Audio module and intelligent glasses

Abstract

The embodiment of the invention provides an audio module and intelligent glasses, and relates to the technical field of intelligent glasses. The intelligent glasses comprise a shell and an audio piece. Wherein the housing is provided with at least one first sound outlet hole along the length direction of the housing, and the first sound outlet hole is used for facing the ear canal of a user. At least one second sound outlet hole is formed in the shell in the width direction of the shell, and an included angle is formed between the center line of the second sound outlet hole and the center line of the first sound outlet hole. The audio piece is arranged in the shell and comprises at least one first radiation part and at least one second radiation part. The first radiation parts are in one-to-one correspondence with the first sound outlet holes, and the first radiation parts radiate first sound waves through the first sound outlet holes. The second radiation parts are in one-to-one correspondence with the second sound outlet holes, and the second radiation parts radiate second sound waves through the second sound outlet holes. According to the audio module provided by the embodiment of the invention, at least one dipole sound field can be formed, so that the audio module has an effect of reducing sound leakage.

Description

Technical Field

[0001] This application relates to the field of smart glasses technology, and more particularly to an audio module and smart glasses. Background Technology

[0002] Smart glasses are wearable devices, typically in the form of eyeglasses. They display information on the lenses or via miniature projectors to facilitate interaction between the user and the world around them.

[0003] In related technologies, a smart glasses includes a front frame, temples, and a transducer. The temples are rotatably connected to the front frame, the transducer is disposed inside the temples, and the temples have sound holes that are directed toward the user's ear canal to achieve audio output.

[0004] However, smart glasses exhibit significant sound leakage outside the user's ear. Summary of the Invention

[0005] This application provides an audio module and smart glasses. When the audio components of the audio module radiate sound waves through the first sound outlet and the second sound outlet, at least one dipole sound field can be formed, thereby enabling the audio module to reduce sound leakage.

[0006] In a first aspect, embodiments of this application provide an audio module, including a housing and an audio component. The housing has a receiving cavity. Along the length direction of the housing, at least one first sound outlet is provided, the first sound outlet facing the user's ear canal. Along the width direction of the housing, at least one second sound outlet is provided, the centerline of the second sound outlet forming an angle with the centerline of the first sound outlet. The audio component is disposed within the receiving cavity, and the audio component includes at least one first radiating portion and at least one second radiating portion. The first radiating portion corresponds one-to-one with the first sound outlet, and the first radiating portion radiates a first sound wave through the first sound outlet. The second radiating portion corresponds one-to-one with the second sound outlet, and the second radiating portion radiates a second sound wave through the second sound outlet.

[0007] In some possible implementations, the angle between the centerline of the second sound hole and the centerline of the first sound hole includes 60° to 120°.

[0008] In some possible implementations, at least one second sound outlet is provided on both sides of the housing along the width direction of the housing.

[0009] In some possible implementations, the audio component has a first reference surface, the length and thickness directions of the housing are parallel to the first reference surface, and the first reference surface passes through the geometric center of the audio component. The second sound holes on both sides of the housing correspond one-to-one, and the corresponding second sound holes are symmetrical about the first reference surface.

[0010] In some possible implementations, the audio component has a second reference surface, the width and thickness directions of the housing are parallel to the second reference surface, and the second reference surface passes through the geometric center of the audio component. The second sound holes on both sides of the housing correspond one-to-one, and the line connecting the geometric centers of the corresponding second sound holes lies within the second reference surface, and / or, the line connecting the geometric centers of the corresponding second sound holes lies on the side of the second reference surface facing the first sound hole.

[0011] In some possible implementations, the audio component has a third reference surface, the length and width directions of the housing are parallel to the third reference surface, and the third reference surface passes through the geometric center of the audio component. A first sound outlet is located on the side of the third reference surface facing the user's ear, and a second sound outlet is located on the side of the third reference surface away from the user's ear.

[0012] In some possible implementations, along the thickness direction of the housing, the surface of the housing facing away from the user's ear has at least one third sound hole, and the center line of the third sound hole has an angle with the center line of the first sound hole.

[0013] In some possible implementations, the audio component has a second reference surface, the width and thickness directions of the housing are parallel to the second reference surface, and the second reference surface passes through the geometric center of the audio component. The centerline of the third sound hole is located within the second reference surface, and / or, the centerline of the third sound hole is located on the side of the second reference surface facing the first sound hole.

[0014] In some possible implementations, the first radiating element is a diaphragm, and the audio component includes a housing. The housing is disposed within a receiving cavity, and the housing contains a sound cavity. The first radiating element is connected to the housing and encloses the sound cavity. Along the width direction of the housing, the housing has at least one first connecting hole, and a second sound outlet communicates with the sound cavity through at least one first connecting hole. The at least one first connecting hole corresponding to the second sound outlet constitutes the second radiating element.

[0015] Secondly, embodiments of this application provide a smart glasses, including a lens body and any of the audio modules provided in the first aspect connected to the lens body.

[0016] The audio module and smart glasses provided in this application embodiment have the following features: The audio module has at least one first sound outlet, with each first radiating part of the audio component corresponding to a specific first sound outlet. The first sound outlet is positioned along the length of the outer shell towards the user's ear canal, ensuring that the first sound wave radiated by the first radiating part can be transmitted into the user's ear canal. By having at least one second sound outlet, with each second radiating part corresponding to a specific second sound outlet, at least one dipole sound field can be formed when the audio component radiates sound waves through the first and second sound outlets, thereby reducing sound leakage.

