TWI686795B - Filter structure for hearing aid and hearing aid with filter structure - Google Patents

Abstract

The hearing aid with a filtering structure of the present invention includes: a housing having a first end And a second end, and the housing has an internal space, and defines an active filter section close to the first end of the case according to the position, and a passive filter section close to the second end of the case, and the The shell is detachably installed in the external auditory meatus of a user, and the second end of the shell extends toward the external auditory meatus; a sound collecting area is arranged at the first end of the shell The sound area is provided with a plurality of through holes; a filter structure is provided in the active filter section of the casing; and an audio processing module is provided in the passive filter section of the casing.

Description

Filter structure for hearing aid and hearing aid with filter structure

The invention relates to hearing aids, in particular to a hearing aid with a filtering structure.

According to the press, traditional hearing aids mainly include microphones, amplifiers and speakers. The microphones are used to receive external sounds and convert them into sound source signals. The sound source signals are then amplified through the amplifier. Finally, the amplified sound source signals are converted from the speakers into Sound waves are transmitted into the ear. However, this type of hearing aid, which is only used to amplify the external sound, also amplifies various noises contained in the external sound. In addition to the noisy environment, it is not easy to clearly hear the other party's voice, and after the user wears it for a long time It is easy to seriously affect the mood or quality of life due to noise, and it is indeed necessary to improve it.

The main object of the present invention is to provide a hearing aid with a filtering structure, which uses a filtering structure to physically filter out noise sources to achieve the effect of active sound absorption filtering.

The reason is that, in order to achieve the above object, the hearing aid with a filtering structure provided by the present invention includes: a housing having a first end and a second end, and the housing has an internal space and depends on the location An active filter section and a passive filter section are defined, the active filter section is close to the first end of the housing, the passive filter section is close to the second end of the housing, and the housing is for detachable It is installed in the external auditory meatus of a user, and the second end of the housing extends toward the external auditory meatus; a sound collecting area is located at the first end of the housing, and the sound collecting area is provided with a plurality of transparent A filter structure is provided in the active filter section of the casing; and an audio processing module is provided in the passive filter section of the casing.

In addition, the present invention provides another filtering structure for a hearing aid. The hearing aid has a housing, a plurality of microphones, a voice signal processing chip and a speaker. The housing has a first end and a second end. The housing is for detachable installation in the external auditory meatus of a user, and the second end of the housing extends toward the external auditory meatus. The microphones are arranged at the first end of the housing. The microphone is electrically connected to the voice signal processing chip, and the speaker is electrically connected to the voice signal processing chip. The filter structure includes: a cover having an internal space. The cover is provided on the housing At one end, the microphones are isolated from the external environment; a sound collecting area is provided on the cover, the sound collecting area is provided with a plurality of through holes; a sound absorbing layer is provided on the inner wall surface of the cover; A microporous layer disposed on the surface of the sound absorbing layer, the microporous layer having a plurality of perforations penetrating through the microporous layer; and a plurality of convex portions disposed on the microporous layer at intervals Each of the convex portions extends from the microporous layer toward the center of the inner space of the housing; wherein the through holes are used for an external sound to penetrate through the housing and enter the inner space, and the external The sound includes a main sound source and a noise sound source, and the noise sound source is filtered by the convex portions and the sound absorption layer, so that the microphones receive the main sound source and convert it into a sound source signal After that, the audio source signal is passed to the voice signal processing chip for processing and then played through the speaker.

Please refer to the first to fifth figures. The hearing aid with a filtering structure provided in the first embodiment of the present invention includes: a housing 10 having a first end 11 and a second end 12, and the housing 10 has an internal space 13, and defines an active filter section 14 and a passive filter section 15 according to the position, the active filter section 14 is close to the first end 11 of the housing 10, the The passive filter section 15 is close to the second end 12 of the housing 10, and the housing 10 is for detachable installation in a user's external auditory meatus, and the second end 12 of the housing 10 faces the Extends in the external auditory meatus; a sound collecting area 16 is provided at the first end 11 of the housing 10, the sound collecting area 16 is provided with a plurality of through holes 161; a filter structure 20 is provided at the housing 10 for active filtering Section 14; and an audio processing module 30 are provided in the passive filtering section 15 of the housing 10. In this example, the shape of the housing 10 is optimized for the length of the processed sound transmitted to the eardrum, and the second end 12 of the housing 10 is composed of a skin-friendly cushion material to provide use The best wearer experience.

