CN113286242A - Device for decomposing speech signal to modify syllable and improving definition of speech signal - Google Patents
Device for decomposing speech signal to modify syllable and improving definition of speech signal Download PDFInfo
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- CN113286242A CN113286242A CN202110477754.6A CN202110477754A CN113286242A CN 113286242 A CN113286242 A CN 113286242A CN 202110477754 A CN202110477754 A CN 202110477754A CN 113286242 A CN113286242 A CN 113286242A
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- 238000001228 spectrum Methods 0.000 claims abstract description 20
- 230000004044 response Effects 0.000 claims abstract description 14
- 230000004048 modification Effects 0.000 claims abstract description 13
- 238000012986 modification Methods 0.000 claims abstract description 13
- 238000010183 spectrum analysis Methods 0.000 claims description 18
- 230000008859 change Effects 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 abstract description 9
- 238000012076 audiometry Methods 0.000 description 9
- 238000000354 decomposition reaction Methods 0.000 description 7
- 238000004891 communication Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 206010011878 Deafness Diseases 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- 208000016354 hearing loss disease Diseases 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 231100000888 hearing loss Toxicity 0.000 description 2
- 230000010370 hearing loss Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004931 aggregating effect Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 231100000895 deafness Toxicity 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 230000035790 physiological processes and functions Effects 0.000 description 1
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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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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
- G10L19/008—Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
- G10L19/02—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders
- G10L19/0204—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders using subband decomposition
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
- G10L19/02—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders
- G10L19/0204—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders using subband decomposition
- G10L19/0208—Subband vocoders
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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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Abstract
The invention discloses a device for decomposing speech signals to modify syllables and improving the definition of speech signals, which comprises a speech signal frequency divider and an encoder, wherein the speech signal frequency divider can decompose speech signals into fundamental frequency and harmonic components of syllables, a syllable frequency band spectrum library is established, the encoder can perform balanced modification regulation and control on syllable frequency bands, the output frequency response curve of the syllables is changed, the parameters of a hearing aid are regulated in a more detailed manner, and the speech recognition degree and the speech definition are improved.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to a device for decomposing speech signals to modify syllables and improving the definition of voice signals.
Background
After hearing loss occurs, the physiological function is weakened, the actual listening and recognition are deteriorated, and how is the speech recognition rate improved?
The hearing aid is used for amplifying external sound, helping deaf people listen to voice, improving communication and reducing hearing impairment and communication impairment. At present, the hearing aid is configured by using the pure tone audiometry result to set the hearing aid parameters, for example, if elderly deafness is often decreased due to the pure tone audiometry, i.e., more high-frequency sounds are needed to be heard, then the high-frequency gain of the hearing aid is increased (tuned up), and the high-frequency part of the external sound is amplified more. However, the voice is amplified, the speech intelligibility is not improved, and the method is called by experts: hearing aids have a fitting satisfaction of less than 30% for a number of reasons, the main factor being fitting errors or poor setting of hearing aid parameters, resulting in poor hearing aid performance, low satisfaction, i.e. often audible but not audible. One important factor in this situation is that data on which the hearing aid is fitted is a pure tone audiometric threshold, i.e., a hearing threshold, and the hearing threshold is introduced during the fitting of the hearing aid, and the hearing aid automatically calculates an amplification amount, i.e., a gain, corresponding to the hearing threshold.
Disclosure of Invention
The invention aims to provide a device for decomposing speech signals to modify syllables and improving the definition of speech signals, which can decompose the speech signals into fundamental frequency and harmonic components of the syllables, perform coding regulation and control, regulate parameters of a hearing aid in a more detailed manner and improve speech recognition and speech definition.
In order to achieve the purpose, the invention adopts the following technical scheme:
the device for improving the definition of the voice signal by decomposing the speech signal to modify the syllables comprises a speech signal frequency divider and an encoder;
the speech signal frequency divider can divide the frequency of syllables in a speech signal, measure the frequency bandwidth of the syllables, divide the syllables into a plurality of frequency bands, and meanwhile, establish a frequency spectrum library of male voices and female voices of the syllables;
the encoder can carry out balanced modification regulation and control on the frequency band corresponding to the syllable.
