring the privacy of those conducting business, and also reducing sound interference between different windows.

[0061] According to some embodiments of this disclosure, a loudspeaker, also known as a horn, is an electroacoustic device that converts electrical energy into sound energy. It can be used in mobile terminals or other electronic devices to support audio output functions. The principle of a loudspeaker is that current passes through a coil in a magnetic circuit composed of magnets, generating a driving force in the up-down direction to vibrate a vibrating body, which in turn causes the air to vibrate, producing sound.

[0062] According to some embodiments of this disclosure, a mobile phone speaker includes a vibrating plate, a protector, an anode, an electromagnetic coil, a metal ring, a magnet, and a gasket. The vibrating plate is a vibrating element (plastic membrane) that causes air to vibrate; it is one of the main components of the speaker, and MCPET material is commonly used. The protector protects the vibrating plate (made of metal). The anode is a metal plate used to concentrate magnetic lines of force around the electromagnetic coil. The electromagnetic coil is a coil that generates a driving force when current flows through it. The metal ring is used to concentrate magnetic lines of force around the electromagnetic coil. The magnet is used to emit magnetic lines of force. The gasket is used to suppress the vibration (air brake) and prevent dust accumulation.

[0063] According to some embodiments of this disclosure, the speaker is generally connected to a circuit board via a contact, and the audio processing circuit on the circuit board is connected to the speaker signal to control the speaker's operating state.

[0064] Figure 4 This is a flowchart illustrating the audio processing circuitry of a mobile phone according to an exemplary embodiment. According to some embodiments of this disclosure, such as... Figure 4 As shown, the audio processing circuit of a mobile phone operates as follows: When a call is answered, the 67.707kHz received baseband information (RXI-P, RXI-N, RXQ-P, RXQ-N) is first demodulated from the radio frequency circuit and sent to the baseband processor for digital narrowband demodulation (GMSK), separating the control signal and the voice signal; then, the voice signal undergoes a series of processing steps such as decryption, deinterleaving, and reconstruction, followed by channel decoding and voice decoding; finally, a pure digital voice signal is obtained and sent to the multi-mode converter in the voice signal processor for digital-to-analog (D / A) conversion; after being restored to an analog audio signal, it is amplified by audio power and drives the earpiece (EAR) to produce sound.

[0065] Figure 5This describes the working principle of a speaker circuit according to an exemplary embodiment. The speaker circuit works as follows: The voice processor N2200 outputs a hands-free audio signal from pins K2 and K3. This signal is amplified by the audio power amplifier N2150, and then the amplified hands-free audio signal is output from pins B1 and C1 of the audio power amplifier N2150. This signal is filtered by filters L2158 and L2159 to remove high-frequency interference, and then passes through the ESD circuit V2150 before being output to the speaker B2150, driving the speaker to produce sound. Figure 5 As shown in the diagram. C2153 and C2154 are used to filter out high-frequency and low-frequency interference in the power supply, while V2150 is an ESD circuit, i.e., an electrostatic discharge protection circuit.

[0066] Circuit boards can be classified by their rigidity into rigid boards, flexible boards, and rigid-flex boards. They can also be classified by the number of circuit layers into single-sided boards, pseudo-double-sided boards, double-sided boards with metallized vias, and multilayer boards.

[0067] A typical circuit board consists of the following components: Circuitry and Pattern: Circuitry serves as the means of conduction between components. A large copper area is designed separately for grounding and power layers. Circuitry and pattern are fabricated simultaneously. Dielectric Layer: Used to maintain insulation between circuitry and layers; commonly known as the substrate. Through Hole / Via: Through holes allow conduction between circuitry on two or more layers. Larger through holes are used for component insertion. Non-through holes (nPTH) are typically used for surface mount positioning and for securing screws during assembly. Solder Resist / Solder Mask: Not all copper surfaces need to be soldered. Therefore, non-solderable areas are coated with a material (usually epoxy resin) to prevent short circuits between non-solderable circuitry. Depending on the manufacturing process, this is categorized as green solder mask, red solder mask, or blue solder mask. Silkscreen (Legend / Marking / Silk screen): This is not a necessary component. Its main function is to mark the names and locations of various components on the circuit board for easy identification and maintenance after assembly. Surface Finish: Because copper surfaces are easily oxidized in normal environments, they cannot be soldered (poor solderability). Therefore, protective measures are applied to the copper surfaces that will be soldered. Protection methods include HASL (Hydrogen Spray Soldering), ENIG (Enhanced Iron Infusion), Immersion Silver, Immersion Tin, and OSP (Organic Solder Protectant). Each method has its advantages and disadvantages, and they are collectively referred to as surface finishing.

[0068] According to some embodiments of this disclosure, the mobile phone circuit board mainly consists of a baseband section, a radio frequency section, and other sections. These other sections include: a CPU, memory, various controllers including a touchscreen, Bluetooth, Wi-Fi, sensors, etc. There are also interfaces for microphones, earpieces, speakers, cameras, and display screens. Some mobile phone circuit boards include a main PCB board and a secondary PCB board. The main PCB board includes a Wi-Fi module, a camera, an earphone jack, a microUSB interface, and various ribbon cables. The secondary PCB board houses a speaker, a microphone, and ribbon cables connecting the two PCB boards.

