CN105167883B - Speech processing method and system for increasing Chinese tone recognition rate based on frequency shift processing - Google Patents
Speech processing method and system for increasing Chinese tone recognition rate based on frequency shift processing Download PDFInfo
- Publication number
- CN105167883B CN105167883B CN201510624049.9A CN201510624049A CN105167883B CN 105167883 B CN105167883 B CN 105167883B CN 201510624049 A CN201510624049 A CN 201510624049A CN 105167883 B CN105167883 B CN 105167883B
- Authority
- CN
- China
- Prior art keywords
- fundamental frequency
- electrode
- fixed electrode
- sequence
- snail
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The invention discloses a speech processing method and system for increasing the Chinese tone recognition rate based on frequency shift processing. The method comprises the following steps that M usable electrodes and H movable electrodes are determined, and therefore M-H electrodes exist in a fixed electrode sequence; changes of the fundamental frequency are detected according to the reference fundamental frequency and are expressed in percentage; when H is 2, the fixed electrode sequence is shifted if the change of the fundamental frequency exceeds 20% of the reference fundamental frequency; when H is 4, the fixed electrode sequence is shifted if the change of the fundamental frequency exceeds 15% of the reference fundamental frequency; when H is 6, the fixed electrode sequence is shifted if the change of the fundamental frequency exceeds 10% of the reference fundamental frequency; after the fixed electrode sequence is determined, N channels with the maximum energy are selected to be subjected to stimulation. According to the speech processing method and system for increasing the Chinese tone recognition rate based on frequency shift processing, the integral position of stimulating electrodes is changed according to the changes of the fundamental frequency of input sound signals so that the information of frequency changes in the sound signals can be transmitted, and finally the result of increasing the Chinese tone recognition rate is achieved.
Description
Technical field
The invention belongs to medical instruments field, more particularly to a kind of speech that Chinese tone recognition rate is improved based on shift frequency process
Language processing method and system.
Background technology
For English speech recognition, the fundamental frequency information of the sound wave in speech production and the contribution of periodical information
It is weaker, but for the Tone recognition of Chinese, fundamental frequency information and periodical information are even more important.
What the identification of Chinese language tone was mainly realized by perceiving the change of frequency domain fundamental frequency (F0).Some other acoustics is special
Property, would also vary under not same tone, identification of these acoustic featuress to tone is likely to helpful.For example, simple or compound vowel of a Chinese syllable
Length：In general, the simple or compound vowel of a Chinese syllable length of the 3rd sound is most long, and the falling tone is most short；Sound amplitude：The peak value of the 3rd sound
Amplitude is relatively low, and the peak amplitude of the falling tone is highest；Amplitude envelops and F0 profile dependencys：The amplitude of variation of many sound
Envelope has a certain degree of dependency with the change profile of fundamental frequency.In the presence of frequency domain fundamental frequency (F0), these acoustics are special
Property on Tone recognition affect very little.Therefore, pitch contour is the identity authentication of speaker, and rhythm identification and Tone recognition are provided
Important information.
In artificial cochlea system, substantial amounts of research has shown that, although there is larger individual variation, but the tone of implantation person
It is in arrange from low to high to snail bottom that (frequency) is perceived sharp from snail with implant electrode, the position perceived with normal hearing system medium pitch
Coding theory is consistent.When electricity irritation is carried out to cochlea, the range of choice of electrode is fixed to traditional code strategy, causes to be directed to
It is poor compared with property, the information of acoustical signal pitch variation can not be transmitted, power consumption is high.
The content of the invention
In view of this, it is an object of the invention to provide a kind of speech that Chinese tone recognition rate is improved based on shift frequency process
Processing method and system, according to the change of input acoustical signal frequency, the appropriate integral position for changing stimulating electrode, carry so as to reach
The effect of high Chinese tone recognition.Present invention is generally directed to artificial cochlea, therefore following content is all with the process of artificial cochlea's speech
Based on.