Therefore, the speech signal frequency divider can divide speech signals which cannot be identified or cannot be heard into syllables, carries out frequency spectrum analysis on the syllables, analyzes the frequency bands and the frequency of the syllables, divides the syllables into a plurality of frequency bands, then establishes a syllable frequency band spectrum library, and the encoder can carry out balanced regulation and control on finer frequency bands on the frequency bands of the syllables according to frequency spectrum analysis data, so that the identification degree and the definition of the speech signals are improved.
In some embodiments, the syllable is a composite audio response comprising fundamental and harmonic components.
Therefore, different frequency components contribute to speech recognition, the composite tone is more complex than pure tone, the syllable data are reflected more in detail, and the encoder is favorable for more accurately regulating and controlling the audio frequency response curve of the syllable, so that the speech recognition degree and the speech definition are improved.
In some embodiments, the encoder is capable of performing multichannel multi-channel equalization modification modulation on syllable frequency bands to change output frequency response curves of the syllables.
Therefore, the output frequency response curve of the syllables of the compound sound is regulated and controlled in detail in a multi-channel and multi-channel mode.
In some embodiments, the speech signal divider includes a speech signal decomposition unit capable of band-splitting syllables in the speech signal.
Thus, the speech signal decomposition unit decomposes the speech signal into minimum syllables, for example, syllables such as vowels, consonants, initials, and finals, and band-divides the syllables.
In some embodiments, the speech signal divider further comprises a spectral analysis unit capable of performing spectral analysis on the syllables.
Thus, the spectrum analysis unit performs band and frequency component analysis on the decomposed syllables.
In some embodiments, the speech signal divider further comprises a syllable band spectrum library creation unit capable of aggregating the spectrally analyzed syllable data into a database.
Thus, the creation of the syllable band spectrum library facilitates the invocation of the encoder.
In some embodiments, the apparatus further comprises a memory capable of storing a library of syllable band spectra.
Therefore, the memory can store data of the syllable band spectrum library and also can store syllable data regulated and controlled by the encoder.
In some embodiments, the device further comprises a data interface, the data interface being capable of data connection with the hearing aid.
Therefore, the data interface can transmit the coded data to the hearing aid, so that the effect of the hearing aid is improved, and the speech definition is improved.
In some embodiments, the apparatus may be in data communication with a speech audiometric device.
Therefore, the device can be connected with the existing speech audiometric equipment, so that the voice test signals of the speech audiometric equipment can be read, the voice signals are decomposed and subjected to spectrum analysis, the voice signals correspond to the syllable frequency band spectrum library in the memory of the device, then the voice signals are called, syllable modification equalization is carried out through the encoder, the encoded syllables are formed, and the syllables are output to the earphone or the hearing aid through the data interface.
The invention has the beneficial effects that: the device can decompose the speech signal into fundamental frequency and harmonic component of syllable to encode and regulate, and the parameter to the audiphone that becomes more detailed is adjusted, improves speech recognition degree and speech definition.
Drawings
FIG. 1 is a schematic diagram of the apparatus for decomposing speech signal to modify syllable and improving the intelligibility of speech signal according to the present invention;
FIG. 2 is a block diagram of a speech signal divider of the apparatus for decomposing speech signals to modify syllables and improving speech signal intelligibility of the present invention;
FIG. 3 is a schematic diagram of the apparatus for decomposing speech signal to modify syllable and improving the intelligibility of speech signal according to the present invention;
wherein: 1-speech signal frequency divider; 11-speech signal decomposition unit; 12-a spectral analysis unit; 13-syllable frequency band spectrum library creating unit; 2-a memory; 3-an encoder; 4-data interface.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1 to 3, the apparatus for decomposing speech signal to modify syllable and improve the definition of speech signal includes a speech signal frequency divider 1 and an encoder 3;
the speech signal frequency divider 1 can divide the frequency of syllables in speech signals, measure the frequency bandwidth of the syllables, divide the syllables into a plurality of frequency bands, and meanwhile, establish a frequency spectrum library of male voices and female voices of the syllables;
the encoder 3 can perform balanced modification regulation on the frequency band corresponding to the syllable.
Further, syllables are complex audio response curves consisting of fundamental and harmonic frequencies.
The different frequency components contribute to speech recognition differently, the complex tone is more complex than the pure tone, and the syllable data is reflected more in detail, so that the encoder 3 can regulate and control the frequency response curve of the syllable more accurately, and the speech recognition degree and the speech definition are improved.
