CN103200511A - Digital hearing-aid with built-in sound field detection and evaluation system and realizing method of digital hearing-aid - Google Patents
Digital hearing-aid with built-in sound field detection and evaluation system and realizing method of digital hearing-aid Download PDFInfo
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Abstract
The invention discloses a digital hearing-aid with a built-in sound field detection and evaluation system. The digital hearing-aid comprises a voice pickup device, an analog to digital (A/D) converter, a microprocessor, a digital to analog (D/A) converter and a voice output device. The microprocessor is used for carrying out data processing on first digital signals. The D/A converter is used for converting obtained second digital signals to second analog signals. The microprocessor comprises a command input module, a storage module, a sound field detection module and a voice gain and signal noise processing module. The command input module is used for confirming whether to enter a sound field detection link. The storage module is used for storing pure tone information with various frequencies and various decibels. The sound field detection module is used for outputting sound under a certain frequency according to the pure tone information of the storage module. The voice gain and signal noise processing module is used for carrying out amplifying and denoising processing on voice signals. The digital hearing-aid with the built-in sound field detection and evaluation system can be used for evaluating testing and fitting effects, and judging whether compensation of the hearing-aid reaches a normal auditory threshold, so the digital hearing-aid with the built-in sound field detection and evaluation system provides a convenient and effective objective evaluation basis for testing and fitting consultants and patients.
Description
Technical field
The present invention relates to a kind of hearing aids, especially a kind of built-in sound field detects hearing aids and the method thereof of evaluating system.
Background technology
Dysacousis is a kind of common disease, is seriously hindering people's life, study and work.Otologic development makes most hearing loss to be cured by the mode of medicine or operation, and keeps to a certain extent or improve one's hearing.But for the patient of sensorineural hearing loss, still do not have clear and definite medicine or operative treatment means reliably at present, can only rely on Prosthesises such as hearing aids, artificial cochlea to help the hearing patient and repair hearing.
The essence of hearing aids is a sound intensifier.It amplifies sound in some way, makes to listen the barrier patient can effectively utilize its residual hearing.The patient of different hearing losses shows the dysaudia that varies.The raising of patient's hearing threshold, unusual to loudness sensation, it all is the problem that dysaudia is brought that the speech resolution capability descends.How to select suitable hearing aids, adjust the performance parameter of hearing aids, make it to be complementary with each tin barrier patient's dysaudia, to reach best hearing compensation effect, being the root problem that the hearing aids selection personnel need solve, also is the key point that the patient realizes rehabilitation.
Digital hearing aid need be tested the audiometric curve feature that draws after joining according to the actual hearing of individual patients the patient is carried out hearing compensation.Different patients' hearing loss situation is different, and same patient also presents different characteristics in the hearing loss of different frequency.
Hearing aid fitting well after, wear hearing aids to test afterwards, whether the compensation of having a look hearing aids reaches the normal threshold of audibility, usually testing of hearing aids joined effect and comprised functional gain, the speech recognition ability test, the method of questionnaire or interview is determined the benefited intensity of hearing aid user, but the subjective factor that present several assessment modes mix is bigger, assess not accurate enough, test whether join effect be optimum Match, whether whether compensating gain suitable to the effective or actual gain that receives of patient, and the answer of these problems still lacks effective objective basis.The objective evaluation of hearing aid fitting effect is mainly tested by the large-scale sound field checkout equipment of specialty, and this kind equipment volume is big and price is very high, and except a few high-end hearing center was equipped with, most of hearing aid fitting shop was not equipped with.
Summary of the invention
The objective of the invention is to solve the technical problem that can't make things convenient for, effectively, cheaply the hearing aid fitting effect be carried out objective evaluation of the prior art, provide a kind of built-in sound field to detect digital hearing aid device and the method thereof of evaluating system.