To reach above-mentioned purpose, the invention provides a kind of artificial ear that Chinese tone recognition rate is improved based on shift frequency process
Snail speech processing method, comprises the following steps：
Determine M avaivable electrode, H float electrode has M-H electrode in fixed electrode sequence；
Acoustical signal to being input into language processing device for artificial cochlea carries out fundamental frequency extraction, obtains stable reference fundamental frequency, gives tacit consent to
Fixed electrode sequence, to the centre position between cupula cochleae electrode, is herein the acquiescence position of fixed electrode sequence in snail hearth electrode
Put；
Detection pitch variation, is expressed as a percentage；
When H is 2, when pitch variation is higher than refer to fundamental frequency 20%, fixed electrode sequence is moved to snail hearth electrode direction
It is dynamic one；When pitch variation is less than refer to fundamental frequency 20%, fixed electrode sequence is moved into one to cupula cochleae electrode direction；
When H is 4, when pitch variation is higher than refer to fundamental frequency 15%, fixed electrode sequence is moved to snail hearth electrode direction
It is dynamic one；Higher than with reference to fundamental frequency 30% when, by fixed electrode sequence to snail hearth electrode direction move two；Pitch variation is less than
With reference to fundamental frequency 15% when, by fixed electrode sequence to cupula cochleae electrode direction move one；Less than with reference to fundamental frequency 30% when, will
Fixed electrode sequence to cupula cochleae electrode direction moves two；
When H is 6, when pitch variation is higher than refer to fundamental frequency 10%, fixed electrode sequence is moved to snail hearth electrode direction
It is dynamic one；Higher than with reference to fundamental frequency 20% when, by fixed electrode sequence to snail hearth electrode direction move two；Higher than referring to fundamental frequency
30% when, by fixed electrode sequence to snail hearth electrode direction move three；When pitch variation is less than refer to fundamental frequency 10%, will
Fixed electrode sequence to cupula cochleae electrode direction moves one；When pitch variation is less than refer to fundamental frequency 20%, by fixed electrode sequence
Arrange to cupula cochleae electrode direction and move two；When pitch variation is less than refer to fundamental frequency 30%, by fixed electrode sequence to cupula cochleae electricity
Extreme direction moves three；
After determining fixed electrode sequence, choosing the maximum N number of passage of energy is stimulated.
Preferably, it is described to carry out fundamental frequency extraction, stable reference fundamental frequency is obtained, it is the stable fundamental frequency of 3 frames of continuous extraction, really
It is set to and refers to fundamental frequency.
Preferably, after the detection pitch variation, corresponding movement is made immediately with fundamental frequency.
Preferably, when H is 2, after stimulation after 200ms, fixed electrode sequence is switched back into into default location.
Preferably, when H is 4, after stimulation after 200ms, fixed electrode sequence is made into corresponding movement immediately with fundamental frequency.
Preferably, when H is 6, after stimulation after 200ms, fixed electrode sequence is made into corresponding movement immediately with fundamental frequency.
Based on above-mentioned purpose, present invention also offers a kind of artificial ear that Chinese tone recognition rate is improved based on shift frequency process
Snail speech processing system, including：
Electrode chooses unit, for determining M avaivable electrode, H float electrode, have in fixed electrode sequence M-H it is electric
Pole；
Fundamental frequency extraction unit, chooses unit and is connected with the electrode, for the sound to being input into language processing device for artificial cochlea
Signal carries out fundamental frequency extraction, obtains stable reference fundamental frequency, acquiescence fixed electrode sequence in snail hearth electrode to cupula cochleae electrode it
Between centre position, be herein the default location of fixed electrode sequence；Then pitch variation is detected, is expressed as a percentage；
Shift frequency decision package, is connected with the fundamental frequency extraction unit, for different according to float electrode number H, is moved
Frequency is processed, when H is 2, when pitch variation is higher than refer to fundamental frequency 20%, by fixed electrode sequence to snail hearth electrode direction movement one
Position；When pitch variation is less than refer to fundamental frequency 20%, fixed electrode sequence is moved into one to cupula cochleae electrode direction；When H is 4,
When pitch variation is higher than refer to fundamental frequency 15%, fixed electrode sequence is moved into one to snail hearth electrode direction；Higher than referring to base
Frequency 30% when, by fixed electrode sequence to snail hearth electrode direction move two；When pitch variation is less than refer to fundamental frequency 15%,
Fixed electrode sequence is moved into one to cupula cochleae electrode direction；Less than with reference to fundamental frequency 30% when, by fixed electrode sequence to snail
Move two in top electrode direction；When H is 6, when pitch variation is higher than refer to fundamental frequency 10%, by fixed electrode sequence to snail bottom electricity
Extreme direction moves one；Higher than with reference to fundamental frequency 20% when, by fixed electrode sequence to snail hearth electrode direction move two；It is higher than
With reference to fundamental frequency 30% when, by fixed electrode sequence to snail hearth electrode direction move three；Pitch variation is less than with reference to fundamental frequency
When 10%, fixed electrode sequence is moved into one to cupula cochleae electrode direction；When pitch variation is less than refer to fundamental frequency 20%, will be solid
Fixed electrode sequence to cupula cochleae electrode direction moves two；When pitch variation is less than refer to fundamental frequency 30%, by fixed electrode sequence
Three are moved to cupula cochleae electrode direction；
Passage stimulating unit, is connected with the shift frequency decision package, for it is determined that after fixed electrode sequence, choosing energy
Maximum N number of passage is stimulated.
