CN115348518A - Hearing aid capable of reducing noise - Google Patents

Abstract

The invention belongs to the field of hearing aids, and provides a hearing aid capable of reducing noise, which comprises: the hearing aid shell comprises a volute and a face shell, a playing hole unit is designed at the antenna end of the volute, and a sound receiving hole unit is designed on the face shell; the PCB is clamped and fixed in a containing position between the volute and the face shell and used for controlling the calculation operation of the hearing aid; the hearing aid capable of reducing noise has the advantages of being small and exquisite in structure, convenient to wear and good in concealment, obtained sound signals can be converted into electric signals to be monitored, waveform information of different sound sources can be generated automatically, the number of the sound sources can be screened out according to waveform characteristics within a proper hearing threshold range, main tones of the different sound sources are amplified reasonably, and overtones of the different sound sources are eliminated or weakened.

Description

Hearing aid capable of reducing noise

Technical Field

The invention relates to the field of hearing aids, in particular to a hearing aid capable of reducing noise.

Background

In brief, the sound generated by the vibration of the sounding body is transmitted to the sound-receiving body through a medium, which can be any object, such as air, wood, etc., and the sound-receiving body is an ear or hearing aid, and the sound has three characteristics: volume, tone and timbre, the characteristics of sound waves include amplitude, frequency and phase, wherein amplitude determines loudness, frequency determines tonality, the overall characteristics of sound waves determine timbre, the sound received by the ear is a mixture of various sound waves which includes a main sound and an overtone, the overtone is other sound waves of various frequencies and amplitudes which accompany it, and the overtone and the main sound are fused, and actually, the frequency and the amplitude of the sound waves are not constant and are abstracted on a waveform diagram, or the sound is not a curve of fixed amplitude and fixed frequency.

The hearing aid is a sound amplifying device for helping the hearing-impaired to improve the hearing ability, so that the speech communication ability is improved, along with the development of the microelectronic technology, the hearing aid is gradually miniaturized, all patients with residual hearing can be matched with the hearing aid except for no medically unfavorable symptoms, the hearing aid can be improved to a certain degree by wearing the hearing aid, the communication and the study are facilitated, the limitation of various factors is also caused, and the higher research, development and design requirements are provided for breaking through the hearing restriction of the hearing aid and approaching the modern hearing aid.

The elimination of hearing aid noise is an important research and development subject for hearing aid wearing, noise is uncomfortable sound, generally aperiodic sound vibration, irregular vibration, noise feeling when hearing, mostly concentrated on low frequency, and analog hearing aids are limited by the working principle of the analog hearing aids.

SUMMARY OF THE PATENT FOR INVENTION

In view of the defects in the prior art, the invention provides a hearing aid capable of reducing noise so as to weaken the influence of the noise of the hearing aid on a hearing-impaired patient.

In accordance with a preferred embodiment of the present invention, there is provided a hearing aid capable of reducing noise, comprising:

the hearing aid shell comprises a volute and a face shell, wherein a sound receiving hole unit is designed on the face shell, a sound releasing hole unit is designed at an antenna end of the volute, and an expanded earplug is sleeved outside the antenna end of the volute;

the PCB is clamped and fixed in a containing position between the volute and the face shell and used for controlling the calculation operation of the hearing aid;

the hearing aid modules are arranged on the upper side and the lower side of the PCB and further comprise an audio receiving device, a loudspeaker and an amplifier, wherein the audio receiving device is connected to the input end of the amplifier; and

the digital feedback module is arranged in the PCB and is electrically connected with the audio receiving device and the amplifier;

wherein the digital feedback module further comprises:

frequency monitoring unit, resistance module and simulation sound production module, the frequency monitoring unit obtains the current fluctuation numerical value and transmits to the PCB board, simulation sound production module is used for simulating the sound production electric current.

Further, still include:

the power supply module is arranged in the volute and covers the lower portion of the PCB, and the power supply module is electrically connected with two power connection column heads.

Furthermore, the electric pole head is composed of a conductive pole and a plastic ring fixed on the outer side of the conductive pole in a hot melting mode, the electric pole head extends out of the hearing aid shell to be matched with the charging structure, and the plastic ring is arranged in the hearing aid shell in a limiting mode.

Furthermore, the audio receiving device, the power supply module and the resistance module jointly form a detection loop, and the frequency monitoring unit is connected with the resistance module in parallel.

