An ear canal hearing aid panel adapted for silicon microphone

Abstract

The utility model relates to the technical field of hearing aid panels, and discloses an ear canal hearing aid panel adapted to a silicon microphone, including a hearing aid panel, a battery compartment door, a battery electrode, a compartment door post, and a programming electrode are arranged on the inner side of the hearing aid panel, and a silicon microphone compartment is also arranged on the inner side of the hearing aid panel, the silicon microphone compartment includes a silicon microphone slot and a silicon microphone body, the silicon microphone body is attached to the edge of the silicon microphone slot and protrudes toward the inner side of the hearing aid panel, and a silicon microphone cavity sound receiving hole and a grounding electrode are arranged on the silicon microphone body, the silicon microphone cavity sound receiving hole is connected to the microphone hole on the outer side of the hearing aid panel, and the grounding electrode is used for welding with the silicon microphone electrode. The ear canal hearing aid panel adapted to a silicon microphone has the advantages of changing the shape of the silicon microphone and changing the sound conduction path, and can realize the vertical installation of the silicon microphone with a small panel modification, so that the ear canal hearing aid can be suitable for the silicon microphone.

Description

Technical Field

[0001] The utility model relates to the technical field of hearing aid panels, in particular to an ear canal hearing aid panel adapted to a silicon microphone. Background Art

[0002] Traditional electret microphones have always played an important role in the hearing aid industry. However, with the iteration of products, their performance has also become saturated. Many international manufacturers have also slowed down their research and development, and the development of hearing aid microphones has also reached a bottleneck. In recent years, silicon microphones have become a new development direction due to their excellent performance. They are characterized by low price, small package size, strong consistency, high temperature resistance, SMT patch capability, etc. They have been successfully applied to many electronic products such as mobile phones, tablets, smart watches, and bracelets. However, due to the incompatibility of the silicon microphone shape with the traditional hearing aid panel and the inconsistent sound conduction path, they cannot be used directly, which has hindered the development of hearing aids. The present utility model provides an ear canal hearing aid panel structure design that is compatible with the silicon microphone, which can change the sound conduction path, thereby allowing the ear canal hearing aid to use the silicon microphone.

[0003] Patent document number CN202068570U discloses a hearing aid panel arrangement, which includes: a hearing aid housing; and a panel arrangement located on the hearing aid housing, the panel arrangement including: a panel, the panel including a receiving portion; and a panel module, the panel module including a panel module housing having an electronic circuit; wherein the panel module is configured to fit into the receiving portion.

[0004] The electret microphone has sound intake at the head and is welded at the tail, so the microphone can be installed vertically on a traditional panel. Silicon microphones come in various shapes. The soldering point and the sound receiving hole of the common bottom-input silicon microphone are on the same side. If the sound intake hole is installed facing downward, welding cannot be performed. The soldering point and the sound intake hole of the top-input silicon microphone are on opposite sides. Although this avoids the problem of being unable to weld, it can only be installed horizontally like the bottom-input silicon microphone, which takes up a lot of panel space and causes problems for the miniaturization of hearing aids. The example of the present utility model provides a silicon microphone panel structure design that is adapted to the panel of an in-ear hearing aid. By changing the shape of the silicon microphone and changing the sound conduction path, the silicon microphone can be installed vertically with relatively minor panel changes, thereby allowing the in-ear hearing aid to be suitable for silicon microphones. Utility Model Content

[0005] (1) Technical problems solved

[0006] In response to the shortcomings of the existing technology, the utility model provides an in-ear hearing aid panel that is compatible with a silicon microphone. It has the advantages of changing the shape of the silicon microphone to change the sound conduction path, and can achieve vertical installation of the silicon microphone with minor changes to the panel, so that the in-ear hearing aid can be used with the silicon microphone, solving the problem of incompatibility between the shape of the silicon microphone and the traditional hearing aid panel.

