CN115334435A - Hearing assisting device - Google Patents

Hearing assisting device Download PDF

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Publication number
CN115334435A
CN115334435A CN202210742765.7A CN202210742765A CN115334435A CN 115334435 A CN115334435 A CN 115334435A CN 202210742765 A CN202210742765 A CN 202210742765A CN 115334435 A CN115334435 A CN 115334435A
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CN
China
Prior art keywords
sound
assistance device
hearing assistance
vibration
frequency
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CN202210742765.7A
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Chinese (zh)
Inventor
李伯诚
闫冰岩
唐惠芳
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Shenzhen Voxtech Co Ltd
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Shenzhen Voxtech Co Ltd
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Priority to CN202210742765.7A priority Critical patent/CN115334435A/en
Publication of CN115334435A publication Critical patent/CN115334435A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/50—Customised settings for obtaining desired overall acoustical characteristics
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2460/00—Details of hearing devices, i.e. of ear- or headphones covered by H04R1/10 or H04R5/033 but not provided for in any of their subgroups, or of hearing aids covered by H04R25/00 but not provided for in any of its subgroups
    • H04R2460/13—Hearing devices using bone conduction transducers

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Neurosurgery (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Headphones And Earphones (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

The application discloses hearing assistance device, this hearing assistance device can include: a signal input module configured to receive an initial sound and convert the initial sound into an electrical signal; a signal processing module configured to process the electrical signal and generate a control signal; and at least one output transducer configured to convert the control signal into a bone-conducted sound wave of the user and an air-conducted sound wave that can be heard by the ear of the user, wherein, within a target frequency range, the air-conducted sound wave is delivered to the ear of the user such that the sound intensity of the air-conducted sound heard by the ear of the user is greater than the sound intensity of the initial sound received by the signal input module.

Description

Hearing assisting device
Technical Field
The present application relates to the field of acoustics, in particular to a hearing assistance device.
Background
Existing hearing assistance devices typically provide hearing compensation to a user through bone-conduction sound transmission or air-conduction sound transmission. In some hearing assistance devices (e.g., hearing aids), the bone conduction sound transmission method may cause insufficient intensity of vibration signals generated in certain frequency bands due to the performance of the bone conduction vibrator, so that the hearing compensation effect by the bone conduction method is not ideal. In addition, for conductive hearing impaired people, the traditional air conduction hearing aid has a large air conduction sound threshold difference in some frequency bands, which makes it difficult to compensate the hearing by air conduction, and this problem will result in poor listening experience for users when they need to hear sound in a wide frequency range or in multiple frequency bands.
Therefore, it is desirable to provide a hearing assistance device for hearing compensation in combination with bone conduction and air conduction, which can improve the hearing compensation effect of a user in a specific frequency band.
Disclosure of Invention
One of the embodiments of the present application provides a hearing assistance device, which includes: a signal input module configured to receive an initial sound and convert the initial sound into an electrical signal; a signal processing module configured to process the electrical signal and generate a control signal; and at least one output transducer configured to convert the control signal into a bone-conducted sound wave of the user and an air-conducted sound wave that can be heard by the ear of the user, wherein, within a target frequency range, the air-conducted sound wave is delivered to the ear of the user such that the sound intensity of the air-conducted sound heard by the ear of the user is greater than the sound intensity of the initial sound received by the signal input module.
In some embodiments, the target frequency range is 200Hz-8000Hz.
In some embodiments, the target frequency range is 500Hz-6000Hz.
In some embodiments, the target frequency range is 750Hz-1000Hz.
In some embodiments, the signal processing module comprises a signal processing unit comprising: a frequency division module configured to decompose the electrical signal into high-band and low-band components; a high frequency signal processing module coupled to the frequency division module and configured to generate a high frequency output signal from the high frequency band component; and a low frequency signal processing module coupled to the frequency division module and configured to generate a low frequency output signal from the low frequency component.
In some embodiments, the electric signal includes a high-frequency output signal corresponding to a mid-high-frequency-band component in the initial sound, and a low-frequency output signal corresponding to a mid-low-frequency-band component in the initial sound, and the signal processing unit includes: a high frequency signal processing module configured to generate a high frequency output signal from the high frequency band component; and a low frequency signal processing module configured to generate a low frequency output signal from the low frequency band component.
In some embodiments, the signal processing module further comprises a power amplifier configured to amplify the high frequency output signal or the low frequency output signal into the control signal.
In some embodiments, the output transducer comprises: a first vibration component electrically connected with the signal processing module to receive the control signal and generate the bone conduction sound wave based on the control signal; and the shell is coupled with the first vibration assembly and generates the air conduction sound wave under the driving of the first vibration assembly.
In some embodiments, the connection of the housing to the first vibratory assembly is a rigid connection.
In some embodiments, the housing and the first vibratory assembly are connected to the first vibratory assembly by a resilient member.
In some embodiments, the first vibration assembly comprises: a magnetic circuit system configured to generate a first magnetic field; a vibration plate connected to the case; and the coil is connected with the vibration plate and electrically connected with the signal processing module, the coil receives the control signal and generates a second magnetic field based on the control signal, and the first magnetic field and the second magnetic field interact with each other to enable the vibration plate to generate the bone conduction sound wave.
In some embodiments, the vibration plate and the housing define a cavity in which the magnetic circuit system is located, wherein the magnetic circuit system is connected to the housing by an elastic member.
In some embodiments, the bone conduction sound waves correspond to a vibration output force level greater than 55dB.
In some embodiments, at least one second vibration component may also be included that is configured to generate additional air conduction sound waves that enhance the sound intensity of the air conduction sound heard by the user's ear at the target frequency range.
In some embodiments, the at least one second vibration component is a diaphragm structure, the diaphragm structure being coupled to the housing, the at least one output transducer exciting the diaphragm structure to generate the additional air-borne sound waves.
In some embodiments, the at least one second vibration component is an air conduction speaker configured to generate the additional air conduction sound waves in accordance with the control signal.
In some embodiments, the hearing assistance device further comprises a fixation structure configured to carry the hearing assistance device such that the hearing assistance device is located at a mastoid, temporal bone, parietal bone, frontal bone, pinna, in the ear canal, or at the concha of the user's head.
One of the embodiments of the present application provides a hearing assistance device, which includes: a signal input module configured to receive an initial sound and convert the initial sound into an electrical signal; a signal processing module configured to process the electrical signal and generate a control signal; and at least one output transducer configured to convert the control signal into a bone conducted sound wave of the user and an air conducted sound wave that can be heard by the ear of the user, wherein the hearing assistance device includes an active state and an inactive state, the active state generates the air conducted sound wave, the inactive state does not generate the air conducted sound wave, and in a target frequency range, the sound intensity of the air conducted sound heard by the ear of the user in the active state is greater than the sound intensity of the air conducted sound heard by the ear of the user in the inactive state.
