CN112087681A - Pickup device and cavity wall component for same - Google Patents
Pickup device and cavity wall component for same Download PDFInfo
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- CN112087681A CN112087681A CN201910505465.5A CN201910505465A CN112087681A CN 112087681 A CN112087681 A CN 112087681A CN 201910505465 A CN201910505465 A CN 201910505465A CN 112087681 A CN112087681 A CN 112087681A
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- 238000010030 laminating Methods 0.000 claims description 2
- 238000002955 isolation Methods 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 8
- 238000009413 insulation Methods 0.000 description 5
- 230000002708 enhancing effect Effects 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/08—Mouthpieces; Microphones; Attachments therefor
- H04R1/083—Special constructions of mouthpieces
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
Abstract
The invention discloses a pickup device and a cavity wall component used for the pickup device, comprising: the surface of the shell is provided with a sound pickup hole; a microphone disposed inside the housing; and the tunnel sound cavity is formed inside the shell and is isolated between the sound pickup hole and the microphone, the sound pickup hole and the microphone are both communicated with the tunnel sound cavity, and sound waves entering the shell through the sound pickup hole are collected by the microphone through the tunnel sound cavity. An object of the present invention is to provide a sound pickup apparatus and a wall member for the same that increase the distance between a sound pickup hole and a microphone by providing a tunnel sound chamber between the sound pickup hole and the microphone to achieve the effect of electrostatic isolation and also compensate for the loss of sound intensity due to the distance by the oscillating action of sound waves inside the tunnel sound chamber.
Description
Technical Field
The invention relates to the technical field of sound pickup equipment, in particular to sound pickup equipment and a cavity wall component for the sound pickup equipment.
Background
In the recording device, electrostatic interference is easily generated due to the close distance between the recording hole of the microphone and the microphone, which may cause damage to the microphone or internal circuits, thus affecting the use effect. The main mode of solving the problem of recording hole electrostatic interference at present is hardware circuit protection and structure retraction design.
For some chips with weak antistatic capability, when the product is thin and the structure is retracted and cannot meet the electrostatic insulation requirement, the problem of electrostatic interference cannot be solved by only using hardware circuit protection; and although the structure retraction can better solve the problem of electrostatic interference, when the retraction distance of the recording hole structure is too large, the loudness of collected sound is greatly influenced.
Fig. 1 shows a cross-sectional view of a conventional microphone structure of a retraction type, in which the electrostatic insulation strength is determined by the distance from a microphone sound pickup hole 1 on the surface to an internal microphone 2, which is limited by the thickness of the product. In some ultrathin products, the distance from a microphone pickup hole to a microphone is too small to meet the requirements of conventional static test; when the vertical distance from the microphone pickup hole to the microphone is too large, the pickup performance of the microphone is affected, and the loudness of the microphone is lowered.
Fig. 2 shows another prior art microphone structure, in which a grounded aluminum foil 5 is used for isolation between the housing 3 and the microphone 4, and serves as a shield for electrostatic protection of the microphone. However, the application scenario of this method is limited, and it must be applied to the case where an on-board microphone or a grounding metal exists around the microphone to ensure the grounding of the aluminum foil, thereby playing a role in electrostatic isolation.
Disclosure of Invention
In view of the above, it is an object of the present invention to provide a sound pickup apparatus and a wall member for the same that increase the distance between a sound pickup hole and a microphone by providing a tunnel sound chamber between the sound pickup hole and the microphone to achieve an effect of electrostatic isolation and also compensate for a loss of sound intensity due to the distance by an oscillating action of sound waves inside the tunnel sound chamber.
One embodiment of the present invention provides a sound pickup apparatus including:
the surface of the shell is provided with a sound pickup hole;
a microphone disposed inside the housing; and
the tunnel sound cavity is formed inside the shell and is isolated between the sound pickup hole and the microphone, the sound pickup hole and the microphone are communicated with the tunnel sound cavity, and sound waves entering the shell through the sound pickup hole are collected by the microphone through the tunnel sound cavity.