Preferably, the fundamental frequency extraction unit, is the stable fundamental frequency of 3 frames of continuous extraction, is defined as referring to fundamental frequency.
Preferably, the fundamental frequency extraction unit, after detection pitch variation, with fundamental frequency corresponding movement is made immediately.
Preferably, the shift frequency decision package, when H is 2, after stimulation after 200ms, fixed electrode sequence is switched back into silent
Recognize position；When H is 4, after stimulation after 200ms, fixed electrode sequence is made into corresponding movement immediately with fundamental frequency；When H is 6,
After stimulation after 200ms, fixed electrode sequence is made into corresponding movement immediately with fundamental frequency.
The beneficial effects of the present invention is：Generally, speech base frequency range is 100-350Hz, the base of the Chinese four tones of standard Chinese pronunciation
Frequency excursion has the change scope of nearly 10dB because of men and women's sound difference.Wherein, the four tones of standard Chinese pronunciation pitch variation scope of female voice is respectively：The
One sound 5.3%；The rising tone 40.0%；3rd sound 31.5%；The falling tone 56.6%；Male voice four tones of standard Chinese pronunciation pitch variation scope is respectively：
First sound 7%；The rising tone 39.4%；3rd sound 27.4%；The falling tone 55.5%, thus the pitch variation scope of the Chinese four tones of standard Chinese pronunciation compared with
Greatly, it is bad to the effect of Tone recognition without specific aim if all of electrode of unified use sends stimulation.Prior art
In to the optimization of electrode stimulating only by increase rate envelope and fundamental frequency dependency, and channel adaptive dynamic peak value thorn
Swash, the present invention uses fixed electrode sequence by introducing fixed electrode and float electrode, only, according to the change of acoustical signal frequency,
It is appropriate to change fixed electrode sequence location, stimulate different frequency perceived position, so as to improve language processing device for artificial cochlea
Chinese tone recognition rate；Simultaneously as only using fixed electrode, power consumption is effectively reduced；Can be with after shift frequency decision package
Continuous alternate samples or peak value choose or tunnel strategy is used in combination, with extensive adaptability and practicality.
Description of the drawings
In order that the purpose of the present invention, technical scheme and beneficial effect are clearer, the present invention provides drawings described below and carries out
Explanation：
Fig. 1 processes the artificial cochlea's speech process side for improving Chinese tone recognition rate for the embodiment of the present invention based on shift frequency
The step of method flow chart；
Fig. 2 processes the artificial cochlea's speech processing system for improving Chinese tone recognition rate for the embodiment of the present invention based on shift frequency
The structural representation of system；
Fig. 3 processes the artificial cochlea's speech processing system for improving Chinese tone recognition rate for the embodiment of the present invention based on shift frequency
The shift frequency of float electrode H=2 stimulates schematic diagram in system；
Fig. 4 processes the artificial cochlea's speech processing system for improving Chinese tone recognition rate for the embodiment of the present invention based on shift frequency
The shift frequency of float electrode H=4 stimulates schematic diagram in system；
Fig. 5 processes the artificial cochlea's speech processing system for improving Chinese tone recognition rate for the embodiment of the present invention based on shift frequency
The shift frequency of float electrode H=6 stimulates schematic diagram in system.
Specific embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.
