CN109511070A - A kind of hearing aid gain processing method - Google Patents
A kind of hearing aid gain processing method Download PDFInfo
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- CN109511070A CN109511070A CN201811334580.2A CN201811334580A CN109511070A CN 109511070 A CN109511070 A CN 109511070A CN 201811334580 A CN201811334580 A CN 201811334580A CN 109511070 A CN109511070 A CN 109511070A
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- hearing aid
- human voice
- voice signal
- gain processing
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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
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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
- H04R2225/00—Details of deaf aids covered by H04R25/00, not provided for in any of its subgroups
- H04R2225/43—Signal processing in hearing aids to enhance the speech intelligibility
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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)
- Telephone Function (AREA)
Abstract
The present invention provides a kind of hearing aid gain processing method, this method comprises: hearing aid is by obtaining the outer acoustic input sound signal of user's ear；Acoustic input sound signal is converted into frequency domain digital input signal；Frequency domain digital input signal frequency domain signal characteristic is extracted, determines that acoustic input sound signal is noise signal or human voice signal；If noise signal then carries out negative gain process；If human voice signal, then vibration signal is handled there are when vibration signal in judgement, and human voice signal carries out postiive gain processing to treated.Hearing aid judges in the embodiment of the present invention when listening to human voice signal, whether the intensity of vibration signal is sufficiently large, if sufficiently large, then explanation will affect user and listen to, at this point it is possible to handle human voice signal, to reduce influence of the vibration signal to user, influence of the vibration signal to hearing aid is reduced, so that user obtains more good acoustic environments when using hearing aid, user is improved and listens to comfort level.
Description
Technical field
The present invention relates to hearing aid, in particular to a kind of hearing aid gain processing method.
Background technique
Hearing aid is small-sized, the battery powered microelectronic device that hearing loss patient is worn in ear rear or ear.It listens
Threshold refers to that in a certain frequency range, a people can just hear the sound pressure level size of sound.The threshold of pain refers to that a people can connect
The maximum hearing sound pressure level size received.In general, the threshold of audibility of hearing impaired subject listens threshold value big than normal person, entire audible
Dynamic range on sound frequency domain all reduces, directly embody be exactly in a certain frequency range, normal person can hear compared with
High or lower sound hearing impaired listener can not hear.
In normal situation, extraneous environmental noise can be handled using hearing aid, so that user is using hearing aid
When obtain good acoustic environments.But hearing aid is but also user Er Nei forms closed environment, this closed environment
Inherent sound (such as breathing of user, the sound etc. of object or collision is struck when user walks about) can be amplified many
Times, it is tested to influence user's hearing aid body.
Summary of the invention
The present invention provides a kind of hearing aid gain processing method, reduces influence of the vibration signal to hearing aid, so that with
Family obtains more good acoustic environments when using hearing aid, improves user and listens to comfort level.
The present invention provides a kind of hearing aid gain processing method, this method comprises:
Hearing aid obtains the outer acoustic input sound signal of user's ear；
Acoustic input sound signal is converted to frequency domain digital input signal by the hearing aid；
The frequency domain digital input signal frequency domain signal characteristic is extracted, determines that acoustic input sound signal is noise signal
Or human voice signal；
If noise signal then carries out negative gain process；
If human voice signal, then judge to handle the vibration signal there are when vibration signal in the hearing aid,
And human voice signal carries out postiive gain processing to treated.
Further, described to judge to handle the vibration signal there are when vibration signal in the hearing aid, and
To treated, human voice signal carries out postiive gain processing, comprising:
The hearing aid judges whether that receiving the hearing aid is knocked generated vibration signal；
If receiving vibration signal, the hearing aid judges whether the intensity of the vibration signal is greater than default value；
Such as if more than default value, then the hearing aid handles the human voice signal；
To treated, human voice signal carries out postiive gain processing.
Further, the position that the hearing aid is contacted with user ear canal is provided with vibrating sensor, passes through the vibration
Sensor can know whether the hearing aid is knocked.
Further, the hearing aid handles the human voice signal, comprising:
The hearing aid amplifies the human voice signal.
Further, the hearing aid amplifies the human voice signal, comprising:
The intensity that the hearing aid calculates vibration signal accounts for the ratio of the intensity of human voice signal, then according to the ratio enlargement
Human voice signal.
