CN104144374B - Assisting hearing method and system based on mobile device - Google Patents
Assisting hearing method and system based on mobile device Download PDFInfo
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- CN104144374B CN104144374B CN201310163702.7A CN201310163702A CN104144374B CN 104144374 B CN104144374 B CN 104144374B CN 201310163702 A CN201310163702 A CN 201310163702A CN 104144374 B CN104144374 B CN 104144374B
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Abstract
Description
Test result | The speech frequency averaging threshold of audibility(Deafness) |
Normally | Less than 26dBHL |
Mild deafness | 26-40dBHL |
Moderate is deaf | 41-60dBHL |
Severe is deaf | 61-80dBHL |
Pole severe is deaf | More than 80dBHL |
Frequency(Hz) | Insertion gain(dBHL) |
250 | 1/2HTL-10 |
500 | 1/2HTL-5 |
1000 | 1/2HTL |
2000 | 1/2HTL |
3000 | 1/2HTL |
4000 | 1/2HTL |
Claims (25)
- A kind of 1. assisting hearing method based on mobile device, it is characterised in that including:The test tone of multiple frequencies is exported, to test the threshold of audibility of the user under the multiple frequency, and according to the user in institute State the threshold of audibility generation audiogram under multiple frequencies;The hearing loss types of the user are judged according to the audiogram, are selected according to the hearing loss types corresponding Apolegamy prescriptive formula;The testing with parameter of the user is determined according to the apolegamy prescriptive formula and audiogram;Voice signal is gathered, and the voice signal is made with parameter to improve the processing of speech discrimination score according to testing for the user After play out;Wherein, determine that testing for the user includes with the step of parameter according to the apolegamy prescriptive formula and audiogram:Each frequency partition is entered into corresponding passage;Obtain default pain domain and flex point;The input-output curve of each passage is determined according to the apolegamy prescriptive formula and audiogram;The linear, amplification portion of each input-output curve and non-linear is determined according to the input-output curve, pain domain and flex point The insertion gain of amplifier section;Voice signal is gathered, and the voice signal is made with parameter to improve the processing of speech discrimination score according to testing for the user After the step of playing out include:Voice signal is gathered, and LPF is carried out to the voice signal;Voice signal after LPF is subjected to analog-to-digital conversion, to generate data signal;The numeral is believed according to the insertion gain of the linear, amplification portion of each input-output curve and non-linear amplifier section Number make the processing of multichannel compensating for frequency response;Data signal by the processing of multichannel compensating for frequency response is subjected to digital-to-analogue conversion, to generate voice and play out.
- 2. the assisting hearing method based on mobile device as claimed in claim 1, it is characterised in that export the survey of multiple frequencies Audition, the threshold of audibility of the test user under the multiple frequency, and generated according to the threshold of audibility of the user under the multiple frequency The step of audiogram, includes:The test tone of multiple frequencies is sequentially output, and tests the threshold of audibility of the user under the multiple frequency successively;If threshold of audibility difference of the user under first frequency and last frequency is less than or equal to 5dBHL, two times are judged Whether the threshold of audibility difference of frequent rate is more than or equal to 20dBHL;If it is not, the threshold of audibility according to the user under the multiple frequency Generate audiogram;If so, the threshold of audibility of half frequency multiplication frequency between then testing described two frequency multiplication frequencies, and according to described half The threshold of audibility generation audiogram of the threshold of audibility of frequency multiplication frequency and the user under the multiple frequency;If threshold of audibility difference of the user under first frequency and last frequency is more than 5dBHL, user is tested successively again The threshold of audibility under the multiple frequency, until first frequency is differed with the threshold of audibility under last frequency and be less than or equal to Untill 5dBHL, and judge whether the threshold of audibility difference of two frequency multiplication frequencies is more than or equal to 20dBHL, if it is not, according to last time Threshold of audibility generation audiogram of the user of test under the multiple frequency;If so, then test described two frequency multiplication frequencies it Between half frequency multiplication frequency the threshold of audibility, and according to the user of the threshold of audibility of half frequency multiplication frequency and last time test in the multiple frequency Under the threshold of audibility generation audiogram.
- 3. the assisting hearing method based on mobile device as claimed in claim 2, it is characterised in that in the multiple frequency One frequency is identical with last frequency.
- 4. the assisting hearing method based on mobile device as claimed in claim 3, it is characterised in that the multiple frequency bag Include:1000Hz、2000Hz、3000Hz、4000Hz、6000Hz、8000Hz、250Hz、500Hz、1000Hz.