[0017] Furthermore, by setting an angle between the centerline of the second sound hole and the centerline of the first sound hole, the extension direction of the axis of the dipole sound field formed by the first and second sound holes also has an angle with the centerline of the first sound hole. This allows high-frequency sound waves radiated from the first and second sound holes to avoid the shoulders and head and radiate to the outside, ensuring that the dipole sound field can work normally and achieving an effective sound leakage prevention effect. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0019] Figure 1 A schematic diagram of the structure of smart glasses provided in an embodiment of this application;

[0020] Figure 2 Another structural schematic diagram of the smart glasses provided in the embodiments of this application;

[0021] Figure 3 for Figure 2 A diagram illustrating smart glasses worn on a user's ear;

[0022] Figure 4 This application provides a positional relationship diagram between sound leakage points at different locations outside the ear canal and the geometric center of the tympanic membrane inside the ear canal when smart glasses are worn on a user's ear;

[0023] Figure 5 This application provides an embodiment of the diagram showing another positional relationship between sound leakage points at different locations outside the ear canal and the geometric center of the tympanic membrane inside the ear canal when smart glasses are worn on a user's ear;

[0024] Figure 6 for Figure 2 A comparison diagram showing the sound pressure level at different locations outside the ear canal and at the geometric center of the eardrum when the smart glasses are worn on the user's ear.

[0025] Figure 7 for Figure 2 A comparison diagram showing the average sound pressure level at different sound leakage points outside the ear canal and the sound pressure level at the geometric center of the eardrum inside the ear canal when the smart glasses are worn on the user's ear.

[0026] Figure 8 for Figure 2 Another comparison diagram of sound pressure levels at different locations outside the ear canal and at the geometric center of the eardrum inside the ear canal when the smart glasses are worn on the user's ear.

[0027] Figure 9 for Figure 8 Side view;

[0028] Figure 10 This is a schematic diagram of the structure of an audio module provided in an embodiment of this application;

[0029] Figure 11 for Figure 10 Another comparison diagram of sound pressure levels at different locations outside the ear canal and at the geometric center of the tympanic membrane inside the ear canal when the audio module is worn on the user's ear.

[0030] Figure 12 for Figure 10 The sound pressure level at the geometric center of the eardrum inside the ear canal, the average sound pressure level at various sound leakage points outside the ear canal, and the sound module in the audio module when worn on the user's ear. Figure 2 A comparison chart showing the sound pressure level at the geometric center of the eardrum inside the ear canal and the average sound pressure level at various leakage points outside the ear canal when the smart glasses are worn on the user's ear.

[0031] Figure 13 for Figure 10 A comparison diagram showing the sound pressure level at different locations outside the ear canal and at the geometric center of the eardrum when the audio module is worn on the user's ear.

[0032] Figure 14 for Figure 13 Side view;

[0033] Figure 15 A diagram showing the positional relationship between the first reference surface, the second reference surface, and the third reference surface of the outer casing;

[0034] Figure 16 for Figure 10 Side view.

[0035] Explanation of reference numerals in the attached figures:

[0036] 10. Mirror body; 11. First sound hole; 12. Second sound hole; 20. Audio module;

[0037] 100. Outer shell; 110. Receiving cavity; 120. First sound outlet; 130. Second sound outlet; 140. Third sound outlet;

[0038] 200, Audio component; 210, First radiating part; 220, Second radiating part; 230, Third radiating part; 240, Housing; 250, Sound cavity.

[0039] To facilitate understanding of the embodiments of this application, the spline curves and arrows used in the reference numerals in the accompanying drawings are explained below: the components indicated by spline curves without arrows can be solid components, that is, components with solid structures; the components indicated by spline curves with arrows can be virtual components, that is, components without solid structures; in some cases, the components indicated by spline curves with arrows can also be assemblies with solid structures or virtual structures.

[0040] The accompanying drawings have illustrated specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to specific embodiments. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. In the description of the embodiments of this application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships (if present), are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of this application 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, and therefore should not be construed as a limitation on the embodiments of this application. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Where there is no conflict, embodiments of this application and the various features thereof can be combined with each other, all of which are within the scope of protection of this application.

[0043] The smart glasses provided in this application embodiment can be virtual reality (VR) glasses, augmented reality (AR) glasses, mixed reality (MR) glasses, and artificial intelligence (AI) glasses, etc.

[0044] Figure 1 This is a schematic diagram of the structure of smart glasses provided in an embodiment of this application.

[0045] like Figure 1 As shown, this application embodiment provides a smart glasses, including a lens body 10 and an audio module 20 connected to the lens body 10.

[0046] By connecting the audio module 20 to the lens body 10, smart glasses can integrate audio and visual functions, thus providing users with a more convenient multimedia experience. Since the audio module 20 is directly integrated into the lens body 10 of the smart glasses, users do not need to wear additional audio devices such as headphones. This design allows users to simultaneously obtain visual and audio information when using the smart glasses, thereby improving the practicality and user experience of the smart glasses.

[0047] In some embodiments, the audio module 20 may be fixedly connected to or rotatably connected to the mirror body 10.

[0048] In some examples, the audio module 20 can be fixedly connected to the mirror body 10 by means of welding, snap-fitting, screwing, etc.

[0049] In some examples, the audio module 20 can be rotatably connected to the mirror body 10 via hinges, universal joints, bearings, gear meshing, or other means.

[0050] In some embodiments, the smart glasses may include at least two audio modules 20, with at least one audio module 20 disposed on each side of the lens body 10 to achieve stereo audio output or multi-channel audio effects. Exemplarily, one or more audio modules 20 may be disposed on each side of the lens body 10.