[0007] (2) Technical solution

[0008] To achieve the above objectives, the present invention provides the following technical solutions:

[0009] An in-ear hearing aid faceplate adapted for a silicon microphone, comprising a hearing aid faceplate, a battery compartment door for securing a hearing aid battery disposed on the inner side of the hearing aid faceplate, battery electrodes disposed on both sides of the battery compartment door, door posts disposed within the battery compartment door for securing the battery compartment door, programming electrodes protruding toward the inner side of the hearing aid faceplate at either end of the battery compartment door, and a silicon microphone compartment for mounting a silicon microphone disposed on the inner side of the hearing aid faceplate;

[0010] The silicon microphone includes a main shell and a back plate. The side of the back plate facing away from the main shell is provided with a silicon microphone pole piece and a silicon microphone sound inlet. The silicon microphone cabin includes a silicon microphone slot and a silicon microphone main body. The silicon microphone main body is attached to the edge of the silicon microphone slot and protrudes towards the inner side of the hearing aid panel. The silicon microphone main body is provided with a silicon microphone cavity sound receiving hole and a grounding electrode. The silicon microphone cavity sound receiving hole is connected to the microphone hole on the outside of the hearing aid panel, and the grounding electrode is used for welding with the silicon microphone pole piece.

[0011] Preferably, the silicon microphone is fixed upright in the silicon microphone cabin by glue, wherein the silicon microphone pole piece and the grounding pole piece are fixed together by welding, and the silicon microphone sound inlet nozzle is aligned with the silicon microphone cavity sound receiving hole.

[0012] Preferably, two symmetrical movable spring blocks are provided on both sides of the silicon wheat trough, and the top of any movable spring block is rotatably connected to a rotating column provided in the silicon wheat trough, wherein a movable opening is provided at a portion where the movable spring block is rotatably connected to the rotating column, and the movable spring block is connected to the silicon wheat trough via a spring;

[0013] When the silicon microphone is installed in the silicon microphone slot, the bottom of the movable spring block bounces toward the middle position of the silicon microphone slot under the action of the spring. When the bottom of the silicon microphone is inserted into the silicon microphone slot, the movable spring block rotates to the side away from the silicon microphone slot. When the silicon microphone is fully inserted into the silicon microphone slot, the movable opening is in a vertical state, and the movable opening is located at a position facing away from the silicon microphone. At this time, the top of the movable spring block is disengaged from the rotation connection with the rotating column, and the movable spring block clamps the silicon microphone inward as a whole under the action of the spring.

[0014] Preferably, cover layers are provided on both sides of the silicon wheat trough, and each cover layer covers the top of the movable spring block to prevent the movable spring block from falling off when not in use.

[0015] Preferably, a deep groove is provided in the silicon wheat slot at a position corresponding to the back plate, and a convex rib is provided on the inner wall of the deep groove close to the silicon wheat body, which serves to fix the back plate more tightly in the silicon wheat slot.

[0016] Preferably, any battery electrode is composed of two separate gold-plated metal sheets, and the battery electrode connects the positive and negative electrodes of the battery to the power supply circuit.

[0017] Preferably, the programming electrode is composed of three or four gold-plated alloy pieces, and the programming electrode is used to program and communicate with the hearing aid by inserting a programming line.

[0018] Preferably, the microphone hole is a hole on the hearing aid panel, and the microphone hole is connected to the silicon microphone cabin to introduce external sound into the hearing aid.

[0019] Preferably, the silicon microphone body protrudes on the hearing aid panel, and the silicon microphone body is a hollow structure inside and at the bottom. The silicon microphone cavity sound receiving hole is connected to the internal cavity of the silicon microphone cabin, and the hollow part at the bottom of the silicon microphone body is connected to the microphone hole.