Further, the hearing aid handles the human voice signal, comprising:
Acquire the echo signal generated in user ear canal by human voice signal and vibration signal；
Impulse response is calculated according to human voice signal, vibration signal and echo signal；
Judge within a preset time period, the number that impulse response occurs；
If number is greater than 3, the time difference between each impulse response is calculated；
If the time difference is fixed, without handling human voice signal；
If the time difference is not fixed, it is added in human voice signal identical with vibration signal opposite in phase, intensity reversed
Noise signal.
Further, the position that the hearing aid is located in user ear canal is provided with microphone；The acquisition is believed by voice
Number and the echo signal that is generated in user ear canal of vibration signal, include:
The echo signal generated in user ear canal is acquired by microphone.
Further, described that impulse response is calculated according to human voice signal, vibration signal and echo signal, using following public affairs
Formula:
W (t)=(r (t)-e (t))/(s (t)+z (t))；
Wherein, w (t) is impulse response, and r (t) is echo signal, and s (t) is human voice signal, and z (t) is vibration signal, e (t)
For noise parameter, including ambient noise and circuit noise, noise when ambient noise is no human voice signal, by Mike's elegance
Collection, circuit noise are to preset.
Further, acoustic input sound signal is converted to frequency domain digital input signal by the hearing aid, comprising:
Acoustic input sound signal is converted to time-domain digital input signal by the hearing aid；
The hearing aid makees time domain/frequency domain conversion to time domain digital input signals and obtains frequency domain digital input signal.
Further, described to extract the frequency domain digital input signal frequency domain signal characteristic, determine acoustic input sound
Signal is noise signal or human voice signal, comprising:
To the frequency domain digital input signal, the feature of each frequency separation in multiple frequency separations is extracted, judges the sound
Learning input audio signal is noise signal or human voice signal.
Hearing aid is by obtaining the outer acoustic input sound signal of user's ear in the embodiment of the present invention；Acoustic input sound is believed
Number be converted to frequency domain digital input signal；Frequency domain digital input signal frequency domain signal characteristic is extracted, determines acoustic input sound
Signal is noise signal or human voice signal；If noise signal then carries out negative gain process；If human voice signal, then judging
There are when vibration signal, vibration signal is handled, and human voice signal carries out postiive gain processing to treated.The present invention is real
It applies hearing aid in example to judge when listening to human voice signal, whether the intensity of vibration signal is sufficiently large, if sufficiently large, illustrates meeting
It influences user to listen to, at this point it is possible to handle human voice signal, to reduce influence of the vibration signal to user, reduces vibration
Dynamic influence of the signal to hearing aid improves user so that user obtains more good acoustic environments when using hearing aid
Listen to comfort level.
Detailed description of the invention
Fig. 1 is one embodiment schematic diagram of hearing aid gain processing method in the present invention.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present invention
Attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
The model that the present invention protects all should belong in member's every other embodiment obtained without making creative work
It encloses.
Description and claims of this specification and the (if present)s such as term " first " in above-mentioned attached drawing, " second "
It is to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that the number used in this way
According to being interchangeable under appropriate circumstances, so as to the embodiments described herein can in addition to the content for illustrating or describing herein with
Outer sequence is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that cover non-exclusive packet
Contain, for example, what the process, method, system, product or equipment for containing a series of steps or units were not necessarily limited to be clearly listed
Those step or units, but may include be not clearly listed or it is intrinsic for these process, methods, product or equipment
Other step or units.
As shown in Figure 1, a kind of hearing aid gain processing method is provided in the embodiment of the present invention, this method comprises:
S101, hearing aid obtain the outer acoustic input sound signal of user's ear.
Hearing aid is a miniature loudspeaker, and the sound that can't hear originally is expanded, and recycles the remnants for the person that listens to barrier
Hearing enables sound to be sent to brain auditory center, and feels sound.
Acoustic input sound signal is converted to frequency domain digital input signal by S102, hearing aid.
Wherein, the step of acoustic input sound signal is converted to frequency domain digital input signal by the hearing aid, further
It may include: that acoustic input sound signal is converted to time-domain digital input signal by the hearing aid；The hearing aid is to time domain
Digital input signals make time domain/frequency domain conversion and obtain frequency domain digital input signal.
S103, the frequency domain digital input signal frequency domain signal characteristic is extracted, determines that acoustic input sound signal is to make an uproar
Acoustical signal or human voice signal.