Referring to Fig. 1, the artificial cochlea that Chinese tone recognition rate is improved based on shift frequency process of the embodiment of the present invention is shown
The step of speech processing method flow chart, comprise the following steps：
S101, determines M avaivable electrode, and H float electrode has M-H electrode in fixed electrode sequence；
S102, the acoustical signal to being input into language processing device for artificial cochlea carries out fundamental frequency extraction, obtains stable reference fundamental frequency,
Acquiescence fixed electrode sequence, to the centre position between cupula cochleae electrode, is herein the acquiescence of fixed electrode sequence in snail hearth electrode
Position；
S103, detects pitch variation, is expressed as a percentage；
S104, when H is 2, when pitch variation is higher than refer to fundamental frequency 20%, by fixed electrode sequence to snail hearth electrode side
To movement one；When pitch variation is less than refer to fundamental frequency 20%, fixed electrode sequence is moved into one to cupula cochleae electrode direction；
S105, when H is 4, when pitch variation is higher than refer to fundamental frequency 15%, by fixed electrode sequence to snail hearth electrode side
To movement one；Higher than with reference to fundamental frequency 30% when, by fixed electrode sequence to snail hearth electrode direction move two；Pitch variation
Less than with reference to fundamental frequency 15% when, by fixed electrode sequence to cupula cochleae electrode direction move one；Less than 30% with reference to fundamental frequency
When, fixed electrode sequence is moved into two to cupula cochleae electrode direction；
S106, when H is 6, when pitch variation is higher than refer to fundamental frequency 10%, by fixed electrode sequence to snail hearth electrode side
To movement one；Higher than with reference to fundamental frequency 20% when, by fixed electrode sequence to snail hearth electrode direction move two；Higher than reference
Fundamental frequency 30% when, by fixed electrode sequence to snail hearth electrode direction move three；Pitch variation is less than 10% with reference to fundamental frequency
When, fixed electrode sequence is moved into one to cupula cochleae electrode direction；When pitch variation is less than refer to fundamental frequency 20%, will fixed electricity
Pole sequence to cupula cochleae electrode direction moves two；When pitch variation is less than refer to fundamental frequency 30%, by fixed electrode sequence to snail
Move three in top electrode direction；
S107, after determining fixed electrode sequence, choosing the maximum N number of passage of energy is stimulated.
Further, fundamental frequency extraction is carried out described in S102, stable reference fundamental frequency is obtained, is that continuous 3 frames that extract are stablized
Fundamental frequency, be defined as referring to fundamental frequency.
Further, after the S103 steps, corresponding movement is made immediately with fundamental frequency.
Further, when H is 2, after stimulation after 200ms, fixed electrode sequence is switched back into into default location.
Further, when H is 4, after stimulation after 200ms, fixed electrode sequence is made into corresponding movement immediately with fundamental frequency.
Further, when H is 6, after stimulation after 200ms, fixed electrode sequence is made into corresponding movement immediately with fundamental frequency.
It is corresponding with above-mentioned artificial cochlea's speech processing method based on shift frequency process raising Chinese tone recognition rate to be, this
Invent another embodiment and provide the knot that the artificial cochlea's speech processing system for improving Chinese tone recognition rate is processed based on shift frequency
Structure schematic diagram, including：
Electrode chooses unit 101, and for determining M avaivable electrode, H float electrode has M-H in fixed electrode sequence
Electrode；
Fundamental frequency extraction unit 102, chooses unit 101 and is connected, for being input into language processing device for artificial cochlea with electrode
Acoustical signal carries out fundamental frequency extraction, obtains stable reference fundamental frequency, and acquiescence fixed electrode sequence is in snail hearth electrode to cupula cochleae electrode
Between centre position, be herein the default location of fixed electrode sequence；Then pitch variation is detected, is expressed as a percentage；
Shift frequency decision package 103, is connected with fundamental frequency extraction unit 102, for different according to float electrode number H, carries out
Shift frequency process, when H is 2, when pitch variation is higher than refer to fundamental frequency 20%, fixed electrode sequence is moved to snail hearth electrode direction
One；When pitch variation is less than refer to fundamental frequency 20%, fixed electrode sequence is moved into one to cupula cochleae electrode direction；When H is
4, when pitch variation is higher than refer to fundamental frequency 15%, fixed electrode sequence is moved into one to snail hearth electrode direction；Higher than reference
Fundamental frequency 30% when, by fixed electrode sequence to snail hearth electrode direction move two；Pitch variation is less than 15% with reference to fundamental frequency
When, fixed electrode sequence is moved into one to cupula cochleae electrode direction；Less than with reference to fundamental frequency 30% when, by fixed electrode sequence to
Cupula cochleae electrode direction moves two；When H is 6, when pitch variation is higher than refer to fundamental frequency 10%, by fixed electrode sequence to snail bottom
Electrode direction moves one；Higher than with reference to fundamental frequency 20% when, by fixed electrode sequence to snail hearth electrode direction move two；It is high
In with reference to fundamental frequency 30% when, by fixed electrode sequence to snail hearth electrode direction move three；Pitch variation is less than and refers to fundamental frequency
10% when, by fixed electrode sequence to cupula cochleae electrode direction move one；When pitch variation is less than refer to fundamental frequency 20%, will
Fixed electrode sequence to cupula cochleae electrode direction moves two；When pitch variation is less than refer to fundamental frequency 30%, by fixed electrode sequence
Arrange to cupula cochleae electrode direction and move three；
Passage stimulating unit 104, is connected with shift frequency decision package 103, for it is determined that after fixed electrode sequence, choosing energy
The maximum N number of passage of amount is stimulated.