Furthermore, the volute edge is provided with at least one fastening insertion column, the edge of the face shell is provided with the same number of insertion holes corresponding to the fastening insertion columns, and the fastening insertion columns are in interference fit with the insertion holes.

Furthermore, the port of the loudspeaker is sleeved with a sound extension tube which extends to the position corresponding to the playing hole unit.

Furthermore, the audio receiving device is arranged in a groove on the upper side of the PCB, and the audio receiving device is attached to the sound receiving hole unit.

Furthermore, still be provided with at least one touch button on the PCB board, sliding connection is with the pressure sensing button that sets up with different touch buttons relatively on the face-piece.

Further, the audio receiving device may be any one of an ANC microphone, a condenser microphone, or an electric microphone.

A method of reducing noise in a hearing aid for reducing noise, comprising the steps of:

(1) The audio receiving device converts the received air vibration into an electric signal, and the frequency monitoring unit monitors the change of the number value of the electric signal;

(2) The frequency monitoring unit transmits the acquired complex sound source amplitude and vibration frequency information to the PCB;

(3) Firstly, intercepting the amplitude of a sound source within a hearing threshold range by the PCB, analyzing to obtain sound sources with different numbers according to different wave frequency information within the amplitude threshold, and analyzing to obtain the main tone and the overtone of the sound sources;

(4) And the PCB rejects the overtone signal of the pre-played sound source, reduces the multiple of the main sound signal and transmits the main sound signal to the loudspeaker for playing.

According to the technical scheme, the hearing aid capable of reducing noise has the characteristics of small and exquisite structure, convenience in wearing and good concealment, can convert an obtained sound signal into an electric signal for monitoring, so that waveform information of different sound sources can be automatically generated, a certain number of sound sources can be screened out according to waveform characteristics within a proper hearing threshold range, main sounds of the different sound sources are reasonably amplified, overtones of the different sound sources are eliminated or weakened, the distinctiveness of sound simulation can be improved, language alternating noise is reduced, and the hearing ability of hearing-impaired patients is enhanced.

Drawings

In order to more clearly illustrate the patentable embodiments of the invention, reference will now be made to the appended drawings, which are briefly described as embodiments or as required in the prior art description. In all the drawings, the elements or parts are not necessarily drawn to actual scale.

Fig. 1 is an external view of a preferred embodiment of a hearing aid for reducing noise according to the present invention;

fig. 2 is a first exploded view of a preferred embodiment of a noise-reducing hearing aid according to the present invention;

fig. 3 is a second exploded view of a preferred embodiment of a noise-reducing hearing aid according to the present invention;

fig. 4 is an exploded view of a preferred embodiment of a hearing aid according to the present invention with reduced noise;

fig. 5 is a diagram of a detection circuit of a preferred embodiment of a hearing aid for reducing noise according to the present invention;

fig. 6 is a schematic diagram of a sound-simulating module of a preferred embodiment of a hearing aid for reducing noise according to the present invention;

fig. 7 is a schematic diagram of a sinusoidal waveform of a preferred embodiment of a hearing aid for noise reduction according to the present invention.

Reference numerals: the hearing aid comprises a hearing aid shell 1, a volute 11, a playing hole unit 111, an expanded earplug 112, a buckling inserted column 113, a face shell 12, a sound receiving hole unit 121, an inserted hole 122, a pressure sensitive key 123, a PCB (printed circuit board) 2, a touch button 21, a hearing aid module 3, an audio receiving device 31, a loudspeaker 32, a sound delaying cylinder 321, an amplifier 33, a digital feedback module 4, a frequency monitoring unit 41, a resistance module 42, an analog sounding module 43, a power supply module 5, a column connector contact 51, a conductive column 511 and a plastic ring 512.

Detailed Description

Embodiments of the patented technology of the present invention will be described in detail below with reference to the drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only used as examples, and the protection scope of the present invention is not limited thereby.