[0020] (3) Beneficial effects

[0021] Compared with the prior art, the present invention provides an ear canal hearing aid panel adapted to a silicon microphone, which has the following beneficial effects:

[0022] The in-ear hearing aid panel adapted for a silicon microphone is configured by arranging a silicon microphone cabin on the inner side of the hearing aid panel. The silicon microphone cabin includes a silicon microphone groove and a silicon microphone body. The silicon microphone body is attached to the edge of the silicon microphone groove and protrudes toward the inner side of the hearing aid panel. The silicon microphone body is provided with a silicon microphone cavity sound receiving hole and a grounding electrode. The silicon microphone cavity sound receiving hole is connected to the microphone hole on the outer side of the hearing aid panel. The grounding electrode is used for welding to the silicon microphone electrode piece, thereby converting the horizontal installation of the silicon microphone into a vertical installation, thereby adapting the in-ear hearing aid panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Schematic diagram of the structure of a traditional electret microphone.

[0024] Figure 2 This is a schematic diagram of the structure of the silicon microphone of the present invention.

[0025] Figure 3 This is a schematic diagram of the inner structure of the hearing aid panel according to the first embodiment of the present invention.

[0026] Figure 4 for Figure 3 A partial enlarged view of area A in the middle.

[0027] Figure 5 for Figure 4 A partial enlarged view of area B in the middle.

[0028] Figure 6 This is a structural diagram of the hearing aid panel after the silicon microphone is installed in Example 1 of the present utility model.

[0029] Figure 7 for Figure 6 A partial enlarged view of the middle C area.

[0030] Figure 8 This is a schematic diagram of the outer structure of the ear canal hearing aid panel equipped with a silicon microphone according to the present invention.

[0031] Figure 9 This is a structural diagram of the silicon microphone cabin of the second embodiment of the present invention.

[0032] Figure 10 This is a cross-sectional view of the silicon microphone cabin of the second embodiment of the present invention when no silicon microphone is installed.

[0033] Figure 11 This is a cross-sectional view of the silicon microphone cabin when a silicon microphone is installed according to the second embodiment of the present invention.

[0034] In the figure: 100, silicon microphone; 110, main shell; 120, back plate; 130, silicon microphone pole piece; 140, silicon microphone sound inlet;

[0035] 200, hearing aid faceplate; 210, battery compartment door; 220, battery electrode; 230, programming electrode; 240, compartment door post; 250, silicon microphone compartment; 251, silicon microphone slot; 252, silicon microphone body; 253, grounding electrode; 254, silicon microphone cavity sound receiving hole; 260, microphone hole; 2511, deep groove; 2512, rib; 2513, cover layer;

[0036] 300, movable spring block; 310, spring; 320, rotating column; 301, movable opening. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0038] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0040] Example 1:

[0041] This embodiment provides an in-ear hearing aid panel adapted to a silicon microphone, having the following technical features.

[0042] See also Figure 1-8 A canal hearing aid faceplate adapted for a silicon microphone includes a hearing aid faceplate 200. A battery compartment door 210 for securing a hearing aid battery is disposed on the inner side of the hearing aid faceplate 200. Battery electrodes 220 are disposed on both sides of the battery compartment door 210. A door post 240 is disposed within the battery compartment door 210 for securing the battery compartment door 210. Programming electrodes 230 protruding toward the inner side of the hearing aid faceplate 200 are disposed at either end of the battery compartment door 210. A silicon microphone compartment 250 for mounting a silicon microphone 100 is also disposed on the inner side of the hearing aid faceplate 200.

[0043] The silicon microphone 100 includes a main shell 110 and a back plate 120. The side of the back plate 120 facing away from the main shell 110 is provided with a silicon microphone pole piece 130 and a silicon microphone sound inlet nozzle 140. The silicon microphone cabin 250 includes a silicon microphone slot 251 and a silicon microphone main body 252. The silicon microphone main body 252 is attached to the edge of the silicon microphone slot 251 and protrudes toward the inner side of the hearing aid panel 200. The silicon microphone main body 252 is provided with a silicon microphone cavity sound receiving hole 254 and a grounding electrode 253. The silicon microphone cavity sound receiving hole 254 is connected to the microphone hole 260 on the outside of the hearing aid panel 200. The grounding electrode 253 is used for welding with the silicon microphone pole piece 130.