Drawings
The present application will be further explained by way of exemplary embodiments, which will be described in detail by way of the accompanying drawings. These embodiments are not intended to be limiting, and in these embodiments like numerals are used to indicate like structures, wherein:
fig. 1 is an exemplary frame schematic of a hearing assistance device provided according to some embodiments of the present application;
FIG. 2 is a block diagram of a signal processing unit provided in accordance with some embodiments of the present application;
FIG. 3 is a schematic diagram of an output transducer provided in accordance with some embodiments of the present application;
FIG. 4 is a graph of the full range force level (OFL 60) frequency response of the bone conduction component output in a reference acoustic environment for a hearing assistance device according to some embodiments of the present application;
FIG. 5 is a frequency response graph of full range acoustic-force sensitivity level (AMSL) of an output bone conduction component in a hearing assistance device reference environment provided in accordance with some embodiments of the present application;
FIG. 6 is a graph of sound pressure levels of components of air conduction output by a hearing assistance device in a reference environment according to some embodiments of the present application;
FIG. 7 is a graph of gain of output air conduction components in a reference environment for a hearing assistance device provided in accordance with some embodiments of the present application; and
fig. 8 is a position profile of a hearing assistance device as worn according to some embodiments of the present application.
Detailed Description
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only examples or embodiments of the application, and that for a person skilled in the art the application can also be applied to other similar contexts on the basis of these drawings without inventive effort. Unless otherwise apparent from the context, or otherwise indicated, like reference numbers in the figures refer to the same structure or operation.
It should be understood that "system", "device", "unit" and/or "module" as used herein is a method for distinguishing different components, elements, parts, portions or assemblies at different levels. However, other words may be substituted by other expressions if they accomplish the same purpose.
As used in this application and the appended claims, the terms "a," "an," "the," and/or "the" are not intended to be inclusive in the singular, but rather are intended to be inclusive in the plural unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" merely indicate that steps and elements are included which are explicitly identified, that the steps and elements do not form an exclusive list, and that a method or apparatus may include other steps or elements.
In the field of hearing aids, air conduction hearing aids or bone conduction hearing aids are commonly used to compensate hearing impaired persons for hearing aids. Traditional air conduction speaker carries out hearing aid compensation to hearing impaired people through enlargiing air conduction sound signal. However, for conductive hearing impaired people, the difference in air conduction sound threshold may be large in some frequency bands, which makes it difficult to compensate hearing with air conduction sound. The bone conduction hearing aid performs hearing aid compensation on hearing loss persons by converting sound signals into vibration signals (bone conduction sounds), but because the bone conduction hearing aid is influenced by performance, the strength of the vibration signals generated in certain frequency bands is insufficient, so that an ideal compensation effect is difficult to achieve, or if the bone conduction hearing aid generates excessive vibration in certain frequency bands, uncomfortable feeling is brought to users.
In order to improve the hearing compensation effect of the hearing auxiliary device, the hearing auxiliary device provided by the application provides hearing compensation for the user through a bone conduction mode and an air conduction mode. In some embodiments, the hearing assistance device may include a signal input module, a signal processing module, and at least one output transducer. Wherein the signal input module is configured to receive an initial sound and convert the initial sound into an electrical signal, the signal processing module is configured to process the electrical signal and generate a control signal, and the at least one output transducer is configured to convert the control signal into bone-conducted sound waves of the user and air-conducted sound waves that can be heard by the user's ear. Within a target frequency range (e.g., 200Hz-8000 Hz), the air conduction sound waves are delivered to the user's ear, which may cause the sound intensity of the air conduction sound heard by the user's ear to be greater than the sound intensity of the initial sound received by the signal input module. In this case, the air conduction sound waves generated by the hearing assistance device are superimposed with the bone conduction sound waves, so that the listening sound intensity perceived by the ears of the user is increased, thereby improving the hearing compensation effect of the hearing assistance device.
In some embodiments, the bone-conducted sound waves and the air-conducted sound waves may be generated by the same output transducer (e.g., bone-conducted vibration assembly). The output transducer converts the control signal into air conduction sound waves which are heard by the ear of the user, which can be understood as that the shell of the hearing assistance device generates the air conduction sound waves (which can also be called as the leakage sound of the hearing assistance device) under the driving of the output transducer. In addition, the shell of the hearing aid can be provided with a sound guide hole meeting certain conditions. The sound conduction hole can conduct out sound in the shell of the hearing auxiliary device, and superpose the sound conduction hole with sound leakage generated by vibration of the shell to jointly form air conduction sound waves heard by ears of a user.
In some embodiments, the hearing assistance device may also include both a bone conduction vibration component (also referred to as a first vibration component) and an air conduction vibration component (also referred to as a second vibration component). The bone-conducted sound waves and the air-conducted sound waves may be generated by a bone-conducted vibration assembly and an air-conducted vibration assembly, respectively. In the using process, the signal processing module can respectively process the electric signals for generating the air conduction sound waves and the electric signals for generating the bone conduction sound waves according to actual conditions so as to meet different requirements of different hearing loss persons or the same hearing loss person on hearing compensation under different environments.
Fig. 1 is an exemplary frame diagram of a hearing assistance device provided according to some embodiments of the present application. As shown in fig. 1, the hearing assistance device 10 may include a signal input module 100, a signal processing module 200, and at least one output transducer 300.
The signal input module 100 is configured to receive an initial sound and convert the received initial sound into an electrical signal. In some embodiments, signal input module 100 may include a microphone 110 or/and an audio interface 120. In some embodiments, the microphone 110 may include an air conduction microphone, a bone conduction microphone, a remote microphone, a digital microphone, and the like, or any combination thereof. In some embodiments, the remote microphone may include a wired microphone, a wireless microphone, a broadcast microphone, etc., or any combination thereof. In some embodiments, the number of the microphones 110 may be one or more, and when the number of the microphones 110 is plural, the types of the microphones 110 may be one or more. In some embodiments, the initial sound may include sound transmitted to the signal input module 100 from the external environment through air conduction. For example, the microphone 110 may convert the collected air vibration into an analog signal (electrical signal). The audio interface 120 is configured to receive digital or analog signals of the microphone 110. In some embodiments, the audio interface 120 may include an analog audio interface, a digital audio interface, a wired audio interface, a wireless audio interface, and the like, or any combination thereof. In some embodiments, signal input module 100 may directly receive electrical signals communicated by wire or wirelessly. For example, the audio interface 120 may receive any digital or analog signal corresponding to sound from an external device through a wired or wireless manner.
The signal processing module 200 may be configured to process the electrical signal output by the signal input module 100 and generate a control signal. The control signal may be used to control the output transducer 300 to output bone-conducted sound waves and/or air-conducted sound waves. In the embodiments of the present specification, bone conduction sound waves refer to sound waves that are perceived by a user as mechanical vibrations conducted to the user's cochlea via bone (also referred to as "bone conduction sound"), and air conduction sound waves refer to sound waves that are perceived by a user as mechanical vibrations conducted to the user's cochlea via air (also referred to as "air conduction sound").