[0051] In some embodiments, the glasses 10 may include a frame and temples, and an audio module 20 may be connected to the temples, so that the audio output is closer to the user's ear area.

[0052] In some embodiments, the mirror body 10 further includes a display module, which can be connected to the mirror frame and is used to project information, images or videos into the user's field of vision.

[0053] In some embodiments, the lens body 10 may further include a plurality of sensors, each of which may be disposed on at least one of the lens frame and the temple.

[0054] In some examples, multiple sensors may include accelerometers, gyroscopes, and magnetometers to enable head tracking, posture perception, and motion detection.

[0055] In some examples, multiple sensors may also include a distance sensor, which can be used to measure distance and depth information.

[0056] In some embodiments, the lens body 10 may further include an interaction module, which may be disposed on at least one of the frame and temples, allowing the user to interact with the smart glasses. Exemplarily, the interaction module may include a touchpad, buttons, a voice control module, a gesture recognition module, an eye-tracking module, etc.

[0057] In some embodiments, the mirror body 10 may also include a control module for processing data, running applications, and controlling other electronic devices of the mirror body 10 (such as sensors).

[0058] In some embodiments, the smart glasses may also include a power module that can provide power to the audio module 20 and other electronic components (such as sensors) of the lens body 10.

[0059] Currently, smart glasses, as an emerging wearable device, typically take the form of eyeglasses. By displaying information on the lenses or projecting images using a micro-projector, they provide users with an augmented reality experience, enabling users to acquire digital information while observing their surroundings, thereby achieving intelligent interaction with the world around them.

[0060] In related technologies, a smart glasses includes a front frame, temples, and a transducer. The temples are rotatably connected to the front frame, the transducer is disposed inside the temples, and the temples have sound holes that are directed toward the user's ear canal to achieve audio output.

[0061] However, when the transducer radiates sound waves into the user's ear canal through the sound outlet, it also radiates sound waves out of the user's ear, resulting in a relatively serious sound leakage phenomenon. This sound leakage not only affects the user's listening experience and reduces audio privacy, but may also cause noise pollution to the surrounding environment and affect the normal activities of others.

[0062] Figure 2 This is another structural schematic diagram of the smart glasses provided in an embodiment of this application. Figure 3 for Figure 2 This is a schematic diagram of smart glasses worn on a user's ear. In the diagram, the X-axis is defined as the length direction of the audio module 20.

[0063] This application provides a smart glasses embodiment, including a lens body 10 and an audio module 20. Wherein, as... Figure 3 As shown, the earpiece 10 is worn on the user's ear, and the audio module 20 is located inside the earpiece 10. Figure 2 As shown, along the length direction of the audio module 20 (e.g.) Figure 2 (in the X direction), the lens body 10 has a first sound hole 11 and a second sound hole 12 arranged opposite to each other. The first sound hole 11 is used to face the user's ear canal. The audio module 20 radiates a first sound wave towards the outside of the lens body 10 through the first sound hole 11 and a second sound wave towards the outside of the lens body 10 through the second sound hole 12.

[0064] When the smart glasses are worn on the user's head, the audio module 20 radiates a first sound wave toward the user's ear canal through the first sound hole 11 along the length of the audio module 20, so that a strong sound pressure can be formed near the user's ear canal.

[0065] Meanwhile, along the length of the audio module 20, the first sound wave radiated by the audio module 20 is out of phase with the second sound wave, and the resulting sound fields couple into a dipole sound field, with the axis of the dipole sound field parallel to the length of the audio module 20. In the direction perpendicular to the axis of the dipole sound field, for example, in the direction perpendicular to the user's head, i.e., away from the user's head, the sound pressure of the sound waves radiated by the audio module 20 is weaker due to the cancellation effect of the sound fields, thereby reducing sound leakage in the smart glasses.

[0066] Figure 4 This application provides a positional relationship diagram between sound leakage points at different locations outside the ear canal and the geometric center of the tympanic membrane inside the ear canal when smart glasses are worn on a user's ear; Figure 5 This application provides an embodiment of the diagram showing another positional relationship between sound leakage points at different locations outside the ear canal and the geometric center of the tympanic membrane inside the ear canal when smart glasses are worn on a user's ear. In the diagram, point O is defined as the geometric center of the tympanic membrane inside the ear canal, and points A, B1, B2, B3, B4, B5, and C are defined as sound leakage points at different locations outside the ear canal.

[0067] In some embodiments, such as Figure 4 and Figure 5 As shown, each sound leakage point (e.g.) Figure 4 Points B1, B2, B3, B4, and B5 in the diagram. Figure 5 Points A, B3, and C in the diagram) and the geometric center of the tympanic membrane (e.g., points A, B3, and C) Figure 4 or Figure 5 The distances from point O in the diagram are the same. For example, the distance between each sound leakage point and the geometric center of the tympanic membrane is 200mm to 600mm.

[0068] In some embodiments, such as Figure 4As shown, points B1, B2, B3, B4, and B5 are arranged around point O in sequence, and the angles between OB1 and OB2, OB2 and OB3, OB3 and OB4, and OB4 and OB5 are all 45°.

[0069] In some embodiments, such as Figure 5 As shown, points A, B3, and C are arranged around point O in sequence, and the angles between OC and OB3, and between OB3 and OA, are all 45°.

[0070] In this embodiment of the application, in order to test the effect of the smart glasses on reducing sound leakage, the tester measured the sound pressure level at the geometric center O of the tympanic membrane, and measured the sound pressure level at at least two sound leakage points outside the ear canal, such as points A, B1, B2, B3, B4, B5 and C.