Preferably, the height direction of the tunnel sound cavity is a direction perpendicular to the surface,
the sound pickup hole and the microphone are respectively positioned on the outer sides of the upper surface and the lower surface of the tunnel sound cavity, and the vertical distance between the sound pickup hole and the microphone is the height.
Preferably, the pick-up hole and the microphone have a horizontal distance therebetween in a horizontal direction parallel to the surface.
Preferably, the horizontal distance is greater than the vertical distance.
Preferably, the upper surface of the tunnel sound cavity is hollowed, and the top of the tunnel sound cavity is directly attached to the surface;
the lower surface of the tunnel sound cavity is provided with a microphone hole, and the position of the microphone corresponds to the position of the microphone hole.
Preferably, the tunnel sound cavity has a pair of opposing first side walls extending in the height direction,
the pick-up hole and the microphone hole are respectively adjacent to one of the first side walls.
Preferably, the exterior of the tunnel sound cavity further comprises a microphone base located outside the lower surface of the tunnel sound cavity to fix the microphone to a position corresponding to the microphone hole.
Another embodiment of the present invention also provides a cavity wall member for forming a tunnel sound cavity of a sound pickup apparatus as described above, including:
a lower surface having a microphone aperture thereon; and
the side walls vertically extend from the edge of the lower surface, and the side walls mutually enclose to form a closed ring shape;
the pickup equipment comprises a shell, wherein the surface of the shell is provided with a pickup hole,
the top of lateral wall laminating the inboard of surface, the sound pick-up hole is located inside the closed ring shape, lateral wall, lower surface and surface enclose and close and form the cavity, and the sound wave passes through the pickup hole and gets into this cavity, via this cavity is left to the microphone hole.
Preferably, further comprising:
a microphone base located outside of the lower surface enclosing the microphone aperture therein.
Preferably, the side walls include at least one pair of opposing first side walls, the pick-up hole and the microphone hole each being adjacent one of the first side walls.
As can be seen from the above technical solutions, the sound pickup apparatus of the present invention has the tunnel sound cavity disposed between the sound pickup hole and the microphone, and the purpose of increasing the distance between the sound pickup hole and the microphone is achieved by the three-dimensional cavity structure, and due to the cavity structure of the tunnel sound cavity, the isolation between the sound pickup hole and the microphone is not only embodied in the distance along the vertical direction perpendicular to the surface of the housing, but also in the distance along the horizontal direction parallel to the surface of the housing, so that compared with the prior art in which the isolation is achieved only by increasing the linear distance between the sound pickup hole and the microphone (i.e., the vertical direction described above), the sound pickup apparatus of the present invention does not increase the thickness of the sound pickup apparatus, i.e., the linear distance between the sound pickup hole and the microphone, to a great extent.
Further, the sound wave entering the inside of the shell through the pickup hole can be collected by the microphone through the tunnel sound cavity, the vibration of the sound wave in the cavity structure of the tunnel sound cavity can play a role in enhancing the sound wave, so that the loss to the sound intensity caused by the distance can be compensated, therefore, the tunnel sound cavity isolated between the pickup hole and the microphone cannot reduce the sound intensity due to the increase of the isolation distance, and on the contrary, the pickup performance can not be obviously reduced on the premise of meeting the requirement of electrostatic insulation.
Drawings
The following drawings are only schematic illustrations and explanations of the present invention, and do not limit the scope of the present invention.
Fig. 1 and 2 are schematic structural views of two types of sound pickup apparatuses in the related art.
Fig. 3 is a side cross-sectional view of the sound pickup apparatus of the present invention.
Fig. 4 is a top view of the tunnel acoustic chamber of the present invention.
FIG. 5 is a cross-sectional view of a cavity wall member in the present invention.
Detailed Description
In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings, in which like reference numerals refer to like parts throughout.
"exemplary" means "serving as an example, instance, or illustration" herein, and any illustration, embodiment, or steps described as "exemplary" herein should not be construed as a preferred or advantageous alternative.