In some embodiments, the signal processing module 200 may include a signal processing unit 210. The signal processing unit 210 may process the received electrical signal. For example, the signal processing unit 210 may perform frequency-based processing on the electrical signals, and classify the electrical signals in different frequency bands. For another example, the signal processing unit 210 may perform noise reduction processing on the electrical signal to remove noise in the electrical signal (e.g., the electrical signal corresponding to the noise received by the signal input module 100). In some embodiments, the signal processing module 200 may further include at least one power amplifier 220. The power amplifier 220 may amplify the received electrical signal. In some embodiments, the order in which the signal processing unit 210 and the power amplifier 220 process signals in the signal processing module 200 is not limited herein. For example, in some embodiments, the signal processing unit 210 may process the electrical signal output by the signal input module 100 into one or more signals, and the power amplifier 220 may amplify the one or more signals to generate the control signal. In some alternative embodiments, the power amplifier 220 may amplify the electrical signal output by the signal input module 100, and the signal processing unit 210 may then process the amplified electrical signal to generate one or more control signals. In some embodiments, the signal processing unit 210 may be located between a plurality of power amplifiers 220. For example, the power amplifier 220 may include a first power amplifier and a second power amplifier, the signal processing unit 210 is located between the first power amplifier and the second power amplifier, the first power amplifier may amplify the electrical signal output by the signal input module 100, the signal processing unit 210 processes the electrical signal based on the amplified electrical signal to generate one or more control signals, and the second power amplifier performs power method processing based on the one or more control signals. In other embodiments, the signal processing module 200 may include only the signal processing unit 210, and not the power amplifier 220. Further description of the signal processing module 200 can be found elsewhere in this application (e.g., fig. 2 and its related description), and will not be described herein again.
The at least one output transducer 300 may be configured to convert the control signal generated by the signal processing module 200 into bone-conducted sound waves and air-conducted sound waves that may be heard by the user's ear. In this application, a transducer refers to a component that can convert an electrical signal into a vibration signal.
In some embodiments, at least one output transducer 300 comprises a bone conduction vibration assembly. The bone conduction vibration assembly is attached to the face of the user to transmit the vibration signal to the cochlea through the skull bone. At the same time, the vibration signal may cause vibration of the housing of the bone conduction vibration assembly, producing air conduction sound waves that are heard by the user's ear. In some embodiments, by designing the structure of the bone conduction vibration assembly and adjusting the processing manner of the different modules in the signal processing module 200 to process the electrical signals, the air conduction sound waves generated by the bone conduction vibration assembly can meet certain requirements, for example, in a target frequency range (e.g., 200Hz-8000 Hz), the air conduction sound waves generated by the bone conduction vibration assembly are transmitted to (the cochlea of) the ear of the user, so that the sound intensity of the air conduction sound heard by the ear when the user wears the hearing assistance device 10 is greater than the sound intensity of the air conduction sound heard by the ear when does not wear the hearing assistance device 10. That is, the bone conduction vibration assembly generates bone conduction sound waves and amplifies air conduction sounds heard by the user, so that hearing compensation of the user in a bone conduction mode and an air conduction mode is achieved. Here, the user may consider that the hearing assistance device 10 is in an operating state when wearing the hearing assistance device 10, and may consider that the hearing assistance device 10 is in a non-operating state when not wearing the hearing assistance device 10. For a detailed description of the operating state and the non-operating state, reference may be made to fig. 5 of the present application and its related contents, which are not further limited herein.
In some embodiments, the at least one output transducer 300 includes a bone conduction vibration assembly and an air conduction vibration assembly. The air conduction vibration assembly may convert the control signal generated by the signal processing module 200 into additional air conduction sound waves to further compensate the user for hearing in an air conduction manner. Further description of the output transducer 300 may be found elsewhere in this application (e.g., fig. 3 and its associated description) and will not be repeated here.
Fig. 2 is a block diagram of a signal processing unit provided according to some embodiments of the present application. As shown in fig. 2, in some embodiments, the signal processing unit 210 may include a frequency division module 211, a high frequency signal processing module 212, and a low frequency signal processing module 213. The crossover module 211 may directly decompose the electrical signal into corresponding different frequency band components, e.g., the crossover module 211 may decompose the initial sound into high and low frequency band components. The high-frequency signal processing module 212 may be coupled to the frequency dividing module 211 and configured to generate a high-frequency output signal (high-frequency electrical signal) from the high-band component; the low frequency signal processing module 213 may be coupled to the frequency division module 211 and configured to generate a low frequency output signal (low frequency electrical signal) from the low frequency band components. In the embodiments of the present specification, the high frequency component may refer to an electric signal of a high frequency, and the low frequency component may be an electric signal of a low frequency. The high frequency signal processing module 212 may process or adjust a high frequency electrical signal, and the low frequency signal processing module 213 may process a low frequency electrical signal. In some embodiments, the high frequency signal processing module 212 and the low frequency signal processing module 213 may refer to an equalizer, a dynamic range controller, a phase processor, or the like. It is noted that in other embodiments, the hearing assistance device may include only the frequency dividing module 211, and the high frequency signal processing module 212 and the low frequency signal processing module 213 may determine whether to install or not according to actual circumstances. In the embodiments of the present specification, the low frequency may refer to a frequency band of substantially 20Hz to 150Hz, the medium frequency may refer to a frequency band of substantially 150Hz to 5kHz, the high frequency may refer to a frequency band of substantially 5kHz to 20kHz, the medium and low frequency may refer to a frequency band of substantially 150Hz to 500Hz, and the medium and high frequency may refer to a frequency band of 500Hz to 5 kHz. It should be noted that the above frequency band division is only given as an example approximately to the interval. The definition of the frequency bands can be changed with different industries, different application scenarios and different classification standards. For example, in some other application scenarios, the low frequency refers to a frequency band of substantially 20Hz to 80Hz, the medium-low frequency may refer to a frequency band between substantially 80Hz and 160Hz, the medium frequency may refer to a frequency band of substantially 160Hz to 1280Hz, the medium-high frequency may refer to a frequency band of substantially 1280Hz-2560Hz, and the high frequency may refer to a frequency band of substantially 2560Hz to 20 kHz.
In some embodiments, the frequency dividing module 211 may also directly decompose the electrical signal into frequency components corresponding to a plurality of frequency bands, and meanwhile, the signal processing unit 210 may include a signal processing unit corresponding to the plurality of frequency bands to obtain frequency output signals corresponding to the plurality of frequency bands. For example, the crossover module 211 may decompose the electrical signal into one or more of a low band component, a mid band component, a high band component, or decompose the initial sound into a mid-low frequency component, a mid-high band component, and so forth.
In some embodiments, the signal processing module 200 may only include the frequency dividing module 211, and the frequency dividing module 211 may perform frequency dividing processing on the electrical signal output by the signal input module 100 to obtain electrical signals of various frequency bands (e.g., low-frequency electrical signals, high-frequency electrical signals, etc.), and directly output the electrical signals to the power amplifier for amplification.
It should be noted that the dividing manner of the electrical signal by the frequency dividing module 211 can be performed according to actual situations or user settings, and is not limited to the above-described manner. In some embodiments, the frequency division module may include several filters/filter sets to process the electrical signal to output control signals containing different frequency components, which may control the output of the air conduction sound or bone conduction sound, respectively. In some embodiments, the filter/filter bank includes, but is not limited to, analog filters, digital filters, passive filters, active filters, and the like.
In some embodiments, the signal input module 100 may perform frequency division processing on the initial sound in advance. For example, signal input module 100 may include a high frequency microphone and a low frequency microphone. The high frequency microphone may receive a high frequency sound of the initial sound and convert the high frequency sound into a high frequency component, and the low frequency microphone may receive a low frequency sound of the initial sound and convert the low frequency sound into a low frequency component, so that the electrical signal is subjected to frequency division processing before being transmitted to the signal processing module 200. In some embodiments, the signal processing unit 210 may further include a high frequency signal processing module and a low frequency signal processing module directly coupled to the signal input module 100 to generate corresponding high frequency output signals and low frequency output signals from the high frequency component and the low frequency component, respectively.