[0071] Figure 6 for Figure 2 This is a comparison diagram showing the sound pressure level at different locations outside the ear canal and at the geometric center of the eardrum when the smart glasses are worn on the user's ear.

[0072] Figure 7 for Figure 2 A comparison diagram showing the average sound pressure level at different points of sound leakage outside the ear canal and the sound pressure level at the geometric center of the eardrum inside the ear canal when the smart glasses are worn on the user's ear.

[0073] like Figure 6 As shown, the audio module 20 radiates sound waves of different frequencies. At each frequency, the geometric center of the tympanic membrane inside the ear canal (e.g., Figure 6 The sound pressure level of the traditional design (inner ear wire) is higher than that of various sound leakage points outside the ear canal (e.g., Figure 6 The sound pressure levels of the traditional design-A line, traditional design-B1 line, traditional design-B2 line, traditional design-B3 line, traditional design-B4 line, traditional design-B5 line, and traditional design-C line. For example... Figure 7 As shown, at various frequencies, the geometric center of the tympanic membrane within the ear canal (e.g., Figure 7 The sound pressure level of the traditional design (inner ear wire) is higher than the average sound pressure level of each sound leakage point outside the ear canal (e.g., Figure 7 Traditional design in China - average line outside the ear.

[0074] Figure 8 for Figure 2 Another comparison diagram showing the sound pressure level at different locations outside the ear canal and at the geometric center of the eardrum when the smart glasses are worn on the user's ear. Figure 9 for Figure 8 Side view.

[0075] like Figure 7 and Figure 8 As shown, brighter / warmer colors (such as yellow and red) indicate higher sound pressure levels; darker / cooler colors (such as blue and green) indicate lower sound pressure levels. Therefore, it can be seen that... Figure 8 As shown, in the low-frequency range (below 20Hz, 100Hz, and 500Hz), a relatively obvious dipole sound field can be seen near the user's ears. When the sound waves are transmitted to the user's head and shoulders, the strong diffraction ability of the sound waves allows the dipole sound field to be evenly distributed, so the effect of the dipole sound field in reducing sound leakage is basically unaffected.

[0076] In the mid-to-high frequency range (below 1000Hz, 2000Hz, and 4000Hz), such as Figure 9 As shown, the dipole sound field distribution is gradually disrupted as the frequency increases. Specifically, due to the weak diffraction ability of mid-to-high frequency sound waves, when the sound waves reach the user's head and shoulders, they will scatter, thus affecting the distribution of the dipole sound field. This results in an uneven distribution of the dipole sound field's electric field, which in turn leads to a poor effect of the dipole sound field in reducing sound leakage.

[0077] In summary, when the aforementioned smart glasses operate in the mid-to-high frequency range, the dipole sound field distribution generated by the audio module 20 is uneven due to the influence of the head and shoulders, resulting in a poor sound leakage reduction effect of the smart glasses.

[0078] Figure 10 This is a schematic diagram of an audio module 20 provided in an embodiment of this application. In the figure, line L is defined as the center line of the first sound outlet 120, line M is defined as the center line of the second sound outlet 130, line N is defined as the center line of the third sound outlet 140, the X-axis is defined as the length direction of the outer shell 100, the Y-axis is defined as the width direction of the outer shell 100, the Z-axis is defined as the thickness direction of the outer shell 100, and α is defined as the angle between the center line of the second sound outlet 130 and the center line of the first sound outlet 120.

[0079] In view of this, such as Figure 10 As shown, this application embodiment provides an audio module 20, including a housing 100 and an audio component 200. The housing 100 can be connected to the lens 10 of smart glasses, and has a receiving cavity 110 inside. Along the length direction of the housing 100, the housing 100 has at least one first sound outlet 120, which is directed toward the user's ear canal. Along the width direction of the housing 100, the housing 100 has at least one second sound outlet 130, the centerline of which (e.g.) Figure 10 The M line in the middle) and the center line of the first sound hole 120 (e.g.) Figure 10 There is an angle between the L lines (e.g.) Figure 10(α angle in the text). The audio component 200 is disposed within the receiving cavity 110, and the audio component 200 includes at least one first radiating portion 210 and at least one second radiating portion 220. The first radiating portion 210 corresponds one-to-one with the first sound outlet 120, and the first radiating portion 210 radiates a first sound wave through the first sound outlet 120. The second radiating portion 220 corresponds one-to-one with the second sound outlet 130, and the second radiating portion 220 radiates a second sound wave through the second sound outlet 130.

[0080] By providing at least one first sound outlet 120, and with each first radiating part 210 in the audio module 200 corresponding to one of the first sound outlets 120, and with the first sound outlet 120 positioned along the length of the outer casing 100 towards the user's ear canal, it can be ensured that the first sound wave radiated by the first radiating part 210 can be transmitted into the user's ear canal. By providing at least one second sound outlet 130, and with each second radiating part 220 corresponding to one of the second sound outlets 130, when the audio module 200 radiates sound waves through the first sound outlet 120 and the second sound outlet 130, at least one dipole sound field can be formed, thereby enabling the audio module 20 to reduce sound leakage.

[0081] Figure 11 for Figure 10 Another comparison diagram of the sound pressure level at different locations outside the ear canal and the geometric center of the eardrum inside the ear canal when the audio module 20 is worn on the user's ear.