Example (b):

as shown in fig. 1 to 7, the present embodiment provides a hearing aid capable of reducing noise, including:

the hearing aid shell 1 comprises a volute 11 and a face shell 12, wherein a sound receiving hole unit 121 is designed on the face shell 12, a seeding hole unit 111 is designed at an antenna end of the volute 11, and an expanded earplug 112 is further sleeved outside the antenna end of the volute 11;

at least one PCB board 2, wherein the PCB board 2 is clamped and fixed in a containing position between the volute casing 11 and the face casing 12 for controlling the calculation operation of the hearing aid;

at least one hearing aid module 3, wherein the hearing aid modules 3 are arranged on the upper side and the lower side of the PCB 2, the hearing aid module 3 further comprises an audio receiving device 31, a loudspeaker 32 and an amplifier 33, and the audio receiving device 31 is connected with the input end of the amplifier 33; and

at least one digital feedback module 4, wherein the digital feedback module 4 is arranged in the PCB 2 and is electrically connected with the audio receiving device 31 and the amplifier 33;

wherein the digital feedback module 4 further comprises:

frequency monitor cell 41, resistance module 42 and simulation sound production module 43, frequency monitor cell 41 acquires the current fluctuation numerical value and transmits to PCB board 2, simulation sound production module 43 is used for simulating the phonation electric current.

The middle part of the expanded earplug 112 is provided with a round notch, the outer side of the antenna end of the volute 11 is provided with an annular groove corresponding to the round notch and used for limiting the expanded earplug 112, the expanded earplug 112 is made of plastic or silica gel materials, optionally, the expanded earplug 112 is in a bowl-mouth-shaped structure and can be completely filled with the ear canal under the combined action of the bowl-mouth shape and material characteristics, so that noise is prevented from being transmitted into the ear canal, optionally, the expanded earplug 112 is an annular sealing body, inert gas is sufficiently filled in the expanded earplug 112, and the ear canal can be completely filled with the expanded earplug 112 by utilizing the plasticity of the gas and the elastic materials; when the noise reduction hearing aid operates, the audio receiving device 31 receives sound signals and converts the sound signals into electric signals, after the signals are amplified by the amplifier 33, the frequency monitoring unit 41 detects the change of the electric signals and uploads the information to the PCB 2, the PCB 2 intelligently analyzes and discriminates sound source information, the analog sound production module 43 reversely simulates main body current information of a sound source, and the loudspeaker 32 simulates sound production.

Further, still include:

at least one power module 5, power module 5 is set up in spiral case 11 and covers and establish in PCB board 2 below, power module 5 electric connection has two to connect electric column cap 51, and power module 5 is preferably button cell, can provide electric power for the audiphone operation, is provided with the position of holding of placing power module 5 in the spiral case 11, can effectively spacing power module 5 can not rock, and face-piece 12, PCB board 2, power module 5 and spiral case 11 extrude range upon range of in proper order, and is fixed effectual, can more avoid the production of audiphone noise itself.

Further, the power connection column head 51 is composed of a conductive column 511 and a plastic ring 512 fixed on the outer side of the conductive column 511 in a hot melting manner, the power connection column head extends out of the hearing aid housing 1 to form a matching charging structure, the plastic ring 512 is arranged in the hearing aid housing 1 in a limiting manner, the end portion of the conductive column 511 is pressed against the lower side of the PCB 2, the other end of the conductive column 511 penetrates through a reserved hole in the volute 11, the reserved hole is of a double-layer stepped structure, the wider portion of the reserved hole is matched with the shape of the plastic ring 512, the position of the conductive column 511 can be effectively limited, the conductive column 51 is prevented from being separated, a flared ring is arranged on the outer side of the narrower portion, and the conductive column 511 can be hidden in the flared ring and cannot protrude out of the volute 11 to cause discomfort.

Further, the audio receiving device 31, the power supply module 5 and the resistance module 42 together form a detection loop, the frequency monitoring unit 41 is connected in parallel with the resistance module 42, the power supply module 5 provides power for the audio receiving device 31, and the audio receiving device 31 converts a sound signal into an electrical signal and transmits the electrical signal to the resistance module 42 for detecting information of the electrical signal; the frequency monitoring unit 41 can be a voltage detection circuit, and calculates the current value after measuring the voltage value on the standard resistance module 42, the method has a large range from nanoampere to tens of amperes, the accuracy is high, the direct current can reach several parts per million, and the low frequency can reach several parts per million.