The filtering structure 20 includes: a sound absorbing layer 21 disposed on the inner wall surface of the active filtering section 14 of the housing 10; and a microporous layer 22 disposed on the surface of the sound absorbing layer 21 and the microporous layer 22 There are a plurality of perforations 221 which penetrate the microporous layer 22; and a plurality of convex portions 23 which are arranged on the microporous layer 22 at intervals from each other, and each of the convex portions 23 is derived from the microporous layer 22 extends toward the center of the internal space 13 of the housing 10. In this example, the sound absorbing layer 21 is any one selected from the group consisting of glass wool, rock wool, foam, mineral wool, and cotton fiber. In other embodiments, the sound absorbing layer 21 may also have a structure with at least one hollow chamber. In addition, the convex portions 23 are arranged regularly or irregularly, and at least one convex portion 23 is provided between two adjacent through holes 221 on the microporous layer 22.

The audio processing module 30 includes: a plurality of microphones 31 disposed in the internal space 13 of the housing 10 and located in the passive filter section 15; and a voice signal processing chip 32 disposed in the internal space of the housing 10 13 and located in the passive filter section 15, and the microphones 31 are electrically connected to the voice signal processing chip 32; and a speaker 33 is disposed in the inner space 13 of the housing 10 and located in the passive filter section 15. The speaker 33 is electrically connected to the voice signal processing chip 32.

In use, the through holes 161 are used for an external sound to penetrate the casing 10 and enter the internal space 13 of the casing 10, and the external sound includes a main sound source and a noise source, And the noise source is filtered by the convex portions 23 and the sound absorbing layer 21. In detail, please refer to the third figure, when external sound enters the internal space 13 of the housing 50 through the through holes 161, the convex portion 23 is directed from the micro-porous layer 22 toward the internal space 13 of the housing 50 The central direction extends, so that the sound wave of the external sound hits the convex portion 23 to cause reflection and collision, which causes the sound wave to be attenuated; Absorbed. In this way, the present invention filters out noise sources through the aforementioned physical properties to achieve the effect of active sound absorption filtering.

Finally, after the microphones 31 receive the main sound source and convert it into a sound source signal, the sound source signal is passed to the voice signal processing chip 32 for processing and then played through the speaker 33. In this example, the voice signal processing chip 32 can further perform multi-channel signal processing on the main sound source, so that the user can have an optimized communication experience. In other embodiments, the voice signal processing chip 32 may also have a digital passive filtering function.

As shown in the sixth figure, this is the second embodiment of the present invention. The main difference from the first embodiment is that it further includes a guiding structure, which is disposed on the inner wall of the housing 10 facing the sound collecting area 16 Position, and the guiding structure is used to guide the direction of the external sound transmission. In this example, the guiding structure is a spiral structure.

As shown in the seventh to ninth figures, it is a filter structure for a hearing aid provided in a third embodiment of the present invention. The main difference from the first embodiment is that the microphones 31 are arranged in the housing 10 At one end 11, in this example, the microphones 31 are set on the housing 10 at different tilt angles to collect sounds of different distances and times. In addition, this example further includes a cover 50 having an internal space 51 and used to cover the first end 11 of the housing 10 and isolate the microphones 31 from the external environment. In addition, the sound collection area 52 is provided on the cover 50, the sound collection area 52 is provided with a plurality of through holes 521, the sound absorbing layer 21 is provided on the inner wall surface of the cover 50, and the microporous layer 22 is similarly provided A plurality of protrusions 23 are provided on the surface of the sound absorbing layer 21 and on the surface of the microporous layer 22. In this way, the cover 50 can be quickly assembled on the existing hearing aid to achieve the effect of active filtering.

10: Shell

11: the first end

12: Second end

13: interior space

14: Active filtering section

15: Passive filter section

16: Collection area

161: Through hole

20: filter structure

21: Sound-absorbing layer

22: microporous layer

221: Piercing

23: convex part

30: Audio processing module

31: Microphone

32: Voice signal processing chip

33: Speaker

40: Guide structure

50: cover

51: interior space

52: sound collection area

521: Through hole

The first figure is a perspective schematic view of the first embodiment of the present invention. The second picture is a side view of the first picture. The third picture is another side view of the first picture. The fourth figure is a cross-sectional view taken along section line 4-4 of the first figure. The fifth diagram is a partially enlarged view of the fourth diagram. The sixth figure is a cross-sectional view of a second embodiment of the present invention. The seventh figure is a combined perspective view of a third embodiment of the present invention. The eighth figure is an exploded perspective view of the seventh figure. The ninth figure is a sectional view taken along line 9-9 of the seventh figure.