Further, described to extract the frequency domain digital input signal frequency domain signal characteristic, determine acoustic input sound
Signal is noise signal or human voice signal, comprising: to the frequency domain digital input signal, is extracted each in multiple frequency separations
The feature of frequency separation judges the acoustic input sound signal for noise signal or human voice signal.Wherein, according to each frequency
The feature in section judges that the acoustic input sound signal is noise signal or human voice signal is the prior art, herein no longer in detail
Thin description.
If S104, noise signal then carry out negative gain process.
If acoustic input sound signal is noise signal, negative gain process is carried out to offset noise to noise signal herein
It influences.
If S105, human voice signal, then judge there are when vibration signal, at the vibration signal in hearing aid
Reason, and human voice signal carries out postiive gain processing to treated.
If acoustic input sound signal is human voice signal, hearing aid can decide whether that there are vibration signals, shake if it exists
Dynamic signal, then handled vibration signal, and then to treated, human voice signal carries out postiive gain processing.
In the embodiment of the present invention, to human voice signal carry out postiive gain processing after, it is subsequent can be according to conventional techniques
Revert to human voice signal the process of sound by the earphone in hearing aid, this process is the prior art, herein no longer in detail
It states.
Hearing aid is by obtaining the outer acoustic input sound signal of user's ear in the embodiment of the present invention；Acoustic input sound is believed
Number be converted to frequency domain digital input signal；Frequency domain digital input signal frequency domain signal characteristic is extracted, determines acoustic input sound
Signal is noise signal or human voice signal；If noise signal then carries out negative gain process；If human voice signal, then judging
There are when vibration signal, vibration signal is handled, and human voice signal carries out postiive gain processing to treated.The present invention is real
It applies hearing aid in example to judge when listening to human voice signal, whether the intensity of vibration signal is sufficiently large, if sufficiently large, illustrates meeting
It influences user to listen to, at this point it is possible to handle human voice signal, to reduce influence of the vibration signal to user, reduces vibration
Dynamic influence of the signal to hearing aid improves user so that user obtains more good acoustic environments when using hearing aid
Listen to comfort level.
Further, described to judge to handle the vibration signal there are when vibration signal in the hearing aid, and
To treated, human voice signal carries out postiive gain processing, comprising:
The hearing aid judges whether that receiving the hearing aid is knocked generated vibration signal；
If receiving vibration signal, the hearing aid judges whether the intensity of the vibration signal is greater than default value；
Such as if more than default value, then the hearing aid handles the human voice signal；
To treated, human voice signal carries out postiive gain processing.
Further, the position that the hearing aid is contacted with user ear canal is provided with vibrating sensor, passes through the vibration
Sensor can know whether the hearing aid is knocked.
Further, the hearing aid handles the human voice signal, comprising:
The hearing aid amplifies the human voice signal.
Further, the hearing aid amplifies the human voice signal, comprising:
The intensity that the hearing aid calculates vibration signal accounts for the ratio of the intensity of human voice signal, then according to the ratio enlargement
Human voice signal.
Further, the hearing aid handles the human voice signal, comprising:
Acquire the echo signal generated in user ear canal by human voice signal and vibration signal；
Impulse response is calculated according to human voice signal, vibration signal and echo signal；
Judge within the preset period (such as 10 seconds), the number that impulse response occurs；
If number is greater than 3, the time difference between each impulse response is calculated；
If the time difference fixes (such as being all interval 1 second or 2 seconds), illustrate vibration signal and audio signal in phase
Be it is matched, then further illustrate that user may be to beat time or moving with sound, without handling human voice signal；
If the time difference is not fixed (such as the first time and the second minor tick 3 seconds, second and third minor tick 0.5 second),
Then explanation has influence of noise, can be added identical with vibration signal opposite in phase, intensity reversely make an uproar in human voice signal at this time
Acoustical signal.
Further, the position that the hearing aid is located in user ear canal is provided with microphone；The acquisition is believed by voice
Number and the echo signal that is generated in user ear canal of vibration signal, include:
The echo signal generated in user ear canal is acquired by microphone.
Further, described that impulse response is calculated according to human voice signal, vibration signal and echo signal, using following public affairs
Formula:
W (t)=(r (t)-e (t))/(s (t)+z (t))；
Wherein, w (t) is impulse response, and r (t) is echo signal, and s (t) is human voice signal, and z (t) is vibration signal, e (t)
For noise parameter, including ambient noise and circuit noise, noise when ambient noise is no human voice signal, by Mike's elegance
Collection, circuit noise is related to earphone build-in attribute, and circuit noise can be to preset.
The above, the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although referring to before
Stating embodiment, invention is explained in detail, those skilled in the art should understand that: it still can be to preceding
Technical solution documented by each embodiment is stated to modify or equivalent replacement of some of the technical features；And these
It modifies or replaces, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (10)
1. a kind of hearing aid gain processing method, which is characterized in that the described method includes:
Hearing aid obtains the outer acoustic input sound signal of user's ear；
Acoustic input sound signal is converted to frequency domain digital input signal by the hearing aid；
The frequency domain digital input signal frequency domain signal characteristic is extracted, determines acoustic input sound signal for noise signal still
Human voice signal；
If noise signal then carries out negative gain process；
If human voice signal, then judge to handle the vibration signal, and right there are when vibration signal in the hearing aid
Treated, and human voice signal carries out postiive gain processing.
2. hearing aid gain processing method according to claim 1, which is characterized in that described to be deposited in hearing aid judgement
In vibration signal, the vibration signal is handled, and human voice signal carries out postiive gain processing to treated, comprising:
The hearing aid judges whether that receiving the hearing aid is knocked generated vibration signal；
If receiving vibration signal, the hearing aid judges whether the intensity of the vibration signal is greater than default value；
Such as if more than default value, then the hearing aid handles the human voice signal；
To treated, human voice signal carries out postiive gain processing.
3. hearing aid gain processing method according to claim 2, which is characterized in that in the hearing aid and user ear canal
The position of contact is provided with vibrating sensor, can know whether the hearing aid is knocked by the vibrating sensor.
4. hearing aid gain processing method according to claim 2, which is characterized in that the hearing aid believes the voice
It number is handled, comprising:
The hearing aid amplifies the human voice signal.
5. hearing aid gain processing method according to claim 4, which is characterized in that the hearing aid believes the voice
It number amplifies, comprising:
The intensity that the hearing aid calculates vibration signal accounts for the ratio of the intensity of human voice signal, then according to the ratio enlargement voice
Signal.
6. hearing aid gain processing method according to claim 2, which is characterized in that the hearing aid believes the voice
It number is handled, comprising:
Acquire the echo signal generated in user ear canal by human voice signal and vibration signal；
Impulse response is calculated according to human voice signal, vibration signal and echo signal；
Judge within a preset time period, the number that impulse response occurs；
If number is greater than 3, the time difference between each impulse response is calculated；
If the time difference is fixed, without handling human voice signal；
If the time difference is not fixed, inverse noise identical with vibration signal opposite in phase, intensity is added in human voice signal
Signal.
7. hearing aid gain processing method according to claim 6, which is characterized in that the hearing aid is located at user ear canal
Interior position is provided with microphone；The acquisition is believed by the echo that human voice signal and vibration signal generate in user ear canal
Number, include:
The echo signal generated in user ear canal is acquired by microphone.
8. hearing aid gain processing method according to claim 7, which is characterized in that described according to human voice signal, vibration
Signal and echo signal calculate impulse response, using following formula:
W (t)=(r (t)-e (t))/(s (t)+z (t))；
Wherein, w (t) is impulse response, and r (t) is echo signal, and s (t) is human voice signal, and z (t) is vibration signal, and e (t) is to make an uproar
Sound parameter, including ambient noise and circuit noise, noise when ambient noise is no human voice signal, are acquired by microphone, electricity
Road noise sound is to preset.
9. hearing aid gain processing method according to claim 1, which is characterized in that acoustics is inputted sound by the hearing aid
Sound signal is converted to frequency domain digital input signal, comprising:
Acoustic input sound signal is converted to time-domain digital input signal by the hearing aid；
The hearing aid makees time domain/frequency domain conversion to time domain digital input signals and obtains frequency domain digital input signal.
10. hearing aid gain processing method according to claim 1, which is characterized in that described to extract the frequency domain digital
Input signal frequency domain signal characteristic determines that acoustic input sound signal is noise signal or human voice signal, comprising:
To the frequency domain digital input signal, the feature of each frequency separation in multiple frequency separations is extracted, judges that the acoustics is defeated
Entering voice signal is noise signal or human voice signal.
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