- 5. the assisting hearing method based on mobile device as claimed in claim 2, it is characterised in that user is in each frequency for test The step of threshold of audibility under rate, includes:Step 1:Hearing level initial value of the user under current frequency is obtained, and starts output test tone, at the beginning of the test tone Beginning hearing level is that hearing level initial value of the user under current frequency subtracts 10dBHL, if user does not hear test tone, with 5dBHL One grade of increase intensity, until user hears test tone;Step 2:After user hears test tone, with mono- grade of 10dBHL reduction intensity, until user does not hear test tone, then with Mono- grade of increase intensity of 5dBHL, until user hears test tone, then records the current hearing level of the test tone;Repeat step 2 three times more than after, judge whether the current hearing level that wherein records three times is same hearing level, if It is no, continue executing with step 2 three times more than, until the hearing level current three times recorded again be same hearing level untill, then record The same hearing level is the threshold of audibility under the current frequency.
- 6. the assisting hearing method based on mobile device as described in any one in claim 1 to 5, it is characterised in that institute Stating hearing loss types includes conduction deafness, perceptive deafness and mixed deafness.
- 7. the assisting hearing method based on mobile device as claimed in claim 6, it is characterised in that when the hearing loss class When type is perceptive deafness, it is POGO or NAL-RP to select corresponding apolegamy prescriptive formula.
- 8. the assisting hearing method based on mobile device as claimed in claim 6, it is characterised in that when the hearing loss class When type is conduction deafness or mixed deafness, it is DSL [i/o] or IHAFF to select corresponding apolegamy prescriptive formula.
- 9. the assisting hearing method based on mobile device as claimed in claim 1, it is characterised in that collection voice signal, and According to the user test with parameter to the voice signal make improve speech discrimination score processing after play out the step of also Including:Make the processing of speech enhan-cement to the data signal;Wherein, according to the insertion gain of the linear, amplification portion of each input-output curve and non-linear amplifier section to by language The data signal of sound enhancing processing makees the processing of multichannel compensating for frequency response.
- 10. the assisting hearing method based on mobile device as claimed in claim 9, it is characterised in that when mobile device is single During Mike, the method for the processing of the speech enhan-cement is using the comb filter method of the quasi periodic denoising of voice, based on mould Any of the Kalman filtering method of type class, the spectrum-subtraction based on spectral amplitude estimation class or Wiener Filter Method.
- 11. the assisting hearing method based on mobile device as claimed in claim 9, it is characterised in that when mobile device is wheat During gram wind array, the method for the processing of the speech enhan-cement is the undistorted response of minimum variance in Adaptive beamformer method Any of Beam-former, linear restriction minimum method Beam-former or generalized side lobe canceller.
- 12. the assisting hearing method based on mobile device as described in claim 1 or 9, it is characterised in that the multichannel frequency The processing method for ringing compensation is following any:Using interpolation half-band filter, the equally distributed wave filter group of equiband is realized;OrCoordinate multiple harmonic oscillators to digital signal frequency split using comb filter, and by each railway digital signal weighting phase after frequency dividing Add output;OrIt is right according to frequency domain gain design time domain filtering using LOUDNESS formula and frequency domain sampling FIR filter design method The digital signal filter of input.
- 13. the assisting hearing method based on mobile device as claimed in claim 1, it is characterised in that the test tone is pure One or more in sound, twiter sound or pulse sound.
- A kind of 14. assisting hearing system based on mobile device, it is characterised in that including:Audiometry module, for exporting the test tone of multiple frequencies, to test the threshold of audibility of the user under the multiple frequency, and according to Threshold of audibility generation audiogram of the user under the multiple frequency;Test and match somebody with somebody module, for judging the hearing loss types of the user according to the audiogram, damaged according to the hearing Lose type selecting and match prescriptive formula accordingly, testing for the user is determined according to the apolegamy prescriptive formula and audiogram With parameter;Assisting hearing module, the voice signal is carried with parameter for gathering voice signal, and according to testing for the user Played out after the processing of high speech discrimination score;Wherein, it is described to test with module, for each frequency partition to be entered into corresponding passage;Obtain default pain domain and flex point;Root The input-output curve of each passage is determined according to the apolegamy prescriptive formula and audiogram;It is bent according to the input and output Line, pain domain and flex point determine the linear, amplification portion of each input-output curve and the insertion gain of non-linear amplifier section;The assisting hearing module includes:Low-pass filter unit, LPF is carried out for gathering voice signal, and to the voice signal;AD conversion unit, for the voice signal after LPF to be carried out into analog-to-digital conversion, to generate data signal;Compensating for frequency response unit, the intervention for the linear, amplification portion according to each input-output curve and non-linear amplifier section The processing of multichannel compensating for frequency response is made in gain to the data signal;D/A conversion unit, for the data signal by the processing of multichannel compensating for frequency response to be carried out into digital-to-analogue conversion, with generation Voice simultaneously plays out.