In some embodiments, the signal processing unit 210 may include only a full frequency signal processing module, and does not need to perform frequency division processing on the electrical signal input by the signal input module 100. That is, the frequency division module 211, the high frequency signal processing module 212, and the low frequency signal processing module 213 may be replaced with full frequency signal processing modules. The full frequency signal processing module may include an equalizer, a dynamic range controller, a phase processor, etc. Wherein the equalizer may be configured to individually gain or attenuate the electrical signal according to a particular frequency band. The dynamic range controller may be configured to compress and amplify the electrical signal, e.g., to make the sound softer or louder. The phase processor may be configured to adjust the phase of the electrical signal. In some embodiments, the electrical signal may be processed into an output signal via an equalizer, a dynamic range controller, a phase processor. For example, in some scenarios, the user's ear may be more sensitive to air conduction sound in certain frequency ranges (e.g., low, medium, or high frequencies), and the full frequency signal processing module may be made to enhance the electrical signals in that frequency range such that the output transducer 300 outputs air conduction sound of greater acoustic intensity in that frequency range. In other scenarios, the strong low-frequency bone conduction sound waves may bring uncomfortable feeling to the user, and the full-frequency signal processing module may be used to attenuate the low-frequency electrical signals to alleviate the uncomfortable feeling. Optionally, the full-frequency signal processing module may also appropriately enhance the electrical signals in other frequency ranges than the low frequency range to compensate for the attenuated low-frequency signal, so as to avoid the user from hearing the reduction of the overall sound intensity.
In some embodiments, the signal processing module 200 may further include at least one power amplifier 220. The power amplifier 220 may amplify the electrical signal (e.g., the high frequency output signal or the low frequency output signal) output by the signal input module 100 or processed by the signal processing unit 210 to generate the control signal. In some embodiments, the signal processing module 200 may include two power amplifiers 220. For example, the power amplifier may include a first power amplifier configured to amplify the high frequency output signal to a corresponding control signal and a second power amplifier to amplify the low frequency output signal to a corresponding control signal. In some embodiments, when the frequency dividing module 211 may divide the electrical signal into a plurality of frequency components corresponding to a plurality of frequency bands, the signal processing module 200 may include a plurality of power amplifiers 220 to amplify the output signals corresponding to the plurality of frequency components into the control signals, respectively. In some embodiments, a power amplifier may also be used in conjunction with the full-frequency signal processing module described above to selectively amplify sounds within a particular frequency range of the initial sound, and ultimately to deliver bone-conducted sound waves and air-conducted sound waves to the user.
The signal processing module 200 can enhance the hearing compensation effect of the hearing assistance device. By way of example only, where the hearing assistance device is a bone conduction hearing aid, the hearing assistance device may utilize an output transducer (e.g., a vibrating speaker) to output full range vibrations or bone conduction sounds that are used to generate the hearing sensation of the person by means of bone conduction. In some cases, bone conduction hearing aids have better sound compensation in a specific frequency range (e.g., 200Hz-8000 Hz). In some embodiments, to further highlight the sound compensation effect of the hearing assistance device in the specific frequency range, the electrical signal in the specific frequency range may be amplified. In some embodiments, the electrical signal outside the specific range (e.g., 20Hz to 200hz,8000Hz to 20 kHz) may be amplified, so that the hearing assistance device may have a better sound compensation effect in the specific range, and at the same time, ensure the sound compensation effect in other frequency bands, so that the sound compensation effect of the hearing assistance device has a better balance in the full frequency band, and improve the user experience. In some embodiments, the output transducer of the hearing assistance device generates bone-conducted sound waves while generating corresponding air-conducted sound waves. Air-conducted sound waves may be used as sound compensation in hearing assistance devices in addition to bone-conducted sound waves. The electric signals within the specific frequency range are subjected to power amplification treatment, so that air conduction sound waves can be additionally added while the bone conduction sound wave compensation amount under the frequency range is improved, and the sound compensation effect of the hearing auxiliary device is further improved. It should be noted that the frequency range selected by the power amplifier is only used as an exemplary illustration, and those skilled in the art can adjust the frequency range corresponding to the power amplifier through practical application conditions, which is not further limited herein.
It should be noted that the signal processing unit 210 may not perform frequency division processing, and here, the signal processing unit 210 may not include the frequency division module 211, the high frequency signal processing module 212, and the low frequency signal processing module 213. In some embodiments, the signal processing unit 210 may process the electrical signal based on time, frequency, or sub-bands of the electrical signal. In some embodiments, the signal processing unit 210 may include an equalizer, a dynamic range controller, a phase processor, a non-linear processor, and the like. Wherein the equalizer may be configured to individually gain or attenuate the electrical signal according to a particular frequency band. The dynamic range controller may be configured to compress and amplify the electrical signal, e.g., to make the sound softer or louder. The phase processor may be configured to adjust the phase of the electrical signal. The non-linear processor may be configured to reduce noise signals in the electrical signal. In some embodiments, the electrical signal may be processed into an output signal via an equalizer, a dynamic range controller, a phase processor, a non-linear processor.
FIG. 3 is a schematic diagram of an output transducer provided in accordance with some embodiments of the present application.
As shown in fig. 3, output transducer 300 may include a first vibrating assembly and a housing 350. Wherein the first vibration assembly may be electrically connected with the signal processing module 200 to receive the control signal generated by the signal processing module 200 and generate bone conduction sound waves based on the control signal. In particular, the first vibration assembly may be mechanically vibrated in accordance with the control signal, which may generate bone conduction sound waves. For example, the first vibration component may be any element (e.g., a vibration motor, an electromagnetic vibration device, etc.) that converts an electrical signal (e.g., a control signal from the signal processing module 200) into a mechanical vibration signal, wherein the manner of signal conversion includes, but is not limited to: electromagnetic (moving coil, moving iron, magnetostrictive), piezoelectric, electrostatic, etc. The structure inside the first vibration component may be a single resonance system or a composite resonance system. When the hearing assistance device is worn by a user, part of the structure in the first vibration assembly can be attached to the skin of the head of the user, so that bone conduction sound waves are conducted to the cochlea of the user through the skull of the user. The housing 350 may be coupled to the first vibrating assembly and generate air-borne sound waves under the driving of the first vibrating assembly.
In some embodiments, housing 350 may be coupled to first vibration assembly via coupling 330. In some embodiments, the response of housing 350 to the vibration of the first vibratory assembly may be adjusted by adjusting a connection 330 between housing 350 and the first vibratory assembly, i.e., the effect of housing 350 producing air-borne sound waves may be adjusted by adjusting connection 330. In some embodiments, the connector 330 may be rigid or flexible. When the coupling member 330 is rigid, the coupling of the housing 350 to the first vibration assembly may be a rigid coupling. In other embodiments, the connecting member 330 may be an elastic member, such as a spring or a leaf spring.