Further, in concrete application example, fundamental frequency extraction unit 102 is the stable fundamental frequency of 3 frames of continuous extraction, really
It is set to and refers to fundamental frequency.
Further, in concrete application example, after the detection pitch variation of fundamental frequency extraction unit 102, do immediately with fundamental frequency
Go out corresponding movement.
Further, in concrete application example, shift frequency decision package 103, when H is 2, after stimulation after 200ms, will be solid
Fixed electrode sequence switches back into default location；When H is 4, after stimulation after 200ms, fixed electrode sequence is made immediately with fundamental frequency
It is corresponding mobile；When H is 6, after stimulation after 200ms, fixed electrode sequence is made into corresponding movement immediately with fundamental frequency.Switching back into
Default location and during making corresponding movement immediately with fundamental frequency, fundamental frequency extraction unit 102 no longer carries out fundamental frequency extraction.
Artificial cochlea of the present invention for physical electrode more than 20.24 avaivable electrodes in specific embodiment, electrode is compiled
Number No. 1-24, correspondence from cupula cochleae to snail bottom, i.e., from low to high, 6 float electrodes, then fixed electrode is 18, fixed
Electrode sequence is 4-21 electrodes.It is divided into 18 passages, with the first passage that No. 4 electrode represents lowest frequency；With No. 21
Electrode represents the 24th passage of most high frequency.Each frame only divides 18 passages, and electrode number is designated as E1-E18.Default mode
Under, 4-21 electrodes correspond to respectively E1-E18.
The selection of E1-E18 is continuous.
The selection of E1-E18 changes with the change of input acoustical signal fundamental frequency.The limit is：E1-E18 correspondences the 1st to the 18th
Electrode or E1-E18 correspondence 7-24 electrodes.
In general, the float electrode number of both sides cupula cochleae/snail bottom (low frequency/high frequency) wants equal symmetrical.Float electrode
Number is not less than 2, no more than 6.Fixed electrode number is not more than 22, not less than 18.
In specific embodiment, referring to Fig. 3-5, two oscillograms of top half are fundamental curve in figure, and curve 1 is fundamental frequency
Size；Two coordinate diagrams of the latter half represent fixed electrode sequence, and small circle 2 represents that the electrode is activated.
Referring to Fig. 3, if float electrode is 2, i.e., 1 pair, 1 grade is designated as；When fundamental frequency extraction unit 102 obtains stable reference
After fundamental frequency, what pitch variation exceeded 20% starts shift frequency, if higher than 20% with reference to fundamental frequency, by fixed electrode sequence to snail bottom
Move in direction.
Fixed electrode sequence default location is the 2nd to No. 23 electrode, and float electrode is the 1st and No. 24 electrode.Work as inspection
It is original 120% to survey pitch variation, i.e., when higher than with reference to fundamental frequency 20%, the displacement of small circle 2 is the 3rd to No. 24 electrode,；When
When detection pitch variation is original 80%, the displacement of small circle 2 is the 1st to No. 22 electrode.
Referring to Fig. 4, if 2 pairs, it is designated as 2 grades；After fundamental frequency extraction unit 102 obtains stable reference fundamental frequency, fundamental frequency becomes
Change starts shift frequency more than 15%, and shift frequency direction is consistent with the above, higher than the 15% fixed electrode sequence with reference to fundamental frequency to numbering
Big electrode moves one, and one is moved to little electrode is numbered less than the 15% fixed electrode sequence with reference to fundamental frequency；Higher than ginseng
Examine 30% fixed electrode sequence of fundamental frequency and move one to numbering big electrode again, move two compared with default location, it is low
One is moved to little electrode is numbered in the 30% fixed electrode sequence with reference to fundamental frequency, two are moved compared with default location.
It is corresponding with the position of small circle 2 by the size variation of curve in Fig. 41, it is seen that shift frequency effect is fine.