[0044] In an optional embodiment, the silicon microphone 100 is fixed upright in the silicon microphone chamber 250 by glue, wherein the silicon microphone pole piece 130 and the grounding pole piece 253 are fixed together by welding, and the silicon microphone sound inlet nozzle 140 is aligned with the silicon microphone cavity sound receiving hole 254.

[0045] It should be noted that the connection between the silicon microphone 100 and the silicon microphone cabin body 250 needs to be fixed with glue and kept sealed.

[0046] In an optional embodiment, any battery electrode 220 is composed of two separate gold-plated metal sheets, and the battery electrode 220 connects the positive and negative electrodes of the battery to the power supply circuit.

[0047] In an optional embodiment, the programming pole piece 230 is composed of three or four gold-plated alloy pieces, and the programming pole piece 230 is used to program and communicate with the hearing aid by inserting a programming line.

[0048] In an optional embodiment, the microphone hole 260 is a hole on the hearing aid panel 200. The microphone hole 260 is connected to the silicon microphone capsule 250 to guide external sound into the hearing aid.

[0049] In an optional embodiment, the silicon microphone body 252 protrudes from the hearing aid panel 200. The silicon microphone body 252 is a hollow structure inside and at the bottom. The silicon microphone cavity sound receiving hole 254 is connected to the internal cavity of the silicon microphone cabin 250, and the hollow part at the bottom of the silicon microphone body 252 is connected to the microphone hole 260.

[0050] Example 2:

[0051] This embodiment provides an in-ear hearing aid panel adapted to a silicon microphone, having the following technical features.

[0052] See also Figure 9-11 A canal hearing aid faceplate adapted for a silicon microphone includes a hearing aid faceplate 200. A battery compartment door 210 for securing a hearing aid battery is disposed on the inner side of the hearing aid faceplate 200. Battery electrodes 220 are disposed on both sides of the battery compartment door 210. A door post 240 is disposed within the battery compartment door 210 for securing the battery compartment door 210. Programming electrodes 230 protruding toward the inner side of the hearing aid faceplate 200 are disposed at either end of the battery compartment door 210. A silicon microphone compartment 250 for mounting a silicon microphone 100 is also disposed on the inner side of the hearing aid faceplate 200.

[0053] The silicon microphone 100 includes a main shell 110 and a backplate 120. The backplate 120, facing away from the main shell 110, is provided with a silicon microphone pole piece 130 and a silicon microphone sound inlet 140. The silicon microphone chamber 250 includes a silicon microphone slot 251 and a silicon microphone body 252. The silicon microphone body 252 is attached to the edge of the silicon microphone slot 251 and protrudes into the inner side of the hearing aid faceplate 200. The silicon microphone body 252 is provided with a silicon microphone cavity sound receiving hole 254 and a grounding electrode 253. The silicon microphone cavity sound receiving hole 254 is connected to the microphone hole 260 on the outside of the hearing aid faceplate 200. The grounding electrode 253 is used for welding to the silicon microphone pole piece 130.

[0054] Two symmetrical movable springs 300 are provided on either side of the silicon wheat trough 251. The top of each movable spring 300 is rotatably connected to a rotating column 320 provided in the silicon wheat trough 251. A movable opening 301 is provided at the portion where the movable spring 300 and the rotating column 320 are rotatably connected. The movable spring 300 and the silicon wheat trough 251 are connected via a spring 310.

[0055] When the silicon microphone 100 is installed in the silicon microphone slot 251, the bottom of the movable spring block 300 bounces toward the middle position of the silicon microphone slot 251 under the action of the spring 310. When the bottom of the silicon microphone 100 is inserted into the silicon microphone slot 251, the movable spring block 300 rotates to the side away from the silicon microphone slot 251. When the silicon microphone 100 is fully inserted into the silicon microphone slot 251, the movable opening 301 is in a vertical state, and the movable opening 301 is located at a position facing away from the silicon microphone 100. At this time, the top of the movable spring block 300 is disengaged from the rotation connection with the rotating column 320, and the movable spring block 300 clamps the silicon microphone 100 inward as a whole under the action of the spring 310.

[0056] In an optional embodiment, cover layers 2513 are provided on both sides of the silicon wheat groove 251, and each cover layer 2513 covers the top of the movable spring block 300 to prevent the movable spring block 300 from falling off when not in use.

[0057] In an optional embodiment, a deep groove 2511 is provided in the silicon microphone groove 251 at a position corresponding to the back plate 120, and a rib 2512 is provided on the inner wall of the deep groove 2511 close to the silicon microphone body 252, which serves to fix the back plate 120 more tightly in the silicon microphone groove 251.

[0058] It should be noted that the movable spring block 300 can be set not only in the entire silicon wheat groove 251 , but also in the deep groove 2511 .

[0059] Working principle: When the silicon microphone 100 is installed in the silicon microphone slot 251, the bottom of the movable spring block 300 bounces toward the middle position of the silicon microphone slot 251 under the action of the spring 310. When the bottom of the silicon microphone 100 is inserted into the silicon microphone slot 251, the bottom of the silicon microphone 100 pushes the movable spring block 300 to the side away from the silicon microphone slot 251. When the silicon microphone 100 is fully inserted into the silicon microphone slot 251, the movable opening 301 is in a vertical state, and the movable opening 301 is located at a position facing away from the silicon microphone 100. At this time, the top of the movable spring block 300 is disengaged from the rotation connection with the rotating column 320, and the movable spring block 300 is clamped inward as a whole by the action of the spring 310 to clamp the silicon microphone 100;

[0060] When the silicon microphone 100 is pulled out, the movable spring block 300 will fall off the rotating column 320. At this time, you only need to press the movable spring block 300 into the rotating column 320 in a vertical state, or pull it out slowly when pulling out the silicon microphone 100. Under the action of the spring 310 and the cover layer 2513, the movable spring block 300 will still rotate and be connected to the rotating column 320 without falling off.

[0061] To sum up, the in-ear hearing aid panel adapted for the silicon microphone is configured by setting a silicon microphone cabin 250 on the inner side of the hearing aid panel 200. The silicon microphone cabin 250 includes a silicon microphone groove 251 and a silicon microphone main body 252. The silicon microphone main body 252 is attached to the edge of the silicon microphone groove 251 and protrudes toward the inner side of the hearing aid panel 200. The silicon microphone main body 252 is provided with a silicon microphone cavity sound receiving hole 254 and a grounding electrode 253. The silicon microphone cavity sound receiving hole 254 is connected to the microphone hole 260 on the outside of the hearing aid panel 200. The grounding electrode 253 is used to weld with the silicon microphone electrode 130, thereby converting the horizontal installation of the silicon microphone 100 into a vertical installation, thereby adapting to the in-ear hearing aid panel 200.

[0062] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0063] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An in-ear hearing aid panel adapted for a silicon microphone, characterized in that: The hearing aid panel (200) comprises a battery compartment door (210) for fixing a hearing aid battery, the inner side of the hearing aid panel (200) is provided with a battery compartment door (210) for fixing a hearing aid battery, the inner side of the hearing aid panel (200) is provided with battery pole pieces (220) on both sides of the battery compartment door (210), the battery compartment door (210) is provided with a compartment door post (240) for fixing the battery compartment door (210), the hearing aid panel (200) is provided with a programming pole piece (230) protruding toward the inner side of the hearing aid panel (200) at either end of the battery compartment door (210), and the inner side of the hearing aid panel (200) is also provided with a silicon microphone compartment (250) for installing a silicon microphone (100); The silicon microphone (100) comprises a main shell (110) and a back plate (120); a silicon microphone pole piece (130) and a silicon microphone sound inlet nozzle (140) are arranged on a side of the back plate (120) facing away from the main shell (110); the silicon microphone chamber (250) comprises a silicon microphone groove (251) and a silicon microphone body (252); the silicon microphone body (252) is attached to the edge of the silicon microphone groove (251) and protrudes toward the inner side of the hearing aid panel (200); a silicon microphone cavity sound receiving hole (254) and a grounding electrode piece (253) are arranged on the silicon microphone body (252); the silicon microphone cavity sound receiving hole (254) is connected to the microphone hole (260) on the outer side of the hearing aid panel (200); and the grounding electrode piece (253) is used for welding with the silicon microphone pole piece (130).

2. The ear canal hearing aid panel adapted with a silicon microphone according to claim 1, characterized in that: The silicon microphone (100) is vertically fixed in the silicon microphone chamber (250) by glue, wherein the silicon microphone pole piece (130) and the grounding pole piece (253) are fixed together by welding, and the silicon microphone sound inlet nozzle (140) is aligned with the silicon microphone cavity sound receiving hole (254).

3. The ear canal hearing aid panel adapted with a silicon microphone according to claim 1, characterized in that: At least two symmetrical movable spring blocks (300) are arranged on both sides of the silicon wheat trough (251), and the top of any movable spring block (300) is rotatably connected to a rotating column (320) arranged in the silicon wheat trough (251), wherein a movable opening (301) is arranged at a portion where the movable spring block (300) is rotatably connected to the rotating column (320), and the movable spring block (300) is connected to the silicon wheat trough (251) via a spring (310); When the silicon microphone (100) is installed in the silicon microphone slot (251), the bottom of the movable spring block (300) bounces up to the middle position of the silicon microphone slot (251) under the action of the spring (310). When the bottom of the silicon microphone (100) is inserted into the silicon microphone slot (251), the movable spring block (300) rotates to the side away from the silicon microphone slot (251). When the silicon microphone (100) is fully inserted into the silicon microphone slot (251), the movable opening (301) is in a vertical state, and the movable opening (301) is located at a position facing away from the silicon microphone (100). At this time, the top of the movable spring block (300) is disconnected from the rotation connection with the rotating column (320), and the movable spring block (300) moves inward as a whole under the action of the spring (310) to clamp the silicon microphone (100).

4. The ear canal hearing aid panel adapted with a silicon microphone according to claim 3, characterized in that: Cover layers (2513) are provided on both sides of the silicon wheat groove (251), and each cover layer (2513) covers the top of the movable spring block (300).

5. The ear canal hearing aid panel adapted with a silicon microphone according to claim 1, characterized in that: A deep groove (2511) is provided in the silicon microphone groove (251) at a position corresponding to the back plate (120), and a convex rib (2512) is provided on the inner wall of the deep groove (2511) on a side close to the silicon microphone body (252).

6. The in-ear hearing aid panel with a silicon microphone according to claim 1, characterized in that: Any battery pole piece (220) is composed of two separated gold-plated metal sheets, and the battery pole piece (220) connects the positive and negative poles of the battery to the power supply circuit.

7. The ear canal hearing aid panel with a silicon microphone according to claim 1, characterized in that: The programming pole piece (230) is composed of three or four gold-plated alloy pieces, and the programming pole piece (230) is used to program and communicate with the hearing aid by inserting a programming line.

8. The ear canal hearing aid panel adapted with a silicon microphone according to claim 1, characterized in that: The microphone hole (260) is a hole on the hearing aid panel (200), the microphone hole (260) is connected to the silicon microphone cabin (250), and the microphone hole (260) guides external sound into the hearing aid.

9. The ear canal hearing aid panel adapted with a silicon microphone according to claim 8, characterized in that: The silicon microphone body (252) protrudes from the hearing aid panel (200), and the silicon microphone body (252) is a structure with a hollow interior and a hollow bottom. The silicon microphone cavity sound receiving hole (254) is connected to the internal cavity of the silicon microphone cabin (250), and the hollow part at the bottom of the silicon microphone body (252) is connected to the microphone hole (260).

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