In some embodiments, the first vibration assembly may include a magnetic circuit system 310, a vibration plate 320, and a coil 340. Magnetic circuit 310 may be configured to generate a first magnetic field; the vibration plate 320 may be connected to the case 350 through the connection 330; the coil 340 may be connected to the vibration plate 320 and electrically connected to the signal processing module 200. Specifically, the coil 340 may receive the control signal generated by the signal processing module 200 and generate a second magnetic field based on the control signal, and through the interaction of the first magnetic field and the second magnetic field, the coil 340 may be subjected to the force F, so as to excite the vibration plate 320 to vibrate, so as to generate bone conduction sound waves on the face of the user. In addition, the vibration of the vibrating plate 320 may drive the housing 350 to vibrate, thereby generating air conduction sound waves. Specifically, in the middle and low frequency bands, the vibration amplitude of the housing 350 is greater than or equal to that of the vibration plate 320, and since the housing 350 is not in direct contact with the skin, the vibration of the housing 350 cannot transmit sound in a bone conduction manner, but the vibration of the housing 350 can generate air conduction sound waves and conduct the eardrum through the external auditory canal path, so that the user hears the sound, thereby increasing the sound compensation effect. Meanwhile, since the vibration of the case 350 in the middle and low frequency bands is stronger than that of the vibrating plate 320, the vibration amplitude of the vibrating plate 320 is smaller, so that the vibration of the user can be effectively reduced, and the comfort level can be improved. In the higher frequency band, the vibration amplitude of the vibrating plate 320 is significantly greater than that of the housing 350, so that the first vibration assembly can effectively transmit sound in a bone conduction manner through the vibration of the vibrating plate 320; meanwhile, the vibration amplitude of the shell 350 is much smaller than that of the vibrating plate 320, so that the sound leakage of the shell 350 in a higher frequency band can be effectively reduced. In some embodiments, the frequency range and amplitude of sound transmitted through air conduction or bone conduction can be adjusted by adjusting the mass and spring rate of portions of the first vibratory assembly.
In some embodiments, the vibration plate 320 and the case 350 define a cavity, and the magnetic circuit system 310 is located in the cavity and may be connected to the case 350 by a connection 330 or other elastic member (not shown in fig. 3). The magnetic circuit system 310 also generates corresponding vibration in interaction with the coil 340. Vibration of magnetic circuit 310 relative to housing 350 may drive air vibration within the cavity. In some embodiments, one or more sound-conducting holes are formed in housing 350 to allow air within the cavity to be conducted out of housing 350 and to be superimposed with the sound generated by the vibration of housing 350 to form air-conducted sound waves that are heard by the user's ear. The number, location, shape and/or size of the sound conduction holes in the housing 350 need to satisfy certain conditions such that sound derived from the sound conduction holes interferes with sound generated by vibration of the housing 350 at the user's ear in an increasing manner, thereby further enhancing the air conduction sound heard by the user.
As can be seen from fig. 3 and its associated description, bone conduction sound waves are generated by the vibrating plate 320 of the output transducer 300, and air conduction sound waves are generated by the housing 350 (or the sound conduction holes on the housing 350). In some embodiments, the control signal includes different frequency components, and the vibration of the vibration plate 320 based on the control signal may include vibrations of different frequencies. Therefore, bone conduction sound waves and air conduction sound waves emitted by the hearing assistance device can cover different frequency ranges, so that the hearing assistance device can provide certain sound compensation effect in different frequency ranges.
It should be appreciated that the bone conduction sound waves and the air conduction sound waves generated by the vibration plate 320 and the shell 350 have different sound compensation effects at different frequencies due to the different degrees of response of the vibration plate and the shell to vibrations of different frequencies. Using air-borne sound waves as an example, the vibration of the housing 350 may amplify the sound intensity of the air-borne sound heard by the user within the target frequency range. That is, in the target frequency range, air conduction sound waves generated by the vibration of the housing 350 are transmitted to the user's ear, so that the sound intensity of the air conduction sound heard by the user's ear is greater than the sound intensity of the initial sound received by the signal input module. The target frequency range is related to the structure of the housing 350 and the way the signal processing module 200 processes the signal. In some embodiments, the target frequency range may be 200Hz-8000Hz, or 500Hz-6000Hz, or 750Hz-1000Hz, or any other frequency range. It is considered that the hearing assistance device has a good sound compensation effect in the target frequency range. In some specific scenarios, the control signal corresponding to the target frequency range may be amplified more in the signal processing module 200, so as to further improve the sound compensation effect in the target frequency range. In other application scenarios, for example, when the frequency range of the sound received by the user is greater than the target frequency range, since the sound compensation effect of the hearing assistance device in the target frequency range is obvious, the control signals except the target frequency range can be amplified more at this time, so as to equalize the hearing effects of the user in each frequency band, and simultaneously reduce the energy consumption of the hearing assistance device, and ensure the service time of the hearing assistance device.
For example, when amplifying the high-band electric signal and the low-band electric signal, the amplification degree of the high-band electric signal and the low-band electric signal may be the same or different. For example, on the premise that the high-frequency sound compensation effect of the hearing aid is better than the low-frequency sound compensation effect, the low-frequency band electric signal can be amplified, i.e., the low-frequency output signal is stronger than the high-frequency output signal, so that the hearing aid is ensured to have a relatively balanced sound compensation effect in the full frequency band. For example, on the premise that the high-frequency sound compensation effect of the hearing assistance device is better than the low-frequency sound compensation effect, the amplification degree of the high-frequency electric signal may be greater than that of the low-frequency electric signal in order to further emphasize the hearing effect of the hearing assistance device under the high-frequency output signal. In some embodiments, the same degree of amplification may be applied to the full band electrical signal. It is noted that in some embodiments, the high frequency output signal or the low frequency output signal may be determined relative to a target frequency. For example, when the target frequency range is 20Hz-1000Hz, the low frequency may be a frequency band of 20Hz-100Hz, a frequency band of 20Hz-150Hz, a frequency band of 20Hz-200Hz, etc., and the high frequency may be a frequency band of 900Hz-1000Hz, a frequency band of 850Hz-1000Hz, a frequency band of 800Hz-1000Hz, etc. In some embodiments, the high frequency output signal and the low frequency output signal may also be determined relative to full band frequencies as described elsewhere in this application. In addition, the high-frequency output signal and the low-frequency output signal are relative to each other, and those skilled in the art can perform corresponding adjustment according to an actual application scenario, which is not further limited herein.
To further illustrate the hearing effect of a hearing assistance device over a range of frequencies (e.g., 200Hz-8000 Hz), the bone conduction component test results and the air conduction component test results of the hearing assistance device are now described.