Further, the encoder 3 can perform multichannel multi-channel equalization modification and control on the syllable frequency band. The syllable frequency band of the compound sound is regulated and controlled in detail through a multi-channel and multi-channel mode, so that the output frequency response curve of the syllable is changed or regulated.
Further explaining, the speech signal frequency divider 1 includes a speech signal decomposition unit 11, and the speech signal decomposition unit 11 can band-divide syllables in the speech signal.
The speech signal decomposition unit 11 decomposes the speech signal into minimum syllables, such as vowels, consonants, initials, finals, and the like, and band-divides the syllables for finer adjustment.
To explain further, the speech signal divider 1 further comprises a spectrum analysis unit 12, and the spectrum analysis unit 12 is capable of performing spectrum analysis on the syllables.
Further, the speech signal divider 1 further includes a syllable band spectrum library creating unit 13, and the syllable band spectrum library creating unit 13 can assemble the syllable data after the spectrum analysis into a database.
Further illustratively, the apparatus further comprises a memory 2, the memory 2 being capable of storing a library of syllable band spectra. The memory 2 can store data of a syllable frequency band spectrum library and also can store syllable encoding data regulated and controlled by the encoder 3.
Further, the device comprises a data interface 4, the data interface 4 being capable of data connection to the hearing aid.
Further, the device may be in data communication with speech audiometric equipment. The device can also communicate with the existing speech audiometric equipment, so that the voice test signals of the speech audiometric equipment can be read, the voice signals are decomposed and subjected to spectrum analysis, the voice signals correspond to a syllable frequency band spectrum library in a memory 2 of the device, then the voice signals are called, syllable modification equalization is carried out through an encoder 3 to form encoded syllables, and the encoded syllables are output to an earphone or a hearing aid through a data interface 4.
The working principle is as follows:
the device can regulate and control the voice signals in more detail, so that the speech recognition degree and the speech definition are improved.
The speech signal decomposing unit 11 of the speech signal frequency divider 1 firstly decomposes speech signals which cannot be identified or cannot be heard clearly into syllables, namely syllables such as vowels, consonants, initials and finals, then the frequency spectrum analyzing unit 12 carries out frequency spectrum analysis on the syllables, frequency bands and frequency components of the syllables are analyzed, the frequency bands are divided into frequency bands, the syllable frequency bands are composite audio response curves comprising fundamental frequencies and harmonic waves, during the frequency spectrum analysis, the frequency response curves formed by the fundamental frequencies and the harmonic waves are analyzed, then the analysis data are integrated to form a syllable frequency band spectrum library and are stored in the memory 2, the encoder 3 can call data of the database to carry out multichannel balanced modification and control on the corresponding syllables, so that the output frequency response curves of the syllables are changed or adjusted, the syllables are more detailed to be adjusted and controlled, the codes are transmitted to a hearing aid or an earphone after being adjusted, and a subject can independently adjust and control and confirm the output effect of the encoder 3, after the syllable recognition rate after the coding is improved, the coding data formed by the coder 3 can be led into the hearing aid, thereby improving the effect of the hearing aid and improving the speech recognition degree and the speech definition.
For example, if the word pronunciation of the 'face' cannot be recognized or cannot be heard, the speech signal decomposition unit 11 decomposes the 'face' into syllables'm-i-an', then plays syllables'm', 'i', 'an', and the like, if the'm' syllables cannot be recognized or cannot be heard clearly, a subject or an operator can introduce the'm' syllable data into the encoder 3 for modification and equalization, regulate and control the Baulo waveform of the frequency band formed by the'm' syllables, change the output frequency response curve of the syllables, listen through an earphone until the syllable definition is improved, and finally store the encoded data and write the encoded data into a hearing aid chip.
The speech audiometry is an audiometry method using speech as a test signal, and comprises three audiometry items including a speech perception threshold, a speech recognition rate and the like. Compared with pure-tone audiometry, the speech signal used by the speech audiometry is a compound sound, and is complex, in the test and matching of modern hearing aids, the speech audiometry is used for evaluating the influence degree of hearing loss on speech communication and the improvement degree of hearing speech listened by the hearing aids after the test and matching, and the data of the speech audiometry cannot be led into the hearing aids to be used as a direct basis for setting and regulating parameters of the hearing aids.