A kind of built-in sound field detects the digital hearing aid device of evaluating system, comprises voice pick device, A/D conversion equipment, microprocessor, D/A conversion equipment, instantaneous speech power, and described microprocessor comprises:
Order input module: determine whether to enter the sound field evaluation profile and carry out the sound field detection or directly enter voice gain and signal noise processing module;
Memory module: the pure tone information of storing the various decibels of various frequencies;
The sound field detection module is according to the pure tone information output sound of memory module;
Voice gain and signal noise processing module: voice signal is amplified processing;
Wherein order input module, sound field detection module, voice gain to link to each other in turn with the signal noise processing module, memory module is connected with the sound field detection module.
The pure tone information of the specific size decibel under the characteristic frequency that described sound field detection module sends according to memory module, after amplifying processing, can hear by the patient sound after the amplification judges whether the compensation of hearing aids reaches the normal threshold of audibility, join effect thereby estimate to test.
Described sound field detection module is integrated in the dsp chip and is implanted in the described digital deaf-aid body.
A kind of implementation method of described digital hearing aid device comprises the steps:
(1) the voice pick device obtains voice signal, exports first analog signal;
(2) first analog signals input A/D conversion equipment is exported first digital signal;
(3) enter the sound field evaluation profile when microprocessor receives the sound field sense command of input and carry out sound field and detect and to join effect and assess testing, sound field detects the pure tone signal that sends and handles with signal noise through the voice gain and output to second digital signal; Perhaps when microprocessor does not receive the sound field sense command, directly enter the voice gain and handle output second digital signal with signal noise;
(4) second digital signals input D/A conversion equipment is exported second analog signal;
(5) instantaneous speech power receives second analog signal, output sound.
In the described step (3),
(3.1) sound field detection module: at 250Hz, 500Hz, 1KHz, 2KHz, 3KHz, 4KHz, the pure tones of different decibel sizes are sent out at the 6KHz place respectively, on be limited to 65dB, successively decrease one by one with 5dB, be limited to 20dB down, output to voice gain and signal noise processing module;
(3.2) the voice gain is carried out the amplifying and noise reducing processing with the signal noise processing module with the acoustic information that receives.
Because the employing of technique scheme, the present invention compared with prior art has the following advantages:
The present invention proposes a kind of implementation method of digital hearing aid device of built-in sound field evaluating system, utilize actual input command to judge whether to enter the sound field evaluation profile and carry out sound field detection processing, realized the sound field evaluation function of digital deaf-aid, made that the sound field assessment of digital deaf-aid is intelligent.Adopt digital hearing aid device involved in the present invention, can assess easily and effectively to test and join effect, whether the gain that detects hearing aids reaches suitable compensation, gives to test teacher of the joining and the patient provides an objective evaluation foundation easily and effectively.
Description of drawings
Fig. 1 is the digital hearing aid device structural representation that built-in sound field detects evaluating system;
Fig. 2 detects the digital hearing aid device of evaluating system for built-in sound field and tests and join the software connection diagram;
Fig. 3 is the WDRC voice compensation gain module schematic flow sheet of digital signal processor;
Fig. 4 is the audiogram before the patient wear hearing aids of the present invention;
Fig. 5 is the audiogram after the patient wear hearing aids of the present invention;
Wherein: 1, first analog signal; 2, first digital signal; 3, second digital signal; 4, second analog signal.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described further.
A kind of digital hearing aid device of built-in sound field evaluating system, it comprises voice pick device, A/D conversion equipment, microprocessor, D/A conversion equipment, instantaneous speech power, described microprocessor comprises:
Order input module: determine whether to enter the sound field evaluation profile and carry out the sound field detection or directly carry out voice gain and signal noise processing;
Memory module: the pure tone information of storing the various decibels of various frequencies;
The sound field detection module, the pure tone information of reception memory module is exported the sound under certain frequency;
Voice gain and signal noise processing module: voice signal is amplified processing;
Wherein order input module, sound field detection module, voice gain to link to each other in turn with the signal noise processing module, the sound field detection module is connected with memory module.
The pure tone information of the specific size decibel under the characteristic frequency that built-in sound field detection module sends according to the acoustic information of memory module, after advancing to amplify processing, can hear by the patient sound after the amplification judges whether the compensation of hearing aids reaches the normal threshold of audibility, join effect thereby estimate to test.