FIG. 4 is a diagram of a full range force level (OFL) output by a hearing assistance device in a reference environment according to some embodiments of the present application 60 ) A frequency response diagram. In the embodiments of the present description, the reference environment may refer to a sound intensity value (also referred to as a reference sound pressure level) received by an ear simulator of the artificial head when the hearing assistance device is in a non-operating state. OFL 60 Refers to the output power level of the hearing assistance device at a reference sound pressure level of 60dB. For convenience of description, the sound intensity value corresponding to the reference environment in the embodiments of the present specification is 60dB. It can be seen from fig. 4 that when the sound intensity of the reference environment is 60dB, the vibration power level of the bone conduction component outputted from the hearing assistance device is above 76dB at frequencies between 250Hz and 8000Hz. When the frequency range is 250Hz-2000Hz, the vibration power level of the bone conduction component output by the hearing assistance device is above 85 dB. When the frequency range is 500Hz-1500Hz, the hearing auxiliary device outputsThe vibration level of the bone conduction components is above 90 dB. When the frequency range is 750Hz-1000Hz, the vibration power level of the bone conduction components output by the hearing auxiliary device is above 92 dB. In some embodiments, for sounds at a certain reference sound pressure level (e.g., 60 dB), the signal processing module 200 may be enabled to amplify electrical signals at different frequencies to different degrees, taking into account the different vibration force levels of the bone conduction components at different frequencies. For example, since the vibration level of the bone conduction component in the range of 1000Hz to 1500Hz exceeds the vibration level in other ranges, the signal processing module 200 may amplify the frequency band component in the range of 1000Hz to 1500Hz more to further improve the bone conduction sound compensation effect of the hearing assistance device. Alternatively, since the vibration level of the bone conduction component at about 4000Hz is lower than the vibration levels of other ranges, the signal processing module 200 may amplify more frequency band components at about 4000Hz in order to equalize the compensation effect of the bone conduction sound of the hearing assistance device in each frequency range.
Fig. 5 is a graph of frequency response of a full range acoustic-force sensitivity level (AMSL) of bone conduction components output by a hearing assistance device according to some embodiments of the present application. In embodiments of the present description, the sound-force sensitivity level may refer to the difference between the full-range force level and a reference sound pressure level, e.g., OFL in FIG. 5 60 A difference from a reference sound pressure level (e.g., 60 dB). It can be seen from fig. 5 that the bone conduction component has a sound-force sensitivity level above 15dB for a frequency range of 250Hz-8000Hz when the reference sound pressure level of the hearing assistance device is 60dB. The sound-force sensitivity level of the bone conduction component is above 25dB when the frequency range is 250Hz-2000 Hz. The sound-force sensitivity level of the bone conduction component is above 30dB when the frequency range is 500Hz-1500 Hz. The sound-force sensitivity level of the bone conduction component is above 32dB when the frequency range is 750Hz-1000Hz. In some embodiments, for sounds of a certain sound intensity (e.g., 60 dB), the signal processing module 200 may be enabled to amplify electrical signals of different frequencies to different degrees, taking into account the different sound-force sensitivity levels of the bone conduction components of different frequencies (or frequency bands). For example, since the sound-force sensitivity level of the bone conduction component in the range of 1000Hz-1500Hz exceeds the sound-force sensitivity level of the other range, in order to further improve the sensitivityThe bone conduction sound compensation effect of the hearing aid is improved, and more frequency band components in the range of 1000Hz-1500Hz can be amplified by the signal processing module 200. Alternatively, since the sound-force sensitivity level of the bone conduction component of about 8000Hz is lower than that of other ranges, the signal processing module 200 may amplify more of the frequency band components of about 8000Hz in order to equalize the compensation effect of the bone conduction sound of the hearing assistance device in each frequency range. It should be noted that, in the embodiment of the present specification, the sound intensity value corresponding to the reference environment is not limited to the above-mentioned 60dB, the sound intensity value corresponding to the reference environment is set to 60dB as an exemplary illustration, and in other embodiments, the sound intensity value corresponding to the reference environment may be adaptively adjusted according to actual situations, and is not further limited herein.
In some embodiments, the output of the air conduction component of the hearing assistance device may be tested using an artificial head with an ear simulator. Wherein, what the ear simulator measures is the output of the air conduction component only. In testing the output of the air conduction component, a test sound source may be tested using a single tone (e.g., 250Hz, 500Hz, 750Hz, 1000Hz, 1500Hz, 2000Hz, 3000Hz, 4000Hz, 6000Hz, 8000 Hz) at a particular sound pressure level (e.g., a reference sound pressure level of 60 dB). In the test process, the artificial head with the ear simulator can be placed on a test point without wearing a hearing auxiliary device, and then a test sound source is started to obtain the sound pressure level (output of the air conduction component) measured by the ear simulator under the condition, which can also be called as the sound pressure level in a non-working state; in addition, the hearing assistance device may be placed on the artificial head according to a wearing manner during actual use, and when the test sound source is turned on, a sound pressure level measured by the ear simulator under the condition is obtained, which may also be called as an "operating state" sound pressure level, wherein a gain of the air conduction component of the hearing assistance device is a difference between the "operating state" sound pressure level and the "non-operating state" sound pressure level. In some embodiments, the test point may be selected at 1.5m directly in front of the test sound source with the artificial head face facing the test sound source direction. It should be noted that the above method for testing the air conduction sound pressure of the hearing assistance device is only an exemplary illustration, and those skilled in the art can adapt the experimental method according to actual situations.
By testing the output of the air conduction component of the hearing assistance device, a sound pressure level diagram and a gain diagram of the hearing assistance device in a working state and a non-working state at a reference sound pressure level can be obtained. In particular, fig. 6 is a graph of sound pressure levels of air conduction components output by a hearing assistance device according to some embodiments of the present application in a reference environment; fig. 7 is a graph of gain of output air conduction components of a hearing assistance device provided in accordance with some embodiments of the present application in a reference environment. In embodiments of the present description, the gain of the output air conduction component may refer to the difference between the sound pressure level of the output air conduction component of the hearing assistance device in the active state and the sound pressure level of the output air conduction component in the non-active state at each frequency. As shown in fig. 6 and 7, in the non-operating state of the hearing assistance device, when the frequency range is 250Hz to 8000Hz and the reference sound pressure level is 60dB, the sound pressure level of the air conduction component measured by the ear simulator inside the artificial head is substantially 60dB, i.e., the sound pressure level of the air conduction component measured by the ear simulator inside the artificial head is substantially equal to the sound pressure level of the test sound source. When the hearing aid is in a working state and the frequency range is 250Hz-6000Hz, the sound pressure level of the air conduction component measured by the ear simulator inside the artificial head is more than 60dB, and when the frequency range is 6000Hz-8000Hz, the sound pressure level of the air conduction component measured by the bone simulator inside the artificial head is about 60dB, so that the hearing aid can generate air conduction sound waves different from a test sound source when the hearing aid is in a working state and the frequency range is 250Hz-6000Hz, the air conduction sound waves can generate sound intensity higher than the test sound source, and the air conduction hearing compensation effect of the hearing aid is improved. In some embodiments, for sound with a certain sound intensity (e.g., 60 dBSPL), the signal processing module 200 may amplify the electrical signals with different frequencies (or frequency bands) to different degrees in consideration of different gains of the air conduction components with different frequencies. For example, since the gain of the air conduction component around 750Hz exceeds the gain of other ranges, the signal processing module 200 may amplify more frequency components in the 750Hz range in order to further improve the air conduction sound compensation effect of the hearing assistance device. Alternatively, since the gain of the air conduction component above 6000Hz is smaller than the gains of other ranges, the signal processing module 200 may amplify more frequency band components above 6000Hz in order to equalize the compensation effect of the air conduction sound of the hearing assistance device in each frequency range.
In combination with the contents of fig. 4-7, the bone conduction sound waves and the air conduction sound waves output by the hearing assistance device have better hearing compensation effect in a specific frequency range. For example, in the frequency range of 250Hz to 8000Hz, bone conduction sound waves output by the hearing assistance device have a better gain effect relative to the reference sound pressure level. As another example, in the frequency range of 250Hz-6000Hz, the air-conduction sound waves output by the hearing assistance device have a better gain effect relative to a reference sound pressure level (e.g., 60 dBSPL). In summary, it can be known that the hearing assistance device has good bone conduction gain and air conduction gain in the target frequency range. In some embodiments, the target frequency range is 200Hz-8000Hz. Preferably, the target frequency range is 500Hz-6000Hz. More preferably, the target frequency range is 750Hz-1000Hz. It should be noted that the sound compensation effect of the hearing assistance device in bone-conducted sound waves and/or air-conducted sound waves can be improved by adjusting the frequency range. For example, at 250Hz to 500Hz, the sound compensation effect of the hearing assistance device on bone conduction sound waves is better, while at this frequency band, the sound compensation effect of the hearing assistance device on air conduction sound waves is worse, and here, the power amplifier 220 can perform power amplification processing on the electric signals of this frequency band, so as to enhance the sound compensation effect of the hearing assistance device on bone conduction sound waves of this frequency band. For another example, at 3000Hz to 4000Hz, the sound compensation effect of the hearing assistance device on air conduction sound waves is better, and at this frequency band, the sound compensation effect of the hearing assistance device on bone conduction sound waves is poorer, and here, the electric signal of this frequency band can be amplified by the power amplifier 220 to enhance the sound compensation effect of the hearing assistance device on air conduction sound waves of this frequency band. For another example, at 750Hz to 1500Hz, the hearing assistance device has a better sound compensation effect for air conduction sound waves and bone conduction sound waves, and here, the power amplifier 220 may amplify the electrical signals in the frequency band to enhance the sound compensation effect of the hearing assistance device in the aspects of bone conduction sound waves and air conduction sound waves in the frequency band, so as to highlight the sound compensation effect of the hearing assistance device in the frequency band. In other embodiments, in order to ensure the equalization of the listening effect of the hearing assistance device in each frequency band, the power amplification processing may be performed on signals in frequency bands other than 750Hz to 1500 Hz. In other embodiments, the frequency range and amplitude of sound transmission through air conduction or bone conduction can also be adjusted by adjusting the mass and elastic coefficient of each part of the first vibration assembly (e.g., the magnetic circuit 310, the vibration plate 320, and the connecting member 330).
In some further embodiments, additional vibration components may be provided in the hearing assistance device in order to enhance the compensating effect of the hearing assistance device in terms of air-conducted sound waves. Referring again to fig. 3, in some embodiments, the hearing assistance device 10 may further include at least one second vibration component (not shown) configured to generate additional air-borne sound waves that may further enhance the sound intensity of the air-borne sound heard by the user's ear within the target frequency range.
In some embodiments, the at least one second vibration component may be a diaphragm structure (e.g., a passive diaphragm) and coupled to the housing 350 such that vibration of the first vibration component may excite the diaphragm structure to generate additional air-borne sound waves. Specifically, when the vibration plate 320 of the output transducer vibrates to generate bone conduction sound waves, the vibration plate also drives the air inside the casing 350 to vibrate and act on the vibration diaphragm structure, and the vibration diaphragm structure vibrates along with the vibration of the air inside the casing 350 to generate additional air conduction sound waves, and the additional air conduction sound waves are radiated to the outside through at least one sound outlet hole formed in the casing 350. The additional air conduction sound waves may be transmitted to the user's ear in conjunction with the air conduction sound waves generated by the vibration of the housing 350, further increasing the sound intensity of the air conduction sound received by the user.
In some embodiments, the second vibration component may be an air conduction speaker configured to generate additional air conduction sound waves in accordance with the control signal. The additional air conduction sound waves emitted from the air conduction speaker may also be radiated to the outside through at least one sound outlet hole provided on the housing 350. In some embodiments, the at least one sound outlet is proximate to a human ear when the hearing assistance device is worn by the user. In some embodiments, the control signal controlling the air conduction speaker may be the same as or different from the control signal controlling the output transducer. For example, when the control signal controlling the air conduction speaker is the same as the control signal controlling the output transducer, the air conduction speaker may supplement the hearing assistance device with sound waves of the same frequency range as the output transducer, thereby enhancing the auditory effect of that frequency range. For another example, when the control signal controlling the air conduction speaker is different from the control signal controlling the output transducer, the air conduction speaker may supplement the hearing assistance device with sound waves in a frequency range different from the frequency range of the output transducer, thereby compensating for the hearing effect of the hearing assistance device in other frequency ranges.
In some embodiments, the hearing assistance device may further comprise a fixation structure configured to carry the hearing assistance device such that the hearing assistance device (shaded area in fig. 8) may be located in the vicinity of the mastoid 1, temporal bone 2, parietal bone 3, frontal bone 4, pinna 5, concha 6 or in the ear canal (not shown in the figures) of the user's head as shown in fig. 8. In other embodiments, the hearing assistance device may be located in other areas of the user's head, and is not further limited herein.
In some embodiments, the hearing assistance device may be incorporated into an article of manufacture such as eyeglasses, headphones, head-mounted display devices, AR/VR helmets, and the like, in which case the securing structure may be a component (e.g., a connector) of the article of manufacture. The hearing assistance device may be secured in a hanging or clamping manner adjacent to the user's ear. In some alternative embodiments, the securing structure may be a hook, and the shape of the hook matches the shape of the pinna, such that the hearing assistance device may be worn separately on the user's ear via the hook. The hearing assistance device for stand-alone use may be communicatively coupled to a signal source (e.g., a computer, cell phone, or other mobile device) via a wired or wireless (e.g., bluetooth) connection. For example, the hearing assistance devices at the left and right ears may each be in direct communication with a signal source by wireless means. For another example, the hearing assistance devices at the left and right ears may include a first output device that may be communicatively coupled to a signal source and a second output device that may be wirelessly coupled to the first output device, wherein the first output device and the second output device are synchronized for audio playback via one or more synchronization signals. The manner of wireless connection may include, but is not limited to, bluetooth, local area network, wide area network, wireless personal area network, near field communication, and the like, or any combination thereof.
In some embodiments, the fixation structure may be a shell structure having a human ear-fitting shape, such as a circular ring, an oval, a polygon (regular or irregular), a U-shape, a V-shape, a semi-circle, so that the fixation structure may be directly hung at the ear of the user. In some embodiments, the securing structure may include an ear loop, a head beam, or an elastic band, etc., so that the hearing assistance device may be better secured to the user to prevent the user from falling off during use. By way of example only, the elastic band may be, for example, a headband that may be configured to be worn around a head region. In some embodiments, the elastic band may be a continuous band and may be elastically stretched to fit on the user's head, while the elastic band may also exert pressure on the user's head such that the hearing assistance device is securely fixed in a particular position on the user's head. In some embodiments, the elastic band may be a discontinuous band. For example, the elastic band may include a rigid portion, which may be made of a rigid material (e.g., plastic or metal), and a flexible portion, which may be secured to the housing of the hearing assistance device by way of a physical connection (e.g., snap, threaded, etc.). The flexible portion may be made of an elastic material (e.g., cloth, composite, or/and neoprene).
Having thus described the basic concept, it will be apparent to those skilled in the art that the foregoing detailed disclosure is to be considered as illustrative only and not limiting of the application. Various modifications, improvements and adaptations to the present application may occur to those skilled in the art, although not explicitly described herein. Such modifications, improvements and adaptations are proposed in the present application and thus fall within the spirit and scope of the exemplary embodiments of the present application.