The device disclosed by the invention can be used for coding the compound sound, and the coded data can be led into the hearing aid and can be used for regulating and controlling the parameters of the hearing aid, so that the speech recognition degree and the speech definition are improved.
The foregoing disclosure discloses only some embodiments of the invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept herein, and it is intended to cover all such modifications and variations as fall within the scope of the invention.
Claims (8)
1. The device for improving the definition of the voice signal by decomposing the speech signal to modify the syllables is characterized by comprising a speech signal frequency divider (1) and an encoder (3);
the speech signal frequency divider (1) can divide the frequency of syllables in a speech signal, measure the frequency bandwidth of the syllables and divide the syllables into a plurality of frequency bands, and meanwhile, a frequency spectrum library of male voice and female voice of the syllables is established;
the encoder (3) can perform balanced modification regulation and control on the frequency bands corresponding to the syllables.
2. The apparatus as claimed in claim 1, wherein the syllable is a complex audio response curve composed of fundamental frequency and harmonic.
3. The apparatus for improving speech intelligibility of a speech signal according to claim 2 wherein the encoder (3) is capable of performing a multichannel equalization modification of the syllable bands to change the output frequency response of the syllables.
4. The apparatus for improving the intelligibility of a speech signal by decomposing speech signals to modify syllables according to claim 1 wherein the speech signal divider (1) comprises a speech signal decomposing unit (11), the speech signal decomposing unit (11) being capable of frequency-band dividing the syllables in the speech signal.
5. The apparatus for decomposing a speech signal to modify syllables to improve intelligibility of a speech signal according to claim 4, wherein said speech signal divider (1) further comprises a spectrum analysis unit (12), said spectrum analysis unit (12) being capable of performing a spectrum analysis on said syllables.
6. The apparatus for improving intelligibility of a speech signal by modifying syllables according to claim 5 wherein the speech signal divider (1) further comprises a syllable band spectrum library creating unit (13), the syllable band spectrum library creating unit (13) being capable of assembling the syllable data after the spectrum analysis into a database.
7. The apparatus for decomposing a speech signal to modify syllables to improve intelligibility of a speech signal according to claim 1, further comprising a memory (2), wherein said memory (2) is capable of storing a library of frequency bands of syllables.
8. The apparatus for decomposing a speech signal to modify syllables to improve intelligibility of a speech signal according to claim 1, further comprising a data interface (4), wherein said data interface (4) is capable of data connection with a hearing aid.
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|---|---|---|---|---|
| JP2003216172A (en) * | 2002-01-21 | 2003-07-30 | Kenwood Corp | Voice signal processor, voice signal processing method and program |
| CN102265335A (en) * | 2009-07-03 | 2011-11-30 | 松下电器产业株式会社 | Hearing aid adjustment device, method and program |
| CN102456348A (en) * | 2010-10-25 | 2012-05-16 | 松下电器产业株式会社 | Method and device for calculating sound compensation parameters as well as sound compensation system |
| CN109660928A (en) * | 2017-10-10 | 2019-04-19 | 奥迪康有限公司 | Hearing devices including the intelligibility of speech estimator for influencing Processing Algorithm |
| CN112205981A (en) * | 2020-10-10 | 2021-01-12 | 北京大学 | A hearing assessment method and device based on speech intelligibility index |
| CN112426150A (en) * | 2020-12-04 | 2021-03-02 | 湖南省医疗器械检验检测所 | Multifunctional audiometer and corresponding method for fitting hearing aid |
-
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- 2021-04-29 CN CN202110477754.6A patent/CN113286242A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003216172A (en) * | 2002-01-21 | 2003-07-30 | Kenwood Corp | Voice signal processor, voice signal processing method and program |
| CN102265335A (en) * | 2009-07-03 | 2011-11-30 | 松下电器产业株式会社 | Hearing aid adjustment device, method and program |
| CN102456348A (en) * | 2010-10-25 | 2012-05-16 | 松下电器产业株式会社 | Method and device for calculating sound compensation parameters as well as sound compensation system |
| CN109660928A (en) * | 2017-10-10 | 2019-04-19 | 奥迪康有限公司 | Hearing devices including the intelligibility of speech estimator for influencing Processing Algorithm |
| CN112205981A (en) * | 2020-10-10 | 2021-01-12 | 北京大学 | A hearing assessment method and device based on speech intelligibility index |
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