The sound field detection module is integrated in the dsp chip and is implanted in the described digital deaf-aid body.
The implementation method of digital hearing aid device comprises the steps:
(1) the voice pick device obtains voice signal, exports first analog signal;
(2) first analog signals input A/D conversion equipment is exported first digital signal;
(3) carry out sound field when input enters the order of sound field evaluation profile and detect when microprocessor receives; Sound field detects the pure tone signal that sends and handles output second digital signal through voice gain and signal noise; Perhaps when receiving the order that enters the sound field evaluation profile, microprocessor directly do not carry out voice gain and signal noise processing output second digital signal constantly;
(4) second digital signals input D/A conversion equipment is exported second analog signal;
(5) instantaneous speech power receives second analog signal, output sound.
In the step (3),
(3.1) sound field detection module: at 250Hz, 500Hz, 1KHz, 2KHz, 3KHz, 4KHz, the pure tones of different decibel sizes are sent out at the 6KHz place respectively, on be limited to 65dB, successively decrease one by one with 5dB, be limited to 20dB down, output to voice gain and signal noise processing module;
(3.2) the voice gain is carried out the amplifying and noise reducing processing with the signal noise processing module with the acoustic information that receives;
Digital deaf-aid as shown in Figure 1, first analog signal 1 that comprises the voice pick device, the voice pick device is received converts the A/D conversion equipment of first digital signal 2 to, to first digital signal 1 is carried out microprocessor that data handle, second digital signal 3 that will obtain is converted to second analog signal 4 D/A conversion equipment and instantaneous speech power, wherein, microprocessor comprises:
Order input module: determine whether to enter the sound field evaluation profile and carry out the sound field detection or directly enter voice gain and signal noise processing module;
Memory module: the pure tone information of storing the various decibels of various frequencies;
The sound field detection module is exported sound under certain frequency according to the pure tone information of memory module;
Voice gain and signal noise processing module: voice signal is amplified processing, export second digital signal to the D/A conversion equipment.
Embodiment
For better explanation actual effect of the present invention and characteristics, be that example is worn the audiogram that built-in hearing of the present invention detects before and after the hearing aids and compared with a patient.Audiogram information before this patient wear hearing aids as shown in Figure 4.
Patient's audiometric curve descends comparatively even in whole frequency domain, before wearing hearing aids of the present invention, this patient's hearing threshold value is about 90dB at the 1KHz place, behind the hearing aids of wearing built-in sound field detection evaluating system of the present invention, after experience teacher of the joining tests for the first time and joins, utilizing built-in sound field to detect evaluating system assesses, the sound field detection module sends 65dB sound, this sound imports patient's ear into after system amplifies, if the patient can hear, then show wear hearing aids after the hearing threshold value be better than 65dB, then the sound field detection module can continue to send out 60dB sound, can test patient be heard, continue to seek the patient in the hearing threshold value at 1KHz place, if the 1KHz that the sound field detection module sends, 65dB sound patient can't hear, show that then the hearing threshold value behind the patient wear hearing aids still goes bad in 65dB, test that to join effect bad, testing teacher of the joining should continue to adjust to test to join parameter, improve effect in tolerance interval until show the hearing behind the patient wear hearing aids through the assessment of sound field detection module, then show to test to be made into merit, finish to test to join.Fig. 5 curve is depicted as the hearing threshold figure behind the patient wear hearing aids that records after the sound field detection module is assessed, can see clearly that this patient's hearing threshold value is about 33 dB at the 1KHz place.The gain of the hearing compensation at all the other each frequency places sees Fig. 5 for details, has shown that very intuitively testing of hearing aids join effect, gives to test teacher of the joining and the patient provides an objective evaluation foundation easily and effectively.
Should be understood that present embodiment only to be used for explanation the present invention and be not used in and limit the scope of the invention.Should be understood that in addition after having read content disclosed by the invention, those skilled in the art can make various changes or modifications the present invention, these equivalences or equivalents fall within the scope that the application's appended claims is protected equally.
