CN103200511B - The digital hearing-aid of built-in sound field check and evaluation system and method thereof - Google Patents
The digital hearing-aid of built-in sound field check and evaluation system and method thereof Download PDFInfo
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- CN103200511B CN103200511B CN201310106522.5A CN201310106522A CN103200511B CN 103200511 B CN103200511 B CN 103200511B CN 201310106522 A CN201310106522 A CN 201310106522A CN 103200511 B CN103200511 B CN 103200511B
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Abstract
The invention discloses a kind of digital hearing-aid of built-in sound field check and evaluation system.Comprise voice pick device, A/D conversion equipment, the first digital signal carried out to the microprocessor of data processing, the second digital signal obtained be converted to D/A conversion equipment and the instantaneous speech power of the second analog signal.Microprocessor comprises order input module, determines whether to enter sound field detection; Memory module: the pure tone information storing the various decibel of various frequency; Sound field detection module, the pure tone information according to memory module exports the sound under certain frequency; Speech gain and signal noise processing module: voice signal is amplified and noise reduction process; The hearing aids of the sound field evaluating system that the present invention is built-in can assess the effect of hearing aid fitting, judges whether the compensation of hearing aids reaches the normal threshold of audibility, to testing teacher of the joining and patient provides an objective evaluation foundation easily and effectively.
Description
Technical field
The present invention relates to a kind of hearing aids, especially a kind of hearing aids of built-in sound field check and evaluation system and method thereof.
Background technology
Dysacousis is a kind of common disease, seriously hinders the life of people, study and work.Otologic development makes most hearing loss can be cured by the mode of medicine or operation, and retains to a certain extent or improve one's hearing.But for the patient of sensorineural hearing loss, there is no clear and definite medicine or operative treatment means reliably at present, the Prosthesis such as hearing aids, artificial cochlea can only be relied on to help hearing patient and repair hearing.
The essence of hearing aids is a sound intensifier.Sound amplifies by some way, makes to listen barrier patient can effectively utilize its residual hearing.The patient of different hearing loss, shows the dysaudia varied.The raising of patient's hearing threshold, abnormal to loudness sensation, it is all the problem that dysaudia is brought that speech resolution capability declines.How to select suitable hearing aids, the performance parameter of adjustment hearing aids, makes it to listen the dysaudia hindering patient to match with each, to reach best hearing compensation effect, being the most root problem that hearing aids selection personnel need to solve, is also the key point that patient realizes rehabilitation.
The audiometric curve feature that the actual hearing of digital hearing aid needs foundation individual patients draws after testing and joining carries out hearing compensation to patient.The hearing loss situation of different patient is different, and same patient also presents different features in the hearing loss of different frequency.
Hearing aid fitting well after, test after wear hearing aid, whether the compensation having a look hearing aids reaches the normal threshold of audibility, the testing of usual hearing aids is joined effect and is comprised functional gain, speech recognition ability is tested, the method of questionnaire or interview determines the benefited intensity of hearing aid user, but the subjective factor of current several assessment mode doping is larger, assess not accurate enough, test whether join effect be optimum Match, whether compensating gain gain that is whether effective to patient or actual reception is suitable, 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 of equipment volume is comparatively large and price is very high, and except a few high-end hearing center is equipped with, most of hearing aid fitting shop is not equipped with.
Summary of the invention
The object of the invention is to solve of the prior artly cannot facilitate, the technical problem of hearing aid fitting effect being carried out to objective evaluation of effective, low cost, provide a kind of digital hearing-aid and method thereof of built-in sound field check and evaluation system.
A digital hearing-aid for built-in sound field check and evaluation system, comprise voice pick device, A/D conversion equipment, microprocessor, D/A conversion equipment, instantaneous speech power, described microprocessor comprises:
Order input module: determine whether that entering sound field evaluation profile carries out sound field detection or directly enter speech gain and signal noise processing module;
Memory module: the pure tone information storing the various decibel of various frequency;
Sound field detection module, according to the pure tone information output sound of memory module;
Speech gain and signal noise processing module: amplification is carried out to voice signal and processes;
Wherein order input module, sound field detection module, speech gain are connected in turn with signal noise processing module, and memory module is connected with sound field detection module.
The pure tone information of the specific size decibel under the characteristic frequency that described sound field detection module foundation memory module sends, after amplifying process, can hear that the sound after amplification judges whether the compensation of hearing aids reaches the normal threshold of audibility by patient, thus evaluate and test and join effect.
Described sound field detection module to be integrated in dsp chip and to be implanted in described digital deaf-aid body.
An implementation method for described digital hearing-aid, comprises the steps:
(1) voice pick device obtains voice signal, exports the first analog signal;
(2) first analog signal input A/D conversion equipments, export the first digital signal;
(3) enter sound field evaluation profile to carry out sound field and detect when microprocessor receives the sound field sense command of input and join effect assess testing, sound field detects the tonal signal sent and outputs to the second digital signal through speech gain and signal noise process; Or directly do not enter speech gain when microprocessor receives sound field sense command and signal noise process exports the second digital signal;
(4) second digital signal input D/A conversion equipments, export the second analog signal;
(5) instantaneous speech power receives the second analog signal, output sound.
In described step (3),
(3.1) sound field detection module: the pure tone sending out at 250Hz, 500Hz, 1KHz, 2KHz, 3KHz, 4KHz, 6KHz place decibel size respectively different, the upper limit is 65dB, successively successively decreases with 5dB, and lower limit is 20dB, outputs to speech gain and signal noise processing module;
(3.2) acoustic information received is carried out amplifying and noise reducing process by speech gain and signal noise processing module.
Due to 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 of built-in sound field evaluating system, utilize actual input command to judge whether and enter sound field evaluation profile and carry out sound field check processing, achieve the sound field evaluation function of digital deaf-aid, make the sound field assessment of digital deaf-aid intelligent.Adopt digital hearing-aid involved in the present invention, can easily and effectively assess to test and join effect, detect the gain of hearing aids and whether reach suitable compensation, to testing teacher of the joining and patient provides an easily and effectively objective evaluation foundation.
Accompanying drawing explanation
Fig. 1 is the digital hearing-aid structural representation of built-in sound field check and evaluation system;
Fig. 2 is that the digital hearing-aid of built-in sound field check and evaluation system joins software connection diagram with testing;
Fig. 3 is the WDRC voice compensation gain module schematic flow sheet of digital signal processor;
Fig. 4 is the audiogram that patient wears before hearing aids of the present invention;
Fig. 5 is the audiogram that patient wears after hearing aids of the present invention;
Wherein: 1, the first analog signal; 2, the first digital signal; 3, the second digital signal; 4, the second analog signal.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described further.
A digital hearing-aid for built-in sound field evaluating system, 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 that entering sound field evaluation profile carries out sound field detection or directly carry out speech gain and signal noise process;
Memory module: the pure tone information storing the various decibel of various frequency;
Sound field detection module, receive the pure tone information of memory module export certain frequency under sound;
Speech gain and signal noise processing module: amplification is carried out to voice signal and processes;
Wherein order input module, sound field detection module, speech gain are connected in turn with signal noise processing module, and 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, entered after amplifying process, can hear that the sound after amplification judges whether the compensation of hearing aids reaches the normal threshold of audibility by patient, thus evaluate and test and join effect.
Sound field detection module to be integrated in dsp chip and to be implanted in described digital deaf-aid body.
The implementation method of digital hearing-aid, comprises the steps:
(1) voice pick device obtains voice signal, exports the first analog signal;
(2) first analog signal input A/D conversion equipments, export the first digital signal;
(3) sound field detection is carried out when microprocessor receives when input enters the order of sound field evaluation profile; Sound field detects the tonal signal sent and exports the second digital signal through speech gain and signal noise process; Or directly carry out speech gain constantly and signal noise process exports the second digital signal when microprocessor does not receive the order entering sound field evaluation profile;
(4) second digital signal input D/A conversion equipments, export the second analog signal;
(5) instantaneous speech power receives the second analog signal, output sound.
In step (3),
(3.1) sound field detection module: the pure tone sending out at 250Hz, 500Hz, 1KHz, 2KHz, 3KHz, 4KHz, 6KHz place decibel size respectively different, the upper limit is 65dB, successively successively decreases with 5dB, and lower limit is 20dB, outputs to speech gain and signal noise processing module;
(3.2) acoustic information received is carried out amplifying and noise reducing process by speech gain and signal noise processing module;
Digital deaf-aid as shown in Figure 1, comprise voice pick device, A/D conversion equipment that the first analog signal 1 of being received by voice pick device converts the first digital signal 2 to, the first digital signal 1 carried out to the microprocessor of data processing, the second digital signal 3 obtained be converted to D/A conversion equipment and the instantaneous speech power of the second analog signal 4, wherein, microprocessor comprises:
Order input module: determine whether that entering sound field evaluation profile carries out sound field detection or directly enter speech gain and signal noise processing module;
Memory module: the pure tone information storing the various decibel of various frequency;
Sound field detection module, the pure tone information according to memory module exports the sound under certain frequency;
Speech gain and signal noise processing module: carry out amplification to voice signal and process, export the second digital signal to D/A conversion equipment.
Embodiment
In order to actual effect of the present invention and feature are better described, contrast for the audiogram that a patient wears before and after built-in Hearing esamination hearing aids of the present invention.Audiogram information before this patient's wear hearing aid as shown in Figure 4.
The audiometric curve of patient declines comparatively even in whole frequency domain, before wearing hearing aids of the present invention, the Hearing Threshold of this patient is about 90dB at 1KHz place, after the hearing aids wearing built-in sound field check and evaluation system of the present invention, after experience teacher of the joining tests and joins first time, built-in sound field check and evaluation system is utilized to assess, sound field detection module sends 65dB sound, this sound imports patient's ear into after system is amplified, if patient can hear, after then showing wear hearing aid, Hearing Threshold is better than 65dB, then sound field detection module can continue to send out 60dB sound, can test patient be heard, continue to find the Hearing Threshold of patient at 1KHz place, if the 1KHz that sound field detection module sends, 65dB sound patient can't hear, then show that the Hearing Threshold after patient's wear hearing aid is still gone bad in 65dB, test that to join effect bad, test teacher of the joining should continue adjustment and test and join parameter, until the hearing improved effect after sound field detection module assessment display patient wear hearing aid is in tolerance interval, then show to test to be made into merit, terminate to test to join.Fig. 5 curve is depicted as the Hearing Threshold figure after the patient's wear hearing aid recorded after the assessment of sound field detection module, clearly can see that the Hearing Threshold of this patient is about 33dB at 1KHz place.The compensation gain of hearing-aid at all the other each frequency places refers to Fig. 5, shows testing of hearing aids very intuitively and joins effect, to testing teacher of the joining and patient provides an easily and effectively objective evaluation foundation.
Should be understood that present embodiment is only not used in for illustration of the present invention to limit the scope of the invention.In addition should be understood that those skilled in the art can make various changes or modifications the present invention after having read content disclosed by the invention, these equivalences or equivalents fall within the scope that the application's appended claims is protected equally.
Claims (3)
1. a digital hearing-aid for built-in sound field check and evaluation 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 that entering sound field evaluation profile carries out sound field detection or directly enter speech gain and signal noise processing module;
Memory module: the pure tone information storing the various decibel of various frequency;
Sound field detection module, according to the pure tone information output sound of memory module;
Speech gain and signal noise processing module: amplification is carried out to voice signal and processes;
Wherein order input module, sound field detection module, speech gain are connected in turn with signal noise processing module, and memory module is connected with sound field detection module;
The pure tone information of the specific size decibel under the characteristic frequency that described sound field detection module foundation memory module sends, after speech gain and signal noise processing module amplify and process, can hear that the sound after amplification judges whether the compensation of hearing aids reaches the normal threshold of audibility by patient, thus evaluate and test and join effect;
Described sound field detection module to be integrated in dsp chip and to be implanted in described digital deaf-aid body.
2. an implementation method for digital hearing-aid as claimed in claim 1, is characterized in that, comprises the steps:
(1) voice pick device obtains voice signal, exports the first analog signal;
(2) first analog signal input A/D conversion equipments, export the first digital signal;
(3) enter sound field evaluation profile to carry out sound field and detect when microprocessor receives the sound field sense command of input and join effect assess testing, sound field detects the tonal signal sent and exports the second digital signal through speech gain and signal noise process; Or directly do not enter speech gain when microprocessor receives sound field sense command and signal noise process exports the second digital signal;
(4) second digital signal input D/A conversion equipments, export the second analog signal;
(5) instantaneous speech power receives the second analog signal, output sound.
3. according to claim
2described method, is characterized in that, in described step (3),
(3.1) sound field detection module: the pure tone sending out at 250Hz, 500Hz, 1KHz, 2KHz, 3KHz, 4KHz, 6KHz place decibel size respectively different, the upper limit is 65dB, successively successively decreases with 5dB, and lower limit is 20dB, outputs to speech gain and signal noise processing module;
(3.2) acoustic information received is carried out amplifying and noise reducing process by speech gain and signal noise processing module.
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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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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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