Furthermore, the edge of the volute casing 11 is provided with at least one fastening insertion column 113, the edge of the face casing 12 corresponding to the fastening insertion column 113 is provided with the same number of insertion holes 122, the fastening insertion column 113 is in interference fit with the insertion holes 122, preferably, the number of the fastening insertion columns 113 is 3, the fastening insertion columns 113 are uniformly distributed on the edge of the volute casing 11, each part of the volute casing 11 and the face casing 12 can be tightly attached, the outer wall of the bottom end of the fastening insertion column 113 is provided with an expanded part, the insertion holes 122 corresponding to the expanded part are provided with a convex ring structure, when the fastening insertion column 113 is inserted into the insertion hole 122, the convex ring structure expands and deforms under the extrusion action of the expanded part, after the expanded part completely passes through the convex ring structure, the convex ring structure is reset under the action of the elastic force of the convex ring structure, the function of limiting the expanded part is achieved, and the connection strength of the volute casing 11 and the face casing 12 can be guaranteed.

Further, 32 port cover of megaphone is equipped with an extension sound tube 321, extension sound tube 321 extends to and plays the corresponding position of hole unit 111 all the time, and extension sound tube 321 one end interference nestification is in 32 port outsides of megaphone, and another port and play hole unit 111 are sealed to be laminated, and play hole unit 111 has at least one play hole to constitute for propagate the air vibration, as preferred, extension sound tube 321 is the narrow structure in the preceding broad back of loudspeaker form, and extension sound tube 321 inner wall coating has compact metal coating, can play certain public address effect.

Furthermore, the audio receiving device 31 is arranged in a groove on the upper side of the PCB 2, the audio receiving device 31 is attached to the sound receiving hole unit 121, and the groove is matched with the bottom shape of the audio receiving device 31, so that the audio receiving device 31 cannot easily shift, and the assembly process is simplified; the sound receiving hole unit 121 is formed of at least one sound receiving hole for transmitting air vibration, and preferably, a dense metal mesh is provided in the sound receiving hole, thereby providing excellent dust and wind prevention effects.

Further, at least one touch button 21 is further disposed on the PCB 2, the face shell 12 is slidably connected to a pressure sensing key 123 disposed opposite to different touch buttons 21, the touch buttons 21 at least include a mode switching button for adjusting a threshold range of the hearing aid for amplitude selection, an adjustment interval is between 0.5 and 1.0 decibels, and an adjustment level is less than 4 levels; the pressure sensing key 123 is composed of a key body and an elastic tentacle fixedly connected to the edge of the key body, and the elastic tentacle is fixed on the inner wall of the face shell 12 in a hot melting mode, so that the pressure sensing key 123 can be easily reset after being pressed and deformed.

Further, the audio receiving device 31 is any one of an ANC microphone, a condenser microphone or an electrodynamic microphone, and the microphone can sense air vibration and convert the air vibration into current fluctuation, so as to convert the sound signal into an electrical signal.

The working principle is as follows: a method of reducing noise in a hearing aid for reducing noise, comprising the steps of:

(1) The audio receiving device 31 converts the received air vibration into an electrical signal, the frequency monitoring unit 41 monitors the change of the electrical signal, the sound is vibration, when the sound changes the pressure of the air on the eardrum of the audio receiving device 31, the audio receiving device 31 can sense the vibration and convert the vibration into current, and similarly, the current is converted into the sound through the loudspeaker 32;

(2) Frequency monitoring unit 41 will acquire complicated sound source amplitude, the transmission of vibration frequency information to PCB board 2, the sound that audiphone received has fused the compound body of various sound waves, and the sound wave characteristic including: the amplitude, the frequency and the phase are changed into an X axis and an Y axis along with time, the waveform curve of the sound source is equal to a sine pattern, the sine pattern is in a continuous replacement process along with the time change in constant time, so that sine patterns with sound wave characteristics and sine coordinates of different sound signals at different time points are obtained, and the coordinates and the time points are recorded by the PCB 2 to be processed;

(3) Firstly intercepting the sound source amplitude within a hearing threshold range by the PCB 2, intercepting the sound source amplitude threshold range within a sine graph Y-axis range, taking values within 1-65 decibels, automatically eliminating sound signals below the decibel range, recording the sound signals above the decibel range by a maximum threshold signal, analyzing and obtaining sound sources with different numbers according to different wave frequency information within the amplitude threshold, basically enabling sine graphs of the same wave frequency information to be consistent on the change time point of an X-axis, obtaining the number of the sound sources similar to the wave frequency, sequentially numbering 1/2/3/4, distinguishing the sound information within the sound sources similar to the wave frequency according to the amplitude, analyzing and obtaining main tones and overtones of the sound sources, and classifying the sound sources into different sound source signals according to the amplitude;