For the sake of simplicity, the drawings are only schematic representations of the parts relevant to the invention, and do not represent the actual structure of the product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled.
In order to solve the problem of electrostatic interference of the recording hole in the prior art, the invention aims to provide a sound pickup device and a cavity wall member for the sound pickup device, which increase the distance between the sound pickup hole and a microphone by arranging a tunnel sound cavity between the sound pickup hole and the microphone so as to realize the effect of electrostatic isolation, and compensate the loss of sound intensity caused by the distance through the oscillation effect of sound waves in the tunnel sound cavity.
Fig. 3 is a side sectional view of the sound pickup apparatus of the present invention, fig. 4 is a top view of a tunnel sound cavity in the present invention, and as shown in fig. 3 and 4, an embodiment of the present invention provides a sound pickup apparatus including:
a shell 10, wherein the surface 11 of the shell 10 is provided with a sound pickup hole 12, and the sound pickup hole 12 is a passage for sound waves outside the sound pickup device to enter the interior of the shell 10;
a microphone 20 disposed inside the case 10 for picking up sound waves entering the inside of the case 10; and
a tunnel sound cavity 30, the tunnel sound cavity 30 being formed inside the housing 10 and isolated between the sound pickup hole 12 and the microphone 20, the sound pickup hole 12 and the microphone 20 both communicating with the tunnel sound cavity 30, and sound waves entering the inside of the housing 10 through the sound pickup hole 12 being picked up by the microphone 20 via the tunnel sound cavity 30.
As can be seen from the above technical solutions, the sound pickup apparatus of the present invention has the tunnel sound cavity disposed between the sound pickup hole and the microphone, and the purpose of increasing the distance between the sound pickup hole and the microphone is achieved by the three-dimensional cavity structure, and due to the cavity structure of the tunnel sound cavity, the isolation between the sound pickup hole and the microphone is not only embodied in the distance along the vertical direction perpendicular to the surface of the housing, but also in the distance along the horizontal direction parallel to the surface of the housing, so that compared with the prior art in which the isolation is achieved only by increasing the linear distance between the sound pickup hole and the microphone (i.e., the vertical direction described above), the sound pickup apparatus of the present invention does not increase the thickness of the sound pickup apparatus, i.e., the linear distance between the sound pickup hole and the microphone, to a great extent.
Further, the sound wave entering the inside of the shell through the pickup hole can be collected by the microphone through the tunnel sound cavity, the vibration of the sound wave in the cavity structure of the tunnel sound cavity can play a role in enhancing the sound wave, so that the loss to the sound intensity caused by the distance can be compensated, therefore, the tunnel sound cavity isolated between the pickup hole and the microphone cannot reduce the sound intensity due to the increase of the isolation distance, and on the contrary, the pickup performance can not be obviously reduced on the premise of meeting the requirement of electrostatic insulation.
Specifically, as shown in fig. 3 and 4, the height direction of the tunnel sound cavity 30 is a direction perpendicular to the surface 11 (extending direction of the height H in the drawing). The sound pickup hole 12 and the microphone 20 are located outside the upper and lower surfaces 31, 32 of the tunnel sound cavity 30, respectively, and the vertical distance between the sound pickup hole 12 and the microphone 20 is a height H.
Further, as shown in fig. 4, the sound pickup hole 12 and the microphone 20 have a horizontal distance L therebetween in a horizontal direction parallel to the surface 11.
It can be seen that the isolation of the sound-collecting hole 12 and the microphone 20 by the tunnel sound cavity 30 is not only in the vertical direction but also in the horizontal direction, and the linear distance between the sound-collecting hole 12 and the microphone 20 is changed from the vertical distance to the length of the diagonal line of the triangle formed by the horizontal distance L and the vertical distance H by adding the distance L in the horizontal direction.