Also, this application uses specific language to describe embodiments of the application. Reference to "one embodiment," "an embodiment," and/or "some embodiments" means a feature, structure, or characteristic described in connection with at least one embodiment of the application. Therefore, it is emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, some features, structures, or characteristics of one or more embodiments of the present application may be combined as appropriate.
Moreover, those skilled in the art will appreciate that aspects of the present application may be illustrated and described in terms of several patentable species or situations, including any new and useful combination of processes, machines, manufacture, or materials, or any new and useful improvement thereon. Accordingly, various aspects of the present application may be embodied entirely in hardware, entirely in software (including firmware, resident software, micro-code, etc.) or in a combination of hardware and software. The above hardware or software may be referred to as "data block," module, "" engine, "" unit, "" component, "or" system. Furthermore, aspects of the present application may be represented as a computer product, including computer readable program code, in one or more computer readable media.
The computer storage medium may comprise a propagated data signal with the computer program code embodied therewith, for example, on baseband or as part of a carrier wave. The propagated signal may take any of a variety of forms, including electromagnetic, optical, and the like, or any suitable combination. A computer storage medium may be any computer-readable medium that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code located on a computer storage medium may be propagated over any suitable medium, including radio, cable, fiber optic cable, RF, or the like, or any combination of the preceding.
Computer program code required for operation of various portions of the present application may be written in any one or more programming languages, including an object oriented programming language such as Java, scala, smalltalk, eiffel, JADE, emerald, C + +, C #, VB.NET, python, and the like, a conventional programming language such as C, visual Basic, fortran 2003, perl, COBOL 2002, PHP, ABAP, a dynamic programming language such as Python, ruby, and Groovy, or other programming languages, and the like. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the latter scenario, the remote computer may be connected to the user's computer through any network format, such as a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet), or in a cloud computing environment, or as a service, such as a software as a service (SaaS).
Additionally, the order in which elements and sequences of the processes described herein are processed, the use of alphanumeric characters, or the use of other designations, is not intended to limit the order of the processes and methods described herein, unless explicitly claimed. While various presently contemplated embodiments of the invention have been discussed in the foregoing disclosure by way of example, it is to be understood that such detail is solely for that purpose and that the appended claims are not limited to the disclosed embodiments, but, on the contrary, are intended to cover all modifications and equivalent arrangements that are within the spirit and scope of the embodiments herein. For example, although the system components described above may be implemented by hardware devices, they may also be implemented by software-only solutions, such as installing the described system on an existing server or mobile device.
Similarly, it should be noted that in the preceding description of embodiments of the application, various features are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure aiding in the understanding of one or more of the embodiments. This method of disclosure, however, is not intended to imply that more features are required than are expressly recited in the claims. Indeed, the embodiments may be characterized as having less than all of the features of a single embodiment disclosed above.
Where numerals describing the number of components, attributes or the like are used in some embodiments, it is to be understood that such numerals used in the description of the embodiments are modified in some instances by the modifier "about", "approximately" or "substantially". Unless otherwise indicated, "about", "approximately" or "substantially" indicates that the number allows a variation of ± 20%. Accordingly, in some embodiments, the numerical parameters used in the specification and claims are approximations that may vary depending upon the desired properties of the individual embodiments. In some embodiments, the numerical parameter should take into account the specified significant digits and employ a general digit preserving approach. Notwithstanding that the numerical ranges and parameters setting forth the broad scope of the range are approximations, in the specific examples, such numerical values are set forth as precisely as possible within the scope of the application.
The entire contents of each patent, patent application publication, and other material cited in this application, such as articles, books, specifications, publications, documents, and the like, are hereby incorporated by reference into this application. Except where the application is filed in a manner inconsistent or contrary to the present disclosure, and except where the claim is filed in its broadest scope (whether present or later appended to the application) as well. It is to be understood that the descriptions, definitions and/or uses of terms in the attached materials of this application shall control if they are inconsistent or inconsistent with the statements and/or uses of this application.
Finally, it should be understood that the embodiments described herein are merely illustrative of the principles of embodiments of the present application. Other variations are also possible within the scope of the present application. Thus, by way of example, and not limitation, alternative configurations of the embodiments of the present application may be viewed as being consistent with the teachings of the present application. Accordingly, the embodiments of the present application are not limited to only those embodiments explicitly described and depicted herein.

Claims (10)

1. A hearing assistance device, comprising:
a signal input module configured to receive an initial sound and convert the initial sound into an electrical signal;
a signal processing module configured to process the electrical signal and generate a control signal; and
at least one output transducer configured to convert the control signal into bone-conducted sound waves of a user and air-conducted sound waves that can be heard by the user's ear;
the output transducer includes:
a first vibration component electrically connected with the signal processing module to receive the control signal and generate the bone conduction sound wave based on the control signal; and
the shell is coupled with the first vibration assembly and is driven by the first vibration assembly to generate the air conduction sound wave;
wherein the air-conducted sound waves generated by the hearing assistance device are superimposed with the bone-conducted sound waves such that the user's ear perceives an audible sound intensity that is greater than the intensity of the initial sound received by the signal input module.
2. A hearing assistance device as claimed in claim 1, wherein the housing is rigidly connected to the first vibration assembly.
3. A hearing assistance device as claimed in claim 1, wherein the housing is connected to the first vibration assembly by a resilient member.
4. A hearing assistance device as claimed in claim 1, wherein the first vibration component comprises:
a magnetic circuit system configured to generate a first magnetic field;
a vibration plate connected to the case; and
and the coil is connected with the vibration plate and electrically connected with the signal processing module, receives the control signal and generates a second magnetic field based on the control signal, and the first magnetic field and the second magnetic field interact with each other to enable the vibration plate to generate the bone conduction sound wave.
5. A hearing assistance device as claimed in claim 4 wherein the diaphragm and the housing define a cavity, the magnetic circuit being located in the cavity, the magnetic circuit being connected to the housing by a resilient member.
6. A hearing assistance device as claimed in claim 1 wherein the bone conduction sound waves correspond to a vibration output force level greater than 55dB.
7. A hearing assistance device as claimed in claim 1 wherein the output transducer further comprises a second vibration component configured to generate additional air conduction sound waves that enhance the sound intensity of the air conduction sound heard by the user's ear.
8. A hearing assistance device as claimed in claim 7 wherein the second vibration member is a diaphragm structure, the diaphragm structure being connected to the housing, the output transducer exciting the diaphragm structure to produce the additional air-borne sound waves.
9. A hearing assistance device as claimed in claim 7, wherein the second vibration component is an air conduction speaker configured to generate the additional air conduction sound waves in dependence on the control signal.
10. A hearing assistance device as claimed in claim 1, further comprising a securing structure configured to carry the hearing assistance device such that the hearing assistance device is located at a mastoid bone, a temporal bone, an parietal bone, a frontal bone, an auricle, within an ear canal, or a concha of a user's head.
CN202210742765.7A 2020-08-29 2020-08-29 Hearing assisting device Pending CN115334435A (en)

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CN202210742765.7A CN115334435A (en) 2020-08-29 2020-08-29 Hearing assisting device

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