[0082] Figure 12 for Figure 10 The audio module 20, when worn on the user's ear, measures the sound pressure level at the geometric center of the tympanic membrane inside the ear canal, the average sound pressure level at various leakage points outside the ear canal, and... Figure 2 A comparison diagram showing the sound pressure level at the geometric center of the eardrum inside the ear canal and the average sound pressure level at various leakage points outside the ear canal when the smart glasses are worn on the user's ear.

[0083] like Figure 11 As shown, the audio module 20 radiates sound waves of different frequencies. At each frequency, the geometric center of the tympanic membrane inside the ear canal (e.g., Figure 11 The sound pressure level of the newly designed #1-in-ear wire is higher than the sound pressure level at each sound leakage point outside the ear canal (e.g., Figure 11 The new design lines are: #1-A, #1-B1, #1-B2, #1-B3, #1-B4, #1-B5, and #1-C.

[0084] like Figure 12 As shown, at various frequencies, Figure 10 The geometric center of the tympanic membrane inside the ear canal when the audio module 20 is worn on the user's ear (e.g., Figure 12The sound pressure level of the new design #1 (in-ear wire) and Figure 2 The geometric center of the eardrum in the ear canal when the smart glasses are worn on the user's ear (e.g. Figure 12 The sound pressure level difference in traditional designs (intra-ear wires) is relatively small. Figure 10 When the audio module 20 is worn on the user's ear, it detects sound leakage at different points outside the ear canal (e.g., Figure 12 The average sound pressure level of the new design #1 (external average line) is generally lower than that of the average sound pressure level in the low, mid, and high frequency range (especially in the 20Hz~5000Hz range). Figure 2 When smart glasses are worn on a user's ear, sound leakage occurs at different points outside the ear canal (e.g., Figure 12 The average sound pressure level in the traditional design of the ear (the average line outside the ear).

[0085] Figure 13 for Figure 10 A comparison diagram showing the sound pressure level at different locations outside the ear canal and at the geometric center of the eardrum when the audio module 20 is worn on the user's ear. Figure 14 for Figure 13 Side view.

[0086] like Figure 13 and Figure 14 As shown, brighter / warmer colors (such as yellow and red) indicate higher sound pressure levels; darker / cooler colors (such as blue and green) indicate lower sound pressure levels. This demonstrates that in the low-frequency range (below 20Hz, 100Hz, and 500Hz), a relatively distinct dipole sound field is visible near the user's ears. When sound waves reach the user's head and shoulders, the strong diffraction ability of the sound waves allows the dipole sound field to be evenly distributed, thus ensuring that the effect of the dipole sound field in reducing sound leakage is largely unaffected.

[0087] In the mid-to-high frequency range (below 1000Hz, 2000Hz, and 4000Hz), as the frequency increases, the distribution of the dipole sound field becomes more uniform, thus the effect of the dipole sound field in reducing sound leakage is basically unaffected.

[0088] In summary, when the audio module 20 operates in the mid-to-high frequency range, the dipole sound field generated by the audio module 20 is less affected by the head and shoulders, and its distribution is relatively uniform. The dipole sound field can work normally and can achieve an effective sound leakage prevention effect.

[0089] Specifically, since the user's shoulders and part of their head are located along the extension direction of the centerline of the second sound outlet 130, if the axis of the dipole sound field extends collinearly with the centerline of the second sound outlet 130, the mid-to-high frequency sound waves radiated from the first and second sound outlets 120 and 130 will scatter when they encounter the shoulders and head, thereby reducing the sound leakage prevention effect of the dipole sound field. However, this embodiment sets an angle between the centerline of the second sound outlet 130 and the centerline of the first sound outlet 120, so that the axis of the dipole sound field formed by the first and second sound outlets 120 also extends at an angle with the centerline of the first sound outlet 120. This allows the high-frequency sound waves radiated from the first and second sound outlets 120 to avoid the shoulders and head and radiate outwards, ensuring the dipole sound field functions properly and achieving an effective sound leakage prevention effect.

[0090] In some embodiments, the housing 100 may be a plastic part or the like.

[0091] In some embodiments, the shape of the receiving cavity 110 can be a regular shape such as a circle, ellipse, or square, or it can be an irregular shape.

[0092] In some embodiments, the first sound hole 120 and the second sound hole 130 can be in the shape of a regular shape such as a circle, an ellipse, or a square, or they can be in an irregular shape.

[0093] In some embodiments, the audio element 200 may be a transducer, such as a moving coil, moving iron, or piezoelectric transducer.

[0094] In some embodiments, the audio component 200 may also be called a speaker.

[0095] In some possible implementations, such as Figure 10 As shown, the center line of the second sound hole 130 (e.g.) Figure 10 The M line in the middle) and the center line of the first sound hole 120 (e.g.) Figure 10 The angle between the L-line and the line in the middle (e.g.) Figure 10 The angle α in the figure includes 60° to 120°. For example, the included angle can be 60°, 90° or 120°, etc.

[0096] When the angle is less than 60°, most of the phase of the second sound wave radiated by the audio component 200 through the second sound outlet 130 is close to the phase of the first sound wave radiated by the audio component 200 through the first sound outlet 120, with only a small portion being out of phase. Therefore, by setting the angle between the centerline of the second sound outlet 130 and the centerline of the first sound outlet 120 to be greater than or equal to 60°, the dipole sound field formed by the first sound outlet 120 and the second sound outlet 130 effectively reduces the sound leakage effect of the audio module 20.