10: Shell

11: the first end

12: Second end

13: interior space

14: Active filtering section

15: Passive filter section

16: Collection area

161: Through hole

20: filter structure

21: Sound-absorbing layer

22: microporous layer

221: Piercing

23: convex part

30: Audio processing module

31: Microphone

32: Voice signal processing chip

33: Speaker

Claims (8)

A hearing aid with a filtering structure includes: a housing having a first end and a second end, and the housing has an internal space, and defines an active filtering section and a passive filtering area according to the position Segment, the active filter section is close to the first end of the housing, and the passive filter section is close to the second end of the housing, and the housing is used for detachable installation in a user's external ear canal, And the second end of the shell extends toward the external auditory meatus; a sound collection area is provided at the first end of the shell, the sound collection area is provided with a plurality of through holes; a filter structure is provided at the shell The active filter section of the body includes: a sound absorbing layer disposed on the inner wall surface of the active filter section of the housing; a microporous layer disposed on the surface of the sound absorbing layer, the microporous layer having a plurality of Perforation, the perforations penetrate through the microporous layer; and a plurality of convex portions, which are arranged on the microporous layer at intervals, and each of the convex portions extends from the microporous layer toward the center of the inner space of the housing And an audio processing module, which is provided in the passive filtering section of the casing, and includes: a plurality of microphones, which are arranged in the internal space of the casing and located in the passive filtering section; a voice signal processing chip, It is arranged in the inner space of the casing and located in the passive filtering section, and the microphones are electrically connected to the voice signal processing chip; and a speaker is arranged in the inner space of the casing and located in the passive filtering area And the speaker is electrically connected to the voice signal processing chip; wherein the through holes are used for an external sound to penetrate through the casing and enter the internal space of the casing, and the external sound includes a main sound Source and a noise source, and the noise source is filtered by the convex portions and the sound absorbing layer, so that the microphones receive the main sound source and convert it into a sound source signal, and then the sound source The signal is passed to the voice signal processing chip and processed through the speaker for playback. The hearing aid with a filtering structure as described in item 1 of the scope of the patent application further includes a guiding structure, which is arranged at a position of the inner wall of the housing facing the sound collecting area, and the guiding structure is used for Guide the direction of this external sound transmission. The hearing aid with a filtering structure as described in item 1 or 2 of the patent application scope, wherein the convex portions are arranged regularly or irregularly, and there is at least one convex between two adjacent perforations on the microporous layer unit. The hearing aid with a filtering structure as described in Item 3 of the patent application scope, wherein the sound absorbing layer is selected from any group consisting of glass wool, rock wool, foam, mineral wool, and cotton fiber. A filter structure for a hearing aid. The hearing aid has a casing, a plurality of microphones, a voice signal processing chip and a speaker. The casing has a first end and a second end. Removably installed in the external auditory meatus of a user, and the second end of the housing extends toward the external auditory meatus, the microphones are disposed at the first end of the housing, the microphones and the voice signal processing chip Electrically connected, and the speaker is electrically connected to the voice signal processing chip, the filter structure includes: a cover with an internal space, the cover is located at the first end of the housing, and the The microphone is isolated from the external environment; a sound collecting area is provided on the cover, the sound collecting area is provided with a plurality of through holes; a sound absorbing layer is provided on the inner wall surface of the cover; a microporous layer is provided On the surface of the sound absorbing layer, the microporous layer has a plurality of perforations which penetrate the microporous layer; and a plurality of convex portions which are arranged on the microporous layer at intervals from each other, each of the convex portions is Extending from the microporous layer toward the center of the inner space of the housing; wherein the through holes are used for an external sound to penetrate the housing and enter the internal space, and the external sound includes a main sound source and A noise source, and the noise source is filtered by the convex portions and the sound absorbing layer, so that the microphones receive the main sound source and convert it into a source signal, and then the source signal After being processed by the voice signal processing chip, it is played through the speaker. The filtering structure for hearing aids as described in item 5 of the scope of the patent application, which further includes a guiding structure, which is arranged at a position of the inner wall of the housing facing the sound collecting area, and the guiding structure is used To guide the direction of the external sound transmission. The filter structure for hearing aids as described in item 5 or 6 of the patent application scope, wherein the convex portions are arranged regularly or irregularly, and there is at least one between two adjacent perforations on the microporous layer Convex part. The filter structure for hearing aids as described in item 7 of the patent application scope, wherein the sound absorbing layer is selected from any group consisting of glass wool, rock wool, foam, mineral wool, and cotton fiber.

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