In addition, as is apparent from the above effects, increasing the straight distance (diagonal length) between the sound pickup hole 12 and the microphone 20 can be achieved not only by increasing the vertical distance H but also by increasing the horizontal distance L. Since increasing the vertical distance H affects the thickness of the product, particularly in some ultra-thin products, the effect is particularly serious, but not only the purpose of increasing the linear distance between the sound pickup hole 12 and the microphone 20, but also the internal space of the product can be fully utilized by increasing the horizontal distance L without adversely affecting the external dimensions of the product.
Therefore, it is preferable that the horizontal distance L is greater than the height H for the purpose of maximally increasing the straight distance between the sound pickup hole 12 and the microphone 20.
Specifically, as shown in fig. 3 and 4, the upper surface 31 of the tunnel sound cavity 30 is hollowed out, the top of the tunnel sound cavity 30 is directly attached to the surface 11, the lower surface 32 of the tunnel sound cavity 30 is provided with the microphone hole 21, and the position of the microphone 20 corresponds to the position of the microphone hole 21.
As shown in fig. 4, the tunnel sound cavity 30 has a pair of opposite first side walls 33a and 33b extending in the height direction, the sound pickup hole 12 and the microphone hole 21 are respectively adjacent to one of the first side walls 33a and 33b, for example, the sound pickup hole 12 is adjacent to the first side wall 33a, and the microphone hole 21 is adjacent to the other first side wall 33 b.
In the above embodiment, the first side walls 33a and 33b are described as the side walls located at both ends of the long side of the rectangular parallelepiped, in order to maximize the linear distance between the pickup hole 12 and the microphone 20, it is understood that the first side walls 33a and 33b may be the side walls located at both ends of the short side of the rectangular parallelepiped.
Preferably, the exterior of the tunnel sound cavity 30 further includes a microphone base 40, the microphone base 40 being located outside the lower surface 32 of the tunnel sound cavity 30 to secure the microphone 20 in a position corresponding to the microphone aperture 21. The outside of the tunnel sound cavity 30 is a space outside a rectangular parallelepiped cavity formed by enclosing the cavity walls of the tunnel sound cavity 30. The microphone base 40 is located on the outer surface of the tunnel sound cavity 30 at a position corresponding to the microphone hole 21. In one particular embodiment, as shown in fig. 3, the microphone base 40 may be a base sidewall extending from the outer surface of the tunnel sound cavity 30 away from the tunnel sound cavity 30, the base sidewall enclosing the microphone aperture 21 therein, and enclosing with the lower surface 32 of the tunnel sound cavity 30 a base for securing the microphone 20.
Specifically, the top of the tunnel sound cavity 30 is glued to the surface 11 to seal the tunnel sound cavity 30. The upper surface 31 of the tunnel sound cavity 30 is hollowed out, and the top of the tunnel sound cavity 30 is glued with the surface 11, so that the surface 11 can be directly used as the upper surface of the tunnel sound cavity 30. The surface 11 may be a panel decoration of the sound pickup apparatus, and the sound pickup hole 12 is an opening formed in the panel decoration. The top of the tunnel sound cavity 30 is directly glued with the surface 11, so that good sealing performance of the tunnel sound cavity 30 can be ensured, and sound leakage is avoided.
In one embodiment of the present invention, the tunnel sound cavity 30 is not formed by tunneling inside the sound pickup apparatus, but is formed by enclosing a cavity wall member inside the sound pickup apparatus.
As shown in fig. 3 and 5, the present embodiment provides a cavity wall member for forming the tunnel sound cavity 30 of the sound pickup apparatus described above, including:
a lower surface 32, the lower surface 32 having a microphone aperture 21 therein; and
side walls extending vertically from the edge of the lower surface 32, the side walls enclosing each other to form a closed loop;
the sound pickup apparatus comprises a housing 10, a surface 11 of the housing 10 having a sound pickup hole 12, and a cavity wall member forming a tunnel sound cavity 30 inside the housing 10.
The top of the sidewall is attached to the inner side of the surface 11, the sound pickup hole 12 is located inside the closed ring, the sidewall, the lower surface 32 and the surface 11 enclose to form a hollow cavity, and sound waves enter the hollow cavity 30 through the sound pickup hole 12 and leave the hollow cavity 30 through the microphone hole 21.