[0097] When the angle is greater than 120°, the user's shoulders and part of their head are still located along the extension direction of the axis of the dipole sound field formed by the first sound outlet 120 and the second sound outlet 130, which results in poor sound leakage prevention of the dipole sound field. Therefore, by setting the angle between the center line of the second sound outlet 130 and the center line of the first sound outlet 120 to be less than or equal to 120°, the dipole sound field formed by the first sound outlet 120 and the second sound outlet 130 effectively reduces the sound leakage effect of the audio module 20.

[0098] In some possible implementations, such as Figure 10 As shown, at least one second sound outlet hole 130 is provided on both sides of the housing 100 along the width direction of the housing 100.

[0099] By providing at least one second sound outlet 130 on each of the two side surfaces of the housing 100 along its width, sound waves can radiate in different spatial directions. Since the sound waves propagate outwards simultaneously from both sides of the housing 100, the first sound outlet 120 and one of the second sound outlets 130 on one side can form a dipole sound field, and simultaneously, the first sound outlet 120 and the other of the second sound outlets 130 on the other side can also form another dipole sound field, thereby establishing multiple interacting dipole sound fields in different spatial regions around the audio module 20. These multiple dipole sound fields superimpose in space, more effectively canceling outward leakage sound wave energy. Therefore, compared to providing only one second sound outlet 130, this embodiment can improve the sound leakage reduction effect of the audio module 20.

[0100] In some embodiments, the number of second sound outlet holes 130 on both sides of the housing 100 may be the same or different. For example, one second sound outlet hole 130 may be provided on the left side surface, and two second sound outlet holes 130 may be provided on the right side surface.

[0101] In some embodiments, the shapes of the second sound outlet holes 130 on both sides of the housing 100 may be the same or different. For example, the shapes of the second sound outlet holes 130 on both sides can be square, or the shape of the second sound outlet hole 130 on one side is circular and the shape of the second sound outlet hole 130 on the other side is square.

[0102] Figure 15 This diagram shows the positional relationship between the first reference surface, the second reference surface, and the third reference surface of the housing 100. In the diagram, point E is defined as the geometric center of the audio component 200, surface I is defined as the first reference surface, surface II as the second reference surface, and surface III as the third reference surface.

[0103] like Figure 15As shown in the embodiment of this application, the audio component 200 has a first reference surface, the length direction and the thickness direction of the housing 100 are both parallel to the first reference surface, and the first reference surface passes through the geometric center of the audio component 200.

[0104] In some possible implementations, such as Figure 15 As shown, the second sound outlets 130 on both sides of the housing 100 correspond one-to-one, and the corresponding second sound outlets 130 are about the first reference surface (e.g., Figure 15 It is symmetrical about plane I.

[0105] The second sound outlets 130 on both sides of the outer shell 100 correspond one-to-one, and the corresponding second sound outlets 130 are symmetrically arranged about the first reference surface. This symmetrical arrangement allows the sound waves radiated from the second sound outlets 130 on both sides to form a symmetrical sound field distribution in space. Due to the symmetrical arrangement, the sound waves radiated from the second sound outlets 130 on both sides have the same amplitude and phase characteristics, thus forming a more uniform and stable sound wave radiation pattern in space. Therefore, the dipole sound field formed by the first sound outlet 120 and the symmetrically arranged second sound outlets 130 has more standard geometric and acoustic characteristics, with a more stable axial direction and a more defined directivity. This arrangement further enhances the effect of the dipole sound field in suppressing sound leakage, thereby more effectively reducing sound leakage outside the user's ear.

[0106] like Figure 15 As shown in the embodiment of this application, the audio component 200 has a second reference surface, the width direction and the thickness direction of the housing 100 are both parallel to the second reference surface, and the second reference surface passes through the geometric center of the audio component 200.

[0107] In some possible implementations, such as Figure 15 As shown, the second sound holes 130 on both sides of the outer casing 100 correspond one-to-one, and the line connecting the geometric centers of the corresponding second sound holes 130 is located on the second reference plane (e.g., Figure 15 Within the second reference surface (II), and / or, the line connecting the geometric centers of the corresponding second sound hole 130 is located on the side of the second reference surface facing the first sound hole 120.

[0108] Since the second reference surface passes through the geometric center of the audio component 200, when the line connecting the geometric centers of the corresponding second sound outlet 130 is located within the second reference surface, the center line of the second sound outlet 130 also passes through the geometric center of the audio component 200. At this time, the second sound outlet 130 is close to the sound source of the audio component 200 (e.g., the first radiating part 210), which makes the sound wave energy radiated by the audio component 200 from the second sound outlet 130 relatively large. This makes the dipole sound field formed by the first sound outlet 120 and the second sound outlet 130 relatively strong, which can effectively suppress sound leakage outside the user's ear.

[0109] When the line connecting the geometric centers of the corresponding second sound outlet 130 is located on the side of the second reference surface facing the first sound outlet 120, the second sound outlet 130 is closer to the sound source, which makes the sound wave energy radiated by the audio device 200 from the second sound outlet 130 greater, thereby making the dipole sound field formed by the first sound outlet 120 and the second sound outlet 130 stronger, which can further improve the effect of suppressing sound leakage outside the user's ear.

[0110] In some embodiments, the number of second sound holes 130 on both sides of the housing 100 can be one, two, or more pairs, and the connection of the assembly centers of each pair of second sound holes 130 can be located at the same position or at different positions.

[0111] like Figure 15 As shown in the embodiment of this application, the audio component 200 has a third reference surface, the length direction and the width direction of the housing 100 are both parallel to the third reference surface, and the third reference surface passes through the geometric center of the audio component 200.