[0069] According to some embodiments of this disclosure Figure 6 This is a schematic diagram of a mobile phone circuit board according to an exemplary embodiment. Figure 6 In this embodiment of the mobile phone circuit board, a motherboard 111 may be included. The motherboard 111 is a common multi-layer PCB circuit board. A baseband module connector 112 and an RF module connector 113 are disposed on the motherboard 111. The baseband module connector 112 typically includes multi-pin pads for soldering the baseband module chip and power management chip to the motherboard 111. The RF module connector 113 also typically has multi-pin pads for soldering the RF module chip to the motherboard 111. The baseband module chip and power management chip are responsible for encoding. The RF module chip includes an RF processor and an RF power amplifier, which implement signal transmission and reception functions. The baseband module chip and RF module chip respectively implement the baseband signal processing and RF signal processing of the mobile phone. Therefore, the baseband module connector 12 and RF module connector 113 on the motherboard 111 play an important role in realizing the communication functions of the mobile phone. The motherboard 111 also includes a headphone jack connector 114, a speaker connector 115, an indicator light connector 116, a microphone connector 117, and a power socket connector 118. These connectors are respectively used to electrically connect the headphone jack, speaker, indicator light, microphone, and power socket, and are typically solder pad connectors.

[0070] Based on the same concept, embodiments of this disclosure also provide a loudspeaker assembly device.

[0071] It is understood that the speaker assembly device provided in this disclosure includes hardware structures and / or software modules corresponding to each function in order to achieve the above-mentioned functions. In conjunction with the units and algorithm steps of the various examples disclosed in this disclosure, this disclosure can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed by hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the technical solutions of this disclosure.

[0072] It is understood that in this disclosure, "multiple" refers to two or more, and other quantifiers are similar. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. The singular forms "a," "the," and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0073] It is further understood that the terms "first," "second," etc., are used to describe various types of information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another, and do not indicate a specific order or degree of importance. In fact, the expressions "first," "second," etc., are completely interchangeable. For example, without departing from the scope of this disclosure, first information can also be referred to as second information, and similarly, second information can also be referred to as first information.

[0074] It is further understood that the terms “center,” “longitudinal,” “lateral,” “front,” “rear,” “up,” “down,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this embodiment and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation.

[0075] It can be further understood that, unless otherwise specified, "connection" includes both direct connections where no other components exist between the two parties and indirect connections where other components exist between them.

[0076] It is further understood that although operations are described in a specific order in the accompanying drawings in the embodiments of this disclosure, this should not be construed as requiring these operations to be performed in the specific order or serial order shown, or requiring all of the shown operations to be performed to obtain the desired result. In certain environments, multitasking and parallel processing may be advantageous.

[0077] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following scope of claims.

[0078] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A loudspeaker assembly, characterized in that, The speaker assembly, used in a mobile terminal, includes: A speaker, wherein the speaker is disposed inside the mobile terminal; A sound focusing device includes a first end and a second end connected together. The second end includes multiple sound channels. The first end of the sound focusing device is connected to the sound outlet of the loudspeaker, and the second end is connected to the outside of the mobile terminal. The speaker emits sound from the sound outlet, which is then transmitted to the outside of the mobile terminal through the multiple sound channels; The path distance of the sound channel near the center of the sound outlet is greater than the path distance of the sound channel far from the center of the sound outlet, so that the sound waves reach the sound hole in the same time through different sound channels. The inner wall of the sound channel is a rigid rod.

2. The loudspeaker assembly according to claim 1, characterized in that, The multiple sound channels are connected to the outside of the mobile terminal at one end, which is divided into a first part and a second part. When the sound passes through the first part of the multiple sound channels, it is focused in the first region, and when it passes through the second part, it is focused in the second region.

3. The loudspeaker assembly according to claim 1, characterized in that, Each of the multiple audio channels is equipped with a plurality of isolation switches, which can be used to control the opening or closing of the multiple audio channels respectively.

4. The loudspeaker assembly according to claim 1, characterized in that, The path lengths of the multiple sound channels decrease from the center of the sound outlet outwards.

5. The loudspeaker assembly according to claim 1, characterized in that, The openings at the other end of the plurality of sound channels are oriented toward the center of the sound focusing device.

6. The loudspeaker assembly according to any one of claims 1-5, characterized in that, The sound focusing device also includes a connecting end disposed at the first end of the sound focusing device, the first end of the connecting end being open and connected to the sound outlet; The second end of the connector is connected to the plurality of sound channels.

7. The loudspeaker assembly according to claim 6, characterized in that, The sound focusing device includes: The sound maze forms multiple bends in the sound channels. One end of each bend in the sound channel is connected to the second end of the connecting end, and the other end is connected to the outside of the mobile terminal, thus forming the multiple sound channels. The sound labyrinth is made of rigid rods, or the inner wall of the bent sound channel is formed with a first reflective layer made of rigid rods.

8. The loudspeaker assembly according to claim 7, characterized in that, The second end of the connecting end is provided with multiple connecting holes; The sound focusing device includes multiple pipes, one end of each pipe is connected to a corresponding connection hole of the connection end, and the other end is connected to the outside of the mobile terminal to form the sound channel. The pipe is made of a rigid rod, or the inner wall of the pipe has a second reflective layer made of a rigid rod.

9. The loudspeaker assembly according to claim 8, characterized in that, The multiple pipes have different lengths, and / or the multiple pipes are filled with a filling material; the pipes are provided with a maze path to form a tortuous passage and prolong the sound transmission time.

10. The loudspeaker assembly according to claim 9, characterized in that, The multiple pipes are filled with a material according to a preset ratio.

11. A mobile terminal, characterized in that, Includes the speaker assembly described in any one of claims 1-10.

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