Referring to Fig. 5, if 3 pairs, it is designated as 3 grades；After fundamental frequency extraction unit 102 obtains stable reference fundamental frequency, fundamental frequency becomes
Change 10% for exceeding and start shift frequency, shift frequency direction is consistent with the above, higher than the 10% fixed electrode sequence with reference to fundamental frequency to volume
Number big electrode moves one, and one is moved to little electrode is numbered less than the 10% fixed electrode sequence with reference to fundamental frequency；It is higher than
Again one is moved to the big electrode of numbering with reference to 20% fixed electrode sequence of fundamental frequency, two is moved compared with default location,
One is moved to little electrode is numbered less than the 20% fixed electrode sequence with reference to fundamental frequency, two are moved compared with default location
Position；Again one is moved to the big electrode of numbering higher than the 30% fixed electrode sequence with reference to fundamental frequency, the movement compared with default location
Three, one is moved to little electrode is numbered less than 30% fixed electrode sequence with reference to fundamental frequency, moved compared with default location
Three are moved.It is corresponding with the position of small circle 2 by the size variation of curve in Fig. 51, it is seen that shift frequency effect is fine.
Finally illustrate, preferred embodiment above is only unrestricted to illustrate technical scheme, although logical
Cross above preferred embodiment to be described in detail the present invention, it is to be understood by those skilled in the art that can be
In form and in details various changes are made to it, without departing from claims of the present invention limited range.
Claims (10)
1. it is a kind of that the speech processing method for improving Chinese tone recognition rate is processed based on shift frequency, it is characterised in that including following step
Suddenly：
Determine M avaivable electrode, there is M-H electrode in H float electrode, therefore fixed electrode sequence；
Acoustical signal to being input into language processing device for artificial cochlea carries out fundamental frequency extraction, obtains stable reference fundamental frequency, and acquiescence is fixed
, in snail hearth electrode to the centre position between cupula cochleae electrode, snail hearth electrode is to the centre position between cupula cochleae electrode for electrode sequence
For the default location of fixed electrode sequence；
Detection pitch variation, is expressed as a percentage；
When H is 2, when pitch variation is higher than refer to fundamental frequency 20%, by fixed electrode sequence to snail hearth electrode direction movement one
Position；When pitch variation is less than refer to fundamental frequency 20%, fixed electrode sequence is moved into one to cupula cochleae electrode direction；
When H is 4, when pitch variation is higher than refer to fundamental frequency 15%, by fixed electrode sequence to snail hearth electrode direction movement one
Position；Higher than with reference to fundamental frequency 30% when, by fixed electrode sequence to snail hearth electrode direction move two；Pitch variation is less than reference
Fundamental frequency 15% when, by fixed electrode sequence to cupula cochleae electrode direction move one；Less than with reference to fundamental frequency 30% when, by fixation
Electrode sequence to cupula cochleae electrode direction moves two；
When H is 6, when pitch variation is higher than refer to fundamental frequency 10%, by fixed electrode sequence to snail hearth electrode direction movement one
Position；Higher than with reference to fundamental frequency 20% when, by fixed electrode sequence to snail hearth electrode direction move two；Higher than with reference to fundamental frequency
When 30%, fixed electrode sequence is moved into three to snail hearth electrode direction；When pitch variation is less than refer to fundamental frequency 10%, will be solid
Fixed electrode sequence to cupula cochleae electrode direction moves one；When pitch variation is less than refer to fundamental frequency 20%, by fixed electrode sequence
Two are moved to cupula cochleae electrode direction；When pitch variation is less than refer to fundamental frequency 30%, by fixed electrode sequence to cupula cochleae electrode
Move three in direction；
After determining fixed electrode sequence, choosing the maximum N number of passage of energy is stimulated.
2. method according to claim 1, it is characterised in that described to carry out fundamental frequency extraction, obtains stable reference fundamental frequency,
The stable fundamental frequency of 3 frames is extracted for continuous, is defined as referring to fundamental frequency.
3. method according to claim 2, it is characterised in that after the detection pitch variation, electrode does immediately with fundamental frequency
Go out corresponding movement.
4. method according to claim 1, it is characterised in that when H is 2, after stimulation after 200ms, by fixed electrode sequence
Row switch back into default location.
5. method according to claim 1, it is characterised in that when H is 4, after stimulation after 200ms, by fixed electrode sequence
Row make corresponding movement immediately with fundamental frequency.
6. method according to claim 5, it is characterised in that identical with during H=4 when H is 6, after stimulation 200ms
Afterwards, fixed electrode sequence is made into corresponding movement immediately with fundamental frequency.