- 15. the assisting hearing system based on mobile device as claimed in claim 14, it is characterised in that the audiometry module bag Include:Output unit, for being sequentially output the test tone of multiple frequencies;Audiogram unit, for testing the threshold of audibility of the user under the multiple frequency successively;If user is in first frequency It is less than or equal to 5dBHL with the threshold of audibility difference under last frequency, then judges whether the threshold of audibility difference of two frequency multiplication frequencies is big In or equal to 20dBHL;If it is not, audiogram is generated according to the threshold of audibility of the user under the multiple frequency;If so, then The threshold of audibility for the half frequency multiplication frequency tested between described two frequency multiplication frequencies, and the threshold of audibility according to the half frequency multiplication frequency and the use Threshold of audibility generation audiogram of the family under the multiple frequency;If user is in first frequency and listening under last frequency Threshold difference is more than 5dBHL, then tests the threshold of audibility of the user under the multiple frequency successively again, up to first frequency and finally Untill threshold of audibility difference under one frequency is less than or equal to 5dBHL, and judge whether the threshold of audibility difference of two frequency multiplication frequencies is more than Or equal to 20dBHL, if it is not, generating audiogram according to the threshold of audibility of the user of last time test under the multiple frequency; If so, the threshold of audibility of half frequency multiplication frequency between then testing described two frequency multiplication frequencies, and according to the threshold of audibility of half frequency multiplication frequency and most Threshold of audibility generation audiogram of the user once tested afterwards under the multiple frequency.
- 16. the assisting hearing system based on mobile device as claimed in claim 15, it is characterised in that the output unit is defeated It is identical with last frequency to go out first frequency in multiple frequencies.
- 17. the assisting hearing system based on mobile device as claimed in claim 16, it is characterised in that the output unit is defeated Going out multiple frequencies includes:1000Hz、2000Hz、3000Hz、4000Hz、6000Hz、8000Hz、250Hz、500Hz、1000Hz.
- 18. the assisting hearing system based on mobile device as claimed in claim 15, it is characterised in that audiogram list Member, for obtaining hearing level initial value of the user under current frequency, and start to export test tone, the initial of the test tone listens Power level is that hearing level initial value of the user under current frequency subtracts 10dBHL, if user does not hear test tone, with mono- grade of 5dBHL Increase intensity, until user hears test tone;The above threshold of audibility three times is performed to test:After user hears test tone, with 10dBHL mono- Shelves reduce intensity, until user does not hear test tone, then with mono- grade of increase intensity of 5dBHL, until user hears test tone, then remember Record the current hearing level of the test tone;Whether the current hearing level for judging wherein to record three times is same hearing level, if it is not, continuing Perform the above threshold of audibility three times to test, untill the hearing level current three times recorded again is same hearing level, then described in record Same hearing level is the threshold of audibility under the current frequency.
- 19. the assisting hearing system based on mobile device as described in claim 14 to 18 any one, it is characterised in that institute State and test the hearing loss types judged with module and include conduction deafness, perceptive deafness and mixed deafness.
- 20. the assisting hearing system based on mobile device as claimed in claim 19, it is characterised in that when the hearing loss When type is perceptive deafness, described test selects to match prescriptive formula accordingly to be POGO or NAL-RP with module, when the hearing Type is lost when be conduction deafness or mixed deafness, it is described test with module selection match accordingly prescriptive formula for DSL [i/o] or IHAFF。
- 21. the assisting hearing system based on mobile device as claimed in claim 14, it is characterised in that the assisting hearing mould Block also includes speech enhancement unit, for making the processing of speech enhan-cement to the data signal.
- 22. the assisting hearing system based on mobile device as claimed in claim 21, it is characterised in that when mobile device is single During Mike, processing method that the speech enhancement unit uses for using the comb filter method of the quasi periodic denoising of voice, Any of Kalman filtering method based on model class, the spectrum-subtraction based on spectral amplitude estimation class or Wiener Filter Method.
- 23. the assisting hearing system based on mobile device as claimed in claim 21, it is characterised in that when mobile device is wheat During gram wind array, processing method that the speech enhancement unit uses is the minimum variance in Adaptive beamformer method without mistake Any of true response Beam-former, linear restriction minimum method Beam-former or generalized side lobe canceller.
- 24. the assisting hearing system based on mobile device as described in claim 14 or 21, it is characterised in that the frequency response is mended The processing method for the multichannel compensating for frequency response that unit uses is repaid to be following any:Using interpolation half-band filter, the equally distributed wave filter group of equiband is realized;OrCoordinate multiple harmonic oscillators to digital signal frequency split using comb filter, and by each railway digital signal weighting phase after frequency dividing Add output;OrIt is right according to frequency domain gain design time domain filtering using LOUDNESS formula and frequency domain sampling FIR filter design method The digital signal filter of input.
- 25. the assisting hearing system based on mobile device as claimed in claim 14, it is characterised in that the audiometry module is defeated Go out the test tone for the one or more in pure tone, twiter sound or pulse sound.
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