Claims (5)
1. the digital hearing aid device of a built-in sound field detection evaluating system is characterized in that it comprises voice pick device, A/D conversion equipment, microprocessor, D/A conversion equipment, instantaneous speech power, and described microprocessor comprises:
Order input module: determine whether to enter the sound field evaluation profile and carry out the sound field detection or directly enter voice gain and signal noise processing module;
Memory module: the pure tone information of storing the various decibels of various frequencies;
The sound field detection module is according to the pure tone information output sound of memory module;
Voice gain and signal noise processing module: voice signal is amplified processing;
Wherein order input module, sound field detection module, voice gain to link to each other in turn with the signal noise processing module, memory module is connected with the sound field detection module.
2. digital deaf-aid according to claim 1, it is characterized in that, the pure tone information of the specific size decibel under the characteristic frequency that described sound field detection module sends according to memory module, after amplifying processing, can hear by the patient sound after the amplification judges whether the compensation of hearing aids reaches the normal threshold of audibility, join effect thereby estimate to test.
3. digital deaf-aid according to claim 1 is characterized in that, described sound field detection module is integrated in the dsp chip and is implanted in the described digital deaf-aid body.
4. the implementation method of a digital hearing aid device as claimed in claim 1 is characterized in that, comprises the steps:
(1) the voice pick device obtains voice signal, exports first analog signal;
(2) first analog signals input A/D conversion equipment is exported first digital signal;
(3) enter the sound field evaluation profile when microprocessor receives the sound field sense command of input and carry out sound field and detect and to join effect and assess testing, sound field detects the pure tone signal that sends and handles with signal noise through the voice gain and output to second digital signal; Perhaps when microprocessor does not receive the sound field sense command, directly enter the voice gain and handle output second digital signal with signal noise;
(4) second digital signals input D/A conversion equipment is exported second analog signal;
(5) instantaneous speech power receives second analog signal, output sound.
5. method according to claim 4 is characterized in that, in the described step (3),
(3.1) sound field detection module: at 250Hz, 500Hz, 1KHz, 2KHz, 3KHz, 4KHz, the pure tones of different decibel sizes are sent out at the 6KHz place respectively, on be limited to 65dB, successively decrease one by one with 5dB, be limited to 20dB down, output to voice gain and signal noise processing module;
(3.2) the voice gain is carried out the amplifying and noise reducing processing with the signal noise processing module with the acoustic information that receives.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106658324A (en) * | 2017-03-10 | 2017-05-10 | 深圳市吸铁石科技有限公司 | Hearing aid with verification function and verification method |
| CN113327569A (en) * | 2021-05-18 | 2021-08-31 | 杭州爱思维仪器有限公司 | Noise reduction method, system and device for pure-tone audiometer |
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| CN101621729A (en) * | 2009-07-20 | 2010-01-06 | 厦门新声科技有限公司 | Method for automatically debugging audiphones |
| CN102118676A (en) * | 2011-03-28 | 2011-07-06 | 杭州英驰医疗科技有限公司 | Digital hearing aid and method for adjusting parameters thereof by using sound from dual-tone multi-frequency key |
| WO2011109212A1 (en) * | 2010-03-03 | 2011-09-09 | Schumaier, Daniel, R. | Preprogrammed hearing assistance device with audiometric testing capability |
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| CN101621729A (en) * | 2009-07-20 | 2010-01-06 | 厦门新声科技有限公司 | Method for automatically debugging audiphones |
| WO2011109212A1 (en) * | 2010-03-03 | 2011-09-09 | Schumaier, Daniel, R. | Preprogrammed hearing assistance device with audiometric testing capability |
| CN102118676A (en) * | 2011-03-28 | 2011-07-06 | 杭州英驰医疗科技有限公司 | Digital hearing aid and method for adjusting parameters thereof by using sound from dual-tone multi-frequency key |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106658324A (en) * | 2017-03-10 | 2017-05-10 | 深圳市吸铁石科技有限公司 | Hearing aid with verification function and verification method |
| CN113327569A (en) * | 2021-05-18 | 2021-08-31 | 杭州爱思维仪器有限公司 | Noise reduction method, system and device for pure-tone audiometer |
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