7. it is a kind of that the speech processing system for improving Chinese tone recognition rate is processed based on shift frequency, it is characterised in that to include：
Electrode chooses unit, and for determining M avaivable electrode, H float electrode has M-H electrode in fixed electrode sequence；
Fundamental frequency extraction unit, chooses unit and is connected with the electrode, for the acoustical signal to being input into language processing device for artificial cochlea
Fundamental frequency extraction is carried out, stable reference fundamental frequency is obtained, acquiescence fixed electrode sequence is in snail hearth electrode between cupula cochleae electrode
Centre position, snail hearth electrode to the centre position between cupula cochleae electrode is the default location of fixed electrode sequence；Then base is detected
Frequency changes, and is expressed as a percentage；
Shift frequency decision package, is connected with the fundamental frequency extraction unit, for different according to float electrode number H, carries out at shift frequency
Reason, when H is 2, when pitch variation is higher than refer to fundamental frequency 20%, one is moved by fixed electrode sequence to snail hearth electrode direction；
When pitch variation is less than refer to fundamental frequency 20%, fixed electrode sequence is moved into one to cupula cochleae electrode direction；When H is 4, fundamental frequency
When change is higher than refer to fundamental frequency 15%, fixed electrode sequence is moved into one to snail hearth electrode direction；Higher than with reference to fundamental frequency
When 30%, fixed electrode sequence is moved into two to snail hearth electrode direction；When pitch variation is less than refer to fundamental frequency 15%, will be solid
Fixed electrode sequence to cupula cochleae electrode direction moves one；Less than with reference to fundamental frequency 30% when, by fixed electrode sequence to cupula cochleae electricity
Extreme direction moves two；When H is 6, when pitch variation is higher than refer to fundamental frequency 10%, by fixed electrode sequence to snail hearth electrode side
To movement one；Higher than with reference to fundamental frequency 20% when, by fixed electrode sequence to snail hearth electrode direction move two；Higher than reference
Fundamental frequency 30% when, by fixed electrode sequence to snail hearth electrode direction move three；Pitch variation is less than 10% with reference to fundamental frequency
When, fixed electrode sequence is moved into one to cupula cochleae electrode direction；When pitch variation is less than refer to fundamental frequency 20%, will fixed electricity
Pole sequence to cupula cochleae electrode direction moves two；When pitch variation is less than refer to fundamental frequency 30%, by fixed electrode sequence to snail
Move three in top electrode direction；
Passage stimulating unit, is connected with the shift frequency decision package, for it is determined that after fixed electrode sequence, choosing energy maximum
N number of passage stimulated.
8. system according to claim 7, it is characterised in that the fundamental frequency extraction unit, to extract 3 frames stable continuous
After fundamental frequency, the fundamental frequency extracted in the 3rd frame is defined as referring to fundamental frequency.
9. system according to claim 7, it is characterised in that the fundamental frequency extraction unit, after pitch variation is detected,
Corresponding movement is made immediately with fundamental frequency.
10. system according to claim 9, it is characterised in that the shift frequency decision package, when H is 2, is stimulating
After 200ms, fixed electrode sequence is switched back into into default location；When H be 4 when, stimulate 200ms after, by fixed electrode sequence with
Fundamental frequency makes corresponding movement immediately；When H is 6, after 200ms is stimulated, fixed electrode sequence is made accordingly immediately with fundamental frequency
It is mobile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510624049.9A CN105167883B (en) | 2015-09-25 | 2015-09-25 | Speech processing method and system for increasing Chinese tone recognition rate based on frequency shift processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510624049.9A CN105167883B (en) | 2015-09-25 | 2015-09-25 | Speech processing method and system for increasing Chinese tone recognition rate based on frequency shift processing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105167883A CN105167883A (en) | 2015-12-23 |
| CN105167883B true CN105167883B (en) | 2017-04-19 |
Family
ID=54890680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510624049.9A Active CN105167883B (en) | 2015-09-25 | 2015-09-25 | Speech processing method and system for increasing Chinese tone recognition rate based on frequency shift processing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105167883B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107507610B (en) * | 2017-09-28 | 2020-08-07 | 河南理工大学 | Chinese tone recognition method based on vowel fundamental frequency information |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101803972A (en) * | 2010-01-11 | 2010-08-18 | 杭州诺尔康神经电子科技有限公司 | Cochlear implant system and automatic physical electrode selection method |