[0112] In some possible implementations, such as Figure 15 As shown, the first sound outlet 120 is located on the third reference plane (e.g., Figure 15 The third reference surface (the third reference surface) faces the user's ear, while the second sound outlet 130 is located on the side of the third reference surface away from the user's ear.

[0113] Because the first sound outlet 120 is located on the side of the third reference surface facing the user's ear, it is relatively close to the user's ear. Therefore, the sound pressure loss of the first sound wave radiated from the first sound outlet 120 is small when it propagates to the user's ear, resulting in a higher sound pressure level and ensuring a good listening experience. Simultaneously, because the second sound outlet 130 is located on the side of the third reference surface away from the user's ear, it is relatively far from the user's ear. Therefore, the second sound wave radiated from the second sound outlet 130 effectively reduces the scattering effect of the user's head (including ears) on the sound wave during propagation, thereby reducing interference and distortion along the propagation path. This configuration ensures that the user can clearly receive the audio signal and reduces the scattering effect of the head, thus improving the sound leakage prevention effect of the dipole sound field formed by the first sound outlet 120 and the second sound outlet 130.

[0114] In some possible implementations, such as Figure 10 As shown, along the thickness direction of the housing 100, the surface of the housing 100 facing away from the user's ear has at least one third sound outlet 140, and the center line of the third sound outlet 140 (e.g. Figure 10 The N line in the middle) and the center line of the first sound hole 120 (e.g.) Figure 10 There is an angle between the L-line and the line in the middle.

[0115] By providing a third sound outlet 140 along the thickness of the outer casing 100, the audio module 20 can radiate sound waves in more directions in three-dimensional space, thereby forming multiple dipole sound fields in different spatial orientations. Since there is an angle between the third sound outlet 140 and the first sound outlet 120, the axis of the dipole sound field formed by them does not coincide with the centerline of the first sound outlet 120. This avoids scattering of sound waves by the user's shoulders and head during propagation, ensuring the normal operation of the dipole sound field.

[0116] In some embodiments, the number of third sound holes 140 may be one or more.

[0117] In some embodiments, the angle between the center line of the third sound hole 140 and the center line of the first sound hole 120 may be 60° to 120°.

[0118] In some embodiments, the third sound hole 140 may be located at different positions on the surface of the housing 100 away from the user's ear, including but not limited to the central region, edge region or corner region of the housing 100.

[0119] In some embodiments, the shape of the third sound hole 140 can be a regular shape such as a circle, an ellipse, or a square, or it can be an irregular shape.

[0120] In some possible implementations, such as Figure 10 As shown, along the thickness direction of the outer casing 100, the audio component 200 has at least one third radiating portion 230, and a third sound outlet 140 corresponds one-to-one with the third radiating portion 230. In this way, the third radiating portion 230 of the audio component 200 can radiate a third sound wave through the third sound outlet 140.

[0121] In some possible implementations, such as Figure 15 As shown, the center line of the third sound hole 140 (e.g.) Figure 15 The N-line in the middle is located on the second reference plane (e.g., Figure 15 Within the second reference surface (II), and / or, the center line of the third sound hole 140 is located on the side of the second reference surface facing the first sound hole 120.

[0122] Since the second reference surface passes through the geometric center of the audio component 200, when the center line of the third sound outlet 140 is located within the second reference surface, the center line of the third sound outlet 140 also passes through the geometric center of the audio component 200. At this time, the third sound outlet 140 is close to the sound source of the audio component 200 (e.g., the first radiating part 210), which makes the sound wave energy radiated by the audio component 200 from the third sound outlet 140 relatively large. This makes the dipole sound field formed by the first sound outlet 120 and the third sound outlet 140 relatively strong, which can effectively suppress sound leakage outside the user's ear.

[0123] When the center line of the third sound hole 140 is located on the side of the second reference surface facing the first sound hole 120, the third sound hole 140 is closer to the sound source, which makes the sound wave energy radiated by the audio device 200 from the third sound hole 140 greater, thereby making the dipole sound field formed by the first sound hole 120 and the third sound hole 140 stronger, which can further improve the effect of suppressing sound leakage outside the user's ear.

[0124] Figure 16 for Figure 10 Side view.

[0125] In some possible implementations, the first radiating part 210 is a diaphragm. For example... Figure 16 As shown, the audio component 200 may include a housing 240. The housing 240 is disposed within the receiving cavity 110 and has a sound cavity 250. A first radiating portion 210 is connected to the housing 240 and encloses the sound cavity 250. Along the width direction of the outer casing 100, the housing 240 has at least one first connecting hole, and a second sound outlet 130 communicates with the sound cavity 250 through at least one first connecting hole. The at least one first connecting hole corresponding to the second sound outlet 130 constitutes a second radiating portion 220.

[0126] The housing 240 is disposed within the receiving cavity 110 and has a sound cavity 250, which provides a good acoustic environment for the generation and propagation of sound waves. The first radiating part 210 is a diaphragm, and the first radiating part 210 is connected to the housing 240 and seals the sound cavity 250. Thus, the diaphragm can generate stable sound wave vibrations within the sound cavity 250 and radiate first sound waves towards the user's ear canal through the first sound outlet 120, and can also radiate sound waves in a square pattern away from the first sound outlet 120.

[0127] Along the width direction of the outer shell 100, at least one first connecting hole is provided on the shell 240, so that the second sound outlet 130 can be connected to the sound cavity 250 through the first connecting hole, thereby allowing the sound waves in the sound cavity 250 to be conducted to the second sound outlet 130 through the first connecting hole. At this time, at least one first connecting hole corresponding to the second sound outlet 130 constitutes a second radiating part 220, thereby realizing multi-directional radiation of sound waves.

[0128] In some embodiments, the housing 240 may be a plastic part or the like.

[0129] In some embodiments, the diaphragm may be a moving coil diaphragm, an electrostatic diaphragm, or a piezoelectric diaphragm, etc.

[0130] In some embodiments, the number of first connecting holes can be one or more, and when multiple first connecting holes are provided, the first connecting holes can be arranged in an array.

[0131] In some embodiments, the shape of the first connecting hole can be a regular shape such as a circle, ellipse, or square, or it can be an irregular shape.

[0132] In some embodiments, the shape of the acoustic cavity 250 can be a regular shape such as a cylinder or a cuboid, or it can be an irregular shape.

[0133] In some possible implementations, the housing 240 may also have at least one second connecting hole along the thickness direction of the housing 100, and the third sound outlet 140 is connected to the sound cavity 250 through at least one second connecting hole. At least one second connecting hole corresponding to the third sound outlet 140 may constitute the third radiating part 230.

[0134] With this configuration, the third sound outlet 140 can be connected to the sound cavity 250 through the second connecting hole, so that the sound waves in the sound cavity 250 can be transmitted to the third sound outlet 140 through the second connecting hole, thereby realizing the multi-directional radiation of sound waves.

[0135] It should be understood that the embodiments of this application are 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 application is limited only by the appended claims.

Claims

1. An audio module, characterized by, The application relates to an earphone, which comprises the following parts: a shell (100) with a containing cavity (110) in the shell (100); at least one first sound outlet hole (120) is arranged on the shell (100) along the length direction of the shell (100), and the first sound outlet hole (120) is used for directing sound waves to the ear canal of a user; at least one second sound outlet hole (130) is arranged on the shell (100) along the width direction of the shell (100), and the center line of the second sound outlet hole (130) forms an angle with the center line of the first sound outlet hole (120); an audio part (200) arranged in the containing cavity (110), wherein the audio part (200) comprises at least one first radiation part (210) and at least one second radiation part (220); the first radiation part (210) corresponds to the first sound outlet hole (120) one by one, and the first radiation part (210) radiates first sound waves through the first sound outlet hole (120); the second radiation part (220) corresponds to the second sound outlet hole (130) one by one, and the second radiation part (220) radiates second sound waves through the second sound outlet hole (130).

2. The audio module of claim 1, wherein, The angle between the center line of the second sound outlet hole (130) and the center line of the first sound outlet hole (120) is 60-120 degrees.

3. The audio module of claim 1, wherein, At least one second sound outlet hole (130) is arranged on the two side surfaces of the shell (100) along the width direction of the shell (100).

4. The audio module of claim 3, wherein, The audio part (200) has a first reference surface, the length direction of the shell (100) and the thickness direction of the shell (100) are parallel to the first reference surface, and the first reference surface passes through the geometric center of the audio part (200); The second sound outlet holes (130) on the two side surfaces of the shell (100) correspond to each other, and the corresponding second sound outlet holes (130) are symmetrical about the first reference surface.

5. The audio module of claim 3, wherein, The audio part (200) has a second reference surface, the width direction of the shell (100) and the thickness direction of the shell (100) are parallel to the second reference surface, and the second reference surface passes through the geometric center of the audio part (200); The second sound outlet holes (130) on the two side surfaces of the shell (100) correspond to each other, and the connecting line of the geometric centers of the corresponding second sound outlet holes (130) is located in the second reference surface, and / or the connecting line of the geometric centers of the corresponding second sound outlet holes (130) is located on one side of the second reference surface which is directed to the first sound outlet hole (120).

6. The audio module of claim 1, wherein, The audio part (200) has a third reference surface, the length direction of the shell (100) and the width direction of the shell (100) are parallel to the third reference surface, and the third reference surface passes through the geometric center of the audio part (200); The first sound outlet hole (120) is located on one side of the third reference surface which is directed to the ear of the user, and the second sound outlet hole (130) is located on one side of the third reference surface which is away from the ear of the user.

7. The audio module of claim 1, wherein, The shell (100) has at least one third sound outlet hole (140) on the surface thereof facing away from the user's ear along the thickness direction of the shell (100), and the center line of the third sound outlet hole (140) forms an included angle with the center line of the first sound outlet hole (120).

8. The audio module of claim 7, wherein, The audio component (200) has a second reference plane, the width direction of the shell (100) and the thickness direction of the shell (100) are both parallel to the second reference plane, and the second reference plane passes through the geometric center of the audio component (200). The center line of the third sound outlet hole (140) is located in the second reference plane, and / or the center line of the third sound outlet hole (140) is located on the side of the second reference plane facing the first sound outlet hole (120).

9. The audio module of any one of claims 1-8, wherein, The first radiating part (210) is a diaphragm. The audio component (200) comprises a shell (240) arranged in the accommodating cavity (110), and the shell (240) has an acoustic cavity (250) therein; the first radiating part (210) is connected with the shell (240), and the first radiating part (210) encloses the acoustic cavity (250). Along the width direction of the shell (100), the shell (240) has at least one first communication hole, and the second sound outlet hole (130) communicates with the acoustic cavity (250) through the at least one first communication hole; at least one first communication hole corresponding to the second sound outlet hole (130) constitutes the second radiating part (220).

10. An intelligent eyewear, characterized in that, The mirror body (10) and the audio module (20) as claimed in any one of claims 1-9 connected with the mirror body (10).

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