(4) The overtone signal of PCB board 2 will broadcast the sound source in advance is rejected, reduce the master tone signal multiple and transmit to megaphone 32 and broadcast, refer to with the maximum amplitude signal of same time point and all the other amplitude signals, the ratio is between 1-2, with the ratio output in same proportion, the ratio is greater than 2, the output of little amplitude signal minification ratio, this minification ratio can be half of former amplitude scope, the ratio is greater than 5, then little amplitude signal does not carry out the output, produce the ripple current by simulation sound production module 43, megaphone 32 broadcasts the amplitude signal after handling, the decibel volume of sound can be effectively controlled like this, make the bass can not the undersize, the high pitch can not be too big, and the rejection has weakened the overtone influence, make the master tone more flood clear, the bigger degree is superior to human normal hearing.

In the description of the present patent application, numerous specific details are set forth. However, it is understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present patent. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.

The above examples are only used to illustrate the technical solutions of the present invention, but not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; the modifications or substitutions do not make the essence of the corresponding technical solution depart from the scope of the technical solutions of the embodiments of the patent of the present invention, and the technical solutions are all covered in the claims and the specification of the patent of the present invention.

Claims (10)

1. A hearing aid with reduced noise, comprising:

the hearing aid shell comprises a volute and a face shell, wherein a sound receiving hole unit is designed on the face shell, a seeding hole unit is designed at an antenna end of the volute, and an expanded earplug is further sleeved outside the antenna end of the volute;

the PCB is clamped and fixed in a containing position between the volute and the face shell and used for controlling the calculation operation of the hearing aid;

the hearing aid modules are arranged on the upper side and the lower side of the PCB and further comprise an audio receiving device, a loudspeaker and an amplifier, wherein the audio receiving device is connected to the input end of the amplifier; and

the digital feedback module is arranged in the PCB and is electrically connected with the audio receiving device and the amplifier;

wherein the digital feedback module further comprises:

frequency monitor cell, resistance module and simulation sound production module, the frequency monitor cell acquires current fluctuation numerical value and transmits to the PCB board, simulation sound production module is used for simulating sound production electric current.

2. A hearing aid with noise reduction according to claim 1, further comprising:

the power supply module is arranged in the volute and covers the lower portion of the PCB, and the power supply module is electrically connected with two power connection column heads.

3. The hearing aid according to claim 2, wherein the electrical post head comprises a conductive post and a plastic ring thermally fixed on the outer side of the conductive post, the electrical post head extends out of the hearing aid housing to fit the charging structure, and the plastic ring is disposed in the hearing aid housing in a limited manner.

4. A hearing aid with noise reduction according to claim 1, wherein the audio receiver, the power supply module and the resistor module together form a detection loop, and the frequency monitoring unit is connected in parallel with the resistor module.

5. A hearing aid with noise reduction according to claim 1, wherein the edge of the volute is provided with at least one snap-fit stud, the edge of the face shell is provided with the same number of plug holes corresponding to the snap-fit studs, and the snap-fit studs are in interference fit with the plug holes.

6. A hearing aid with noise reduction according to claim 1, wherein the microphone port is sleeved with a sound extension tube, and the sound extension tube extends to a position corresponding to the play hole unit.

7. The hearing aid for reducing noise according to claim 1, wherein the audio receiver is disposed in a recess on an upper side of the PCB, and the audio receiver is attached to the sound receiving hole unit.

8. The hearing aid for reducing noise according to claim 1, wherein the PCB board further comprises at least one touch button, and the face housing is slidably coupled to the pressure sensitive keys opposite to the different touch buttons.

9. A hearing aid with noise reduction according to claim 1, wherein the audio receiving device is any one of an ANC microphone, a condenser microphone or an electrodynamic microphone.

10. A method of reducing noise in a hearing aid for reducing noise, comprising the steps of:

(1) The audio receiving device converts the received air vibration into an electric signal, and the frequency monitoring unit monitors the change of the number value of the electric signal;

(2) The frequency monitoring unit transmits the acquired amplitude and vibration frequency information of the complex sound source to the PCB;

(3) Firstly, intercepting the amplitude of a sound source within a hearing threshold range by the PCB, analyzing to obtain sound sources with different numbers according to different wave frequency information within the amplitude threshold, and analyzing to obtain the main tone and the overtone of the sound sources;

(4) The PCB plate eliminates the overtone signals of the pre-played sound source, reduces the multiple of the main sound signals and transmits the main sound signals to the loudspeaker for playing.

Images