Preferably, the side walls include at least one pair of first opposing side walls 33a, 33b, and the sound pickup hole 12 and the microphone hole 21 are adjacent to one of the first side walls 33a, 33b, respectively. For example, the sound pickup hole 12 is adjacent to the first side wall 33a, and the microphone hole 21 is adjacent to the other first side wall 33 b.
Preferably, the cavity wall member of the present embodiment further comprises:
a microphone base 40, the microphone base 40 being located outside the lower surface 32, enclosing the microphone hole 21 therein to fix the microphone 20 to a position corresponding to the microphone hole 21. The outside of the tunnel sound cavity 30 is a space outside a rectangular parallelepiped cavity formed by enclosing the cavity walls of the tunnel sound cavity 30. The microphone base 40 is located on the outer surface of the tunnel sound cavity 30 at a position corresponding to the microphone hole 21. In one particular embodiment, as shown in fig. 3, the microphone base 40 may be a base sidewall extending from the outer surface of the tunnel sound cavity 30 away from the tunnel sound cavity 30, the base sidewall enclosing the microphone aperture 21 therein, and enclosing with the lower surface 32 of the tunnel sound cavity 30 a base for securing the microphone 20.
Further, as shown in fig. 5, the sidewall may further include a flange 34 extending from the top of the sidewall toward the outside of the hollow cavity 30, which may be, for example, a flange formed integrally with the sidewall (e.g., a flange of the sidewall 33b in fig. 5), or, for example, formed by an additional member combined with the sidewall (e.g., a flange of the sidewall 33a in fig. 5). The flange 34 serves to increase the area of the side wall connecting with the surface 11 of the housing to ensure the sealing of the tunnel sound chamber 30.
In this embodiment, the cavity wall member forming the tunnel acoustic cavity 30 may be a one-piece member or a combined member, such as a two-piece combined structure. When the upper surface of the cavity wall member of this embodiment is hollowed and the surface 11 of the casing 10 is directly used as the upper surface of the tunnel sound cavity 30, the cavity wall member may be an integrated structure, wherein the cavity body may be obtained by grooving and hollowing. Alternatively, the cavity wall member of this embodiment may be a two-piece composite structure that encloses a hollow cavity with sidewalls.
The tunnel sound cavity can be directly formed in the pickup device through the cavity wall member of the invention so as to isolate the tunnel sound cavity between the pickup hole and the microphone, and the aim of increasing the distance between the pickup hole and the microphone is achieved through the three-dimensional cavity structure.
Further, the sound wave entering the inside of the shell through the pickup hole can be collected by the microphone through the tunnel sound cavity, the vibration of the sound wave in the cavity structure of the tunnel sound cavity can play a role in enhancing the sound wave, so that the loss to the sound intensity caused by the distance can be compensated, therefore, the tunnel sound cavity isolated between the pickup hole and the microphone cannot reduce the sound intensity due to the increase of the isolation distance, and on the contrary, the pickup performance can not be obviously reduced on the premise of meeting the requirement of electrostatic insulation.
In this document, "a" does not mean that the number of the relevant portions of the present invention is limited to "only one", and "a" does not mean that the number of the relevant portions of the present invention "more than one" is excluded.
Unless otherwise indicated, numerical ranges herein include not only the entire range within its two endpoints, but also several sub-ranges subsumed therein.
The above-listed detailed description is only a specific description of a possible embodiment of the present invention and is not intended to limit the scope of the present invention, and equivalent embodiments or modifications such as combinations, divisions or repetitions of the features without departing from the technical spirit of the present invention are included in the scope of the present invention.