| US8019431B2 (en) * | 2008-06-02 | 2011-09-13 | University Of Washington | Enhanced signal processing for cochlear implants |
| CN104013492A (en) * | 2014-05-23 | 2014-09-03 | 浙江诺尔康神经电子科技股份有限公司 | Cochlear implant signal processing unit and method based on auditory perception prompts |
| CN104287872A (en) * | 2013-07-15 | 2015-01-21 | 奥迪康医疗有限公司 | A hearing assistance device comprising an implanted part for measuring and processing electrically evoked nerve responses |
| CN104616659A (en) * | 2015-02-09 | 2015-05-13 | 山东大学 | Method for influencing tone perception of reconstructed speech by phase and application in artificial cochlea |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004053742A (en) * | 2002-07-17 | 2004-02-19 | Matsushita Electric Ind Co Ltd | Speech recognition device |
| KR100941773B1 (en) * | 2007-10-25 | 2010-02-11 | 한국기계연구원 | Frequency analyzer of cochlear implant with self power supply |
| AU2012218042B2 (en) * | 2011-02-14 | 2015-05-07 | Med-El Elektromedizinische Geraete Gmbh | Enhancing fine time structure transmission for hearing implant system |
-
2015
- 2015-09-25 CN CN201510624049.9A patent/CN105167883B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8019431B2 (en) * | 2008-06-02 | 2011-09-13 | University Of Washington | Enhanced signal processing for cochlear implants |
| CN101803972A (en) * | 2010-01-11 | 2010-08-18 | 杭州诺尔康神经电子科技有限公司 | Cochlear implant system and automatic physical electrode selection method |
| CN104287872A (en) * | 2013-07-15 | 2015-01-21 | 奥迪康医疗有限公司 | A hearing assistance device comprising an implanted part for measuring and processing electrically evoked nerve responses |
| CN104013492A (en) * | 2014-05-23 | 2014-09-03 | 浙江诺尔康神经电子科技股份有限公司 | Cochlear implant signal processing unit and method based on auditory perception prompts |
| CN104616659A (en) * | 2015-02-09 | 2015-05-13 | 山东大学 | Method for influencing tone perception of reconstructed speech by phase and application in artificial cochlea |
Non-Patent Citations (1)
| Title |
|---|
| "数字助听器中多通道响度补偿方法的研究";张宝琳 等;《信号处理》;20130531;第29卷(第5期);第656－第661页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105167883A (en) | 2015-12-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103140260B (en) | Cochlear implant stimulation with low frequency channel privilege | |
| Luo et al. | Enhancing Chinese tone recognition by manipulating amplitude envelope: Implications for cochlear implants | |
| CN100502819C (en) | Artificial cochlea manufacture method suitable for Chinese voice coding strategy | |
| US8185383B2 (en) | Methods and apparatus for adapting speech coders to improve cochlear implant performance | |
| CN102958561B (en) | The timing of envelope particular stimulation | |
| CN1531371A (en) | Audio processing method and system implantted cochlea | |
| CN102579159B (en) | Electrical cochlea speech processor and processing method with signal compression in wide dynamic range | |
| CN104661700A (en) | Reduction of transient sounds in hearing implants | |
| RU2010105130A (en) | METHOD FOR STIMULATION SIGNALS GENERATION FOR AN IMPLANTABLE COCHLEAR IMPLANT ELECTRODE MATRIX (OPTIONS) AND COCHLEAR IMPLANT SYSTEM | |
| CN101055717B (en) | Artificial cochlea implementation method using the ATF coding technology and ATF artificial cochlea | |
| CN105814911B (en) | The feedback of energy signal for nerve stimulation gates | |
| CN105813688A (en) | Automatic selection of reduction or enhancement of transient sounds | |
| CN104307100B (en) | A kind of method and system improving artificial cochlea's pitch perception | |
| Choi et al. | A review of stimulating strategies for cochlear implants | |
| CN103892939A (en) | Artificial cochlea speech processor and method for improving Chinese tone recognition rate | |
| CN105769385A (en) | A cochlear implant and an operating method thereof | |
| CN105167883B (en) | Speech processing method and system for increasing Chinese tone recognition rate based on frequency shift processing | |
| CN108053829B (en) | Electronic cochlea coding method based on cochlear auditory nonlinear dynamics mechanism | |
| US8036753B2 (en) | Stimulation mode for cochlear implant speech coding | |
| CN107708797A (en) | Switch hearing implant coding strategy | |
| CN102525734A (en) | Electronic cochlea virtual channel signal processing system based on peak value selection and method | |
| CN107708794A (en) | Selective stimulating with cochlear implant | |
| Bolner et al. | Precompensating for spread of excitation in a cochlear implant coding strategy | |
| CN101408615A (en) | Method and device for measuring binaural sound time difference ILD critical apperceive characteristic | |
| AU2016341213B2 (en) | Robust instantaneous frequency estimation for hearing prosthesis sound coding |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |