A hearing aid structure with echo suppression effect

Abstract

This utility model discloses a hearing aid structure with echo suppression effect, including a shell and a cover, which are fastened together. A sound outlet unit is provided on the end face of the shell, and a sound inlet unit is provided on the end face of the cover. The sound outlet unit and the sound inlet unit are located on the same straight line. A PCB board is installed inside the shell. A receiver component is flexibly connected between the PCB board and the sound outlet unit. A sound amplification component is flexibly connected between the PCB board and the sound inlet unit. The microphone converts the sound signal from the acquisition blade into an electrical signal and transmits it to the PCB board. The PCB board amplifies, filters, and suppresses the electrical signal before converting it into a sound signal through the receiver. The sound is then amplified by a speaker and finally output to the user's ear canal. Because the microphone and receiver are located on the same straight line and face opposite directions, the secondary acquisition of the receiver's sound by the microphone can be avoided to the greatest extent.

Description

Technical Field

[0001] This utility model relates to the field of hearing aid technology, and in particular to a hearing aid structure with echo suppression effect. Background Technology

[0002] When the sound emitted by the receiver of a hearing aid is re-acquired by the microphone, an acoustic echo is formed, creating a signal transmission loop. This can lead to noise and feedback from the hearing aid. Modern hearing aids use digital signal processing technology to analyze the characteristics of the echo and emit corresponding cancellation signals to reduce it. Some advanced hearing aids use deep learning-based algorithms, such as end-to-end deep neural networks, to jointly suppress acoustic feedback, noise, and reverberation. This method can effectively preserve speech structure while suppressing echoes in complex acoustic environments.

[0003] However, the structural design of hearing aids on the market is unreasonable, and the vibration of the hearing aid during the amplification process is also transmitted to the receiver through the hearing aid shell. As a result, the microphone will still pick up the sound emitted by the receiver to a certain extent. This undoubtedly increases the signal processing burden of modern hearing aids, affects the performance of hearing aids to a certain extent, and increases the useless power consumption of hearing aids. To address this problem, this utility model discloses a hearing aid structure with echo suppression effect to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a hearing aid structure with echo suppression effect to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following solution to the aforementioned technical problems:

[0006] A hearing aid structure with echo suppression effect includes a shell and a cover, which are fastened together. A sound outlet unit is provided on the end face of the shell, and a sound inlet unit is provided on the end face of the cover. The sound outlet unit and the sound inlet unit are located on the same straight line.

[0007] The housing contains a PCB board, and a receiving component is flexibly connected between the PCB board and the sound outlet unit. A sound amplification component is flexibly connected between the PCB board and the sound inlet unit.

[0008] As a further embodiment of this utility model, the receiving component includes a first receiving position located on the inner wall of the middle part of the shell cover. The first receiving position is connected to the sound inlet unit. A first silicone sleeve is embedded in the first receiving position. A second receiving position is provided at the narrow end of the first silicone sleeve away from the first receiving position. A microphone is embedded in the second receiving position. A second silicone sleeve is fitted on the outer side of the microphone at the end away from the second receiving position.

[0009] As a further embodiment of this utility model, a first connecting post is fixedly connected to the end face of the second silicone sleeve, and a corresponding insertion hole is provided on the PCB board corresponding to the first connecting post.

[0010] As a further embodiment of this utility model, the amplification assembly includes a third receiving position located on the inner wall of the narrow end of the housing. The third receiving position is connected to the sound outlet unit. A third silicone sleeve is embedded in the third receiving position. A fourth receiving position is provided at the narrow end of the third silicone sleeve away from the third receiving position. A speaker is embedded in the fourth receiving position. A receiver is embedded at the narrow end of the speaker away from the fourth receiving position. A fourth silicone sleeve is fitted at the end of the receiver away from the speaker.

[0011] As a further embodiment of this utility model, a second connecting post is fixedly connected to the end face of the fourth silicone sleeve, and the second connecting post is interference-fitted into the insertion hole.

[0012] As a further embodiment of this utility model, the microphone and receiver are oriented in opposite directions and are both electrically connected to the PCB board, and the first silicone sleeve and the third silicone sleeve are both horn-shaped structures.

[0013] As a further embodiment of this utility model, a plurality of internally threaded cylinders are fixedly connected to the inner wall of the wide end of the housing. Each internally threaded cylinder is provided with a screw, and the threaded end of the screw passes through the PCB board and is threadedly connected to the internally threaded cylinder.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention relates to a hearing aid structure with echo suppression. The microphone converts the acoustic signal from the acquisition blade into an electrical signal and transmits it to the PCB board. The PCB board amplifies, filters, and suppresses the electrical signal before converting it into a sound signal through the receiver. The sound is then amplified by the speaker and finally output to the user's ear canal. Since the microphone and receiver are located on the same straight line and face opposite directions, the secondary acquisition of the receiver's sound by the microphone can be avoided to the greatest extent, reducing interference from airborne transmission. Furthermore, silicone sleeves are installed at both ends of the microphone and receiver, which can, to a certain extent, prevent the transmission of vibration force through the shell and cover, reducing interference from solid-borne sound and providing excellent echo suppression. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0017] Figure 1 This is a perspective view of a hearing aid structure with echo suppression effect according to the present invention.

[0018] Figure 2 This is a cross-sectional view of a hearing aid structure with echo suppression effect according to the present invention.

[0019] Figure 3 This is a structural diagram of the sound amplification component in a hearing aid structure with echo suppression effect according to this utility model;

[0020] Figure 4 This is a structural diagram of the receiving component in a hearing aid structure with echo suppression effect according to this utility model;

[0021] Figure 5 This utility model relates to a hearing aid structure with echo suppression effect. Figure 2 Enlarged view of the structure at point A in the image.

[0022] The attached diagram lists the components represented by each number as follows:

[0023] 1. Housing; 11. Sound outlet unit; 12. PCB board; 121. Socket; 13. Internal threaded cylinder; 14. Screw; 2. Housing cover; 21. Sound inlet unit; 3. Receiver assembly; 31. First receiving position; 32. First silicone sleeve; 33. Second receiving position; 34. Microphone; 35. Second silicone sleeve; 351. First connecting post; 4. Amplification assembly; 41. Third receiving position; 42. Third silicone sleeve; 43. Fourth receiving position; 44. Speaker tube; 45. Receiver; 46. Fourth silicone sleeve; 461. Second connecting post. Detailed Implementation

[0024] The present invention will be further described below with reference to the embodiments.

[0025] Please see Figure 1-5 This utility model provides a hearing aid structure with echo suppression effect, including a housing 1 and a cover 2, the housing 1 and the cover 2 are fastened together, a sound outlet unit 11 is provided on the end face of the housing 1, and a sound inlet unit 21 is provided on the end face of the cover 2, the sound outlet unit 11 and the sound inlet unit 21 are located on the same straight line.

[0026] Specifically, the edges of the housing 1 and the cover 2 are snapped together to provide a seal. Since the sound outlet unit 11 and the sound inlet unit 21 are located on the same straight line and face opposite directions, the sound of the receiver 45 can be avoided from being collected by the microphone 34 for the second time, thus reducing the interference of air transmission.

[0027] Furthermore, a PCB board 12 is installed inside the housing 1, and a plurality of internally threaded cylinders 13 are fixedly connected to the inner wall of the wide end of the housing 1. Each internally threaded cylinder 13 is provided with a screw 14, and the threaded end of the screw 14 passes through the PCB board 12 and is threadedly connected to the internally threaded cylinder 13.

[0028] Specifically, after the threaded end of the screw 14 passes through the corresponding hole on the PCB board 12, it is threadedly connected to the internal threaded cylinder 13, thereby fixing the PCB board 12. This ensures the stability and firmness of the PCB board 12 within the housing 1 and prevents the PCB board 12 from loosening or shifting due to vibration or external force.

[0029] Furthermore, a receiving component 3 is flexibly connected between the PCB board 12 and the sound outlet unit 11. The receiving component 3 includes a first receiving position 31 located on the inner wall of the middle part of the cover 2. The first receiving position 31 is connected to the sound inlet unit 21. A first silicone sleeve 32 is embedded in the first receiving position 31. A second receiving position 33 is provided at the narrow end of the first silicone sleeve 32 away from the first receiving position 31. A microphone 34 is embedded in the second receiving position 33. A second silicone sleeve 35 is sleeved on the outer side of the end of the microphone 34 away from the second receiving position 33.

[0030] Specifically, external sound enters the inside of the cover 2 through the sound inlet unit 21. The sound is guided by the first silicone sleeve 32 and enters the second receiving position 33 of the microphone 34. The microphone 34 converts the sound signal into an electrical signal, which can be transmitted to the PCB board 12.

[0031] Furthermore, a first connecting post 351 is fixedly connected to the end face of the second silicone sleeve 35, and a corresponding insertion hole 121 is opened on the PCB board 12 corresponding to the first connecting post 351;

[0032] Specifically, through an interference fit, the first connecting post 351 can be firmly embedded in the insertion hole 121, thereby tightly connecting the second silicone sleeve 35 to the PCB board 12.

[0033] Furthermore, a sound amplification component 4 is flexibly connected between the PCB board 12 and the sound inlet unit 21. The sound amplification component 4 includes a third receiving position 41 located on the inner wall of the narrow end of the housing 1. The third receiving position 41 is connected to the sound outlet unit 11. A third silicone sleeve 42 is embedded in the third receiving position 41. A fourth receiving position 43 is provided at the narrow end of the third silicone sleeve 42 away from the third receiving position 41. A speaker tube 44 is embedded in the fourth receiving position 43. A receiver 45 is embedded at the narrow end of the speaker tube 44 away from the fourth receiving position 43. A fourth silicone sleeve 46 is fitted at the end of the receiver 45 away from the speaker tube 44.

[0034] Specifically, the electrical signal is amplified, filtered, and echo-suppressed by the PCB board 12. The processed electrical signal is transmitted to the receiver 45, which converts the electrical signal into an audio signal and amplifies it through the speaker 44. The amplified audio signal is transmitted to the user's ear canal through the third silicone sleeve 42 and the sound outlet unit 11. The third silicone sleeve 42 and the fourth silicone sleeve 46 reduce the interference of the shell 1 vibration on the audio transmission through their elastic buffering effect.

[0035] Furthermore, a second connecting post 461 is fixedly connected to the end face of the fourth silicone sleeve 46, and the second connecting post 461 is interference-fitted into the insertion hole 121;

[0036] Specifically, through an interference fit, the second connecting post 461 can be firmly embedded in the insertion hole 121, thereby tightly connecting the fourth silicone sleeve 46 to the PCB board 12.

[0037] Furthermore, the microphone 34 and receiver 45 are oriented in opposite directions and are both electrically connected to the PCB board 12, and the first silicone sleeve 32 and the third silicone sleeve 42 are both horn-shaped structures.

[0038] Specifically, silicone has good elasticity, and the horn-shaped structure can buffer vibrations, thereby reducing interference from solid-borne sound transmission. The horn-shaped structure can better guide the direction of sound propagation, making the sound smoother when it enters the microphone 34 or is transmitted from the receiver 45, reducing sound reflection and scattering.

[0039] In operation, the microphone 34 converts the acoustic signal from the acquisition blade into an electrical signal and transmits it to the PCB board 12. The PCB board 12 amplifies, filters, and suppresses the electrical signal before converting it into an audio signal through the receiver 45. The audio signal is then amplified by the speaker 44 and finally output to the user's ear canal. Since the microphone 34 and receiver 45 are located on the same straight line and face opposite directions, the secondary acquisition of the audio signal from the receiver 45 by the microphone 34 can be avoided to the greatest extent, reducing interference from airborne transmission. Both ends of the microphone 34 and receiver 45 are fitted with silicone sleeves, which can to some extent prevent the transmission of vibration force between the housing 1 and the cover 2, reduce interference from solid-borne sound, and have excellent echo suppression effect.

Claims

1. A hearing aid structure with echo suppression effect, comprising a shell (1) and a shell cover (2), the shell (1) and the shell cover (2) are connected by snap-fit, the end face of the shell (1) is provided with a sound outlet hole unit (11), and the end face of the shell cover (2) is provided with a sound inlet hole unit (21), characterized in that, The sound outlet unit (11) and the sound inlet unit (21) are located on the same straight line; The housing (1) contains a PCB board (12), and a receiver component (3) is flexibly connected between the PCB board (12) and the sound outlet unit (11), and a sound amplification component (4) is flexibly connected between the PCB board (12) and the sound inlet unit (21).

2. A hearing aid structure with echo suppression effect according to claim 1, characterized in that: The receiving component (3) includes a first receiving position (31) located on the inner wall of the middle part of the shell (2). The first receiving position (31) is connected to the sound inlet unit (21). A first silicone sleeve (32) is embedded in the first receiving position (31). A second receiving position (33) is provided at the narrow end of the first silicone sleeve (32) away from the first receiving position (31). A microphone (34) is embedded in the second receiving position (33). A second silicone sleeve (35) is sleeved on the outer side of the end of the microphone (34) away from the second receiving position (33).

3. A hearing aid structure with echo suppression effect according to claim 2, characterized in that: The end face of the second silicone sleeve (35) is fixedly connected to the first connecting post (351), and the PCB board (12) is provided with a corresponding insertion hole (121) corresponding to the first connecting post (351).

4. A hearing aid structure with echo suppression effect according to claim 3, characterized in that: The amplification assembly (4) includes a third receiving position (41) located on the inner wall of the narrow end of the housing (1). The third receiving position (41) is connected to the sound outlet unit (11). A third silicone sleeve (42) is embedded in the third receiving position (41). A fourth receiving position (43) is provided at the narrow end of the third silicone sleeve (42) away from the third receiving position (41). A speaker tube (44) is embedded in the fourth receiving position (43). A receiver (45) is embedded at the narrow end of the speaker tube (44) away from the fourth receiving position (43). A fourth silicone sleeve (46) is fitted at the end of the receiver (45) away from the speaker tube (44).

5. A hearing aid structure with echo suppression effect according to claim 4, characterized in that: The end face of the fourth silicone sleeve (46) is fixedly connected to a second connecting post (461), and the second connecting post (461) is interference-fitted into the insertion hole (121).

6. A hearing aid structure with echo suppression effect according to claim 4, characterized in that: The microphone (34) and receiver (45) are oriented in opposite directions and are both electrically connected to the PCB board (12). The first silicone sleeve (32) and the third silicone sleeve (42) are both horn-shaped structures.

7. The hearing aid structure with echo suppression effect according to claim 1, characterized in that: Multiple internal threaded cylinders (13) are fixedly connected to the inner wall of the wide end of the housing (1). Each internal threaded cylinder (13) is provided with a screw (14). The threaded end of the screw (14) passes through the PCB board (12) and is threadedly connected to the internal threaded cylinder (13).

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