Claims (10)
1. A sound pickup apparatus, comprising:
a shell (10), wherein the surface (11) of the shell (10) is provided with a sound pickup hole (12);
a microphone (20), the microphone (20) being disposed inside the housing (10); and
a tunnel sound cavity (30), the tunnel sound cavity (30) being formed inside the housing (10) and isolated between the sound pickup hole (12) and the microphone (20), the sound pickup hole (12) and the microphone (20) both communicating with the tunnel sound cavity (30), sound waves entering the housing (10) through the sound pickup hole (12) being picked up by the microphone (20) via the tunnel sound cavity (30).
2. The sound pickup apparatus as claimed in claim 1, wherein a height (H) direction of the tunnel sound cavity (30) is a direction perpendicular to the surface (11),
the sound pickup hole (12) and the microphone (20) are respectively positioned on the outer sides of the upper surface (31) and the lower surface (32) of the tunnel sound cavity (30), and the vertical distance between the sound pickup hole (12) and the microphone (20) is the height (H).
3. A sound pick-up apparatus according to claim 2, characterised in that the sound pick-up hole (12) and the microphone (20) have a horizontal distance (L) between them in a horizontal direction parallel to the surface (11).
4. The pickup apparatus as recited in claim 3, wherein the horizontal distance (L) is greater than the height (H).
5. The sound pickup apparatus as claimed in claim 2, wherein the upper surface (31) of the tunnel sound cavity (30) is hollowed out, and the top of the tunnel sound cavity (30) is directly attached to the surface (11);
the lower surface (32) of the tunnel sound cavity (30) is provided with a microphone hole (21), and the position of the microphone (20) corresponds to the position of the microphone hole (21).
6. The sound pickup apparatus according to claim 5, wherein the tunnel sound cavity (30) has a pair of opposing first side walls (33a, 33b) extending in the height (H) direction,
the pickup hole (12) and the microphone hole (21) are adjacent to one of the first side walls (33a, 33b), respectively.
7. The pickup apparatus as claimed in claim 5, wherein the exterior of the tunnel sound cavity (30) further comprises a microphone base (40), the microphone base (40) being located outside the lower surface (32) of the tunnel sound cavity (30) to secure the microphone (20) to a position corresponding to the microphone hole (21).
8. A cavity wall member for forming a tunnel sound cavity (30) of a sound pickup apparatus as claimed in any one of claims 1 to 7, comprising:
a lower surface (32), the lower surface (32) having a microphone aperture (21) thereon; and
side walls extending vertically from edges of the lower surface (32), the side walls enclosing each other to form a closed loop;
the pickup equipment comprises a shell (10), wherein the surface (11) of the shell (10) is provided with a pickup hole (12),
the top laminating of lateral wall the inboard of surface (11), sound pick-up hole (12) are located inside the closed ring shape, lateral wall, lower surface (32) and surface (11) enclose and close and form the cavity, and the sound wave passes through sound pick-up hole (12) and gets into this cavity, via this cavity is left in microphone hole (21).
9. The cavity wall member of claim 8, further comprising:
a microphone base (40), the microphone base (40) being located outside the lower surface (32) and enclosing the microphone aperture (21) therein.
10. Cavity wall component according to claim 8, wherein the side walls comprise at least one pair of opposite first side walls (33a, 33b), the sound pick-up hole (12) and the microphone hole (21) being adjacent to one of the first side walls (33a, 33b), respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910505465.5A CN112087681A (en) | 2019-06-12 | 2019-06-12 | Pickup device and cavity wall component for same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910505465.5A CN112087681A (en) | 2019-06-12 | 2019-06-12 | Pickup device and cavity wall component for same |
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| Publication Number | Publication Date |
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| CN112087681A true CN112087681A (en) | 2020-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910505465.5A Pending CN112087681A (en) | 2019-06-12 | 2019-06-12 | Pickup device and cavity wall component for same |
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| Country | Link |
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| CN (1) | CN112087681A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113784252A (en) * | 2021-10-28 | 2021-12-10 | 歌尔科技有限公司 | Earphone and TWS earphone |
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| CN113784252B (en) * | 2021-10-28 | 2022-10-18 | 歌尔科技有限公司 | Earphone and TWS earphone |
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Application publication date: 20201215 |