CN106849976A - Echo cancel method and communication terminal during a kind of hand-free call - Google Patents
Echo cancel method and communication terminal during a kind of hand-free call Download PDFInfo
- Publication number
- CN106849976A CN106849976A CN201611232980.3A CN201611232980A CN106849976A CN 106849976 A CN106849976 A CN 106849976A CN 201611232980 A CN201611232980 A CN 201611232980A CN 106849976 A CN106849976 A CN 106849976A
- Authority
- CN
- China
- Prior art keywords
- channel
- echo
- grade
- sound signal
- signal intensity
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
- H04M1/6033—Substation equipment, e.g. for use by subscribers including speech amplifiers for providing handsfree use or a loudspeaker mode in telephone sets
- H04M1/6041—Portable telephones adapted for handsfree use
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0208—Noise filtering
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/3827—Portable transceivers
- H04B1/3833—Hand-held transceivers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/318—Received signal strength
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72448—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0208—Noise filtering
- G10L2021/02082—Noise filtering the noise being echo, reverberation of the speech
Abstract
The invention discloses echo cancel method during a kind of hand-free call and communication terminal, it is related to field of communication terminals.The method includes：Detection sends channel and receives the sound signal intensity on channel, and grade is suppressed according to the echo that testing result setting sends channel.Through the above way, the echo intensity that the present invention can be according to produced by the sound signal intensity for sending channel and receive on channel judges, and then graduate suppression echo, improve speech quality during hand-free call.By the above method, user different environment using it is different speak tone when can understand and smoothly carry out hand-free call.
Description
Technical field
The present invention relates to echo cancel method during a kind of field of communication terminals, more particularly to hand-free call and communication eventually
End.
Background technology
Compared to hand-held, earphone and bluetooth conversation pattern, under the scene of hand-free call, the sound of hands-free reception than larger,
The acoustic energy for being transferred to microphone by air or structure sound chamber also compares many, and the opposing party for wanting call can't hear echo, need
Echo signal is suppressed.
Existing echo cancellation algorithm is constant to the inhibition level of echo, but different user is used in different environments
The echo intensity produced during communication terminal is different, and call can be influenceed to imitate when being suppressed on echo with identical inhibition level
Really, normal talking content is easily worked as echo together by particularly user when quiet environment is conversed with less volume
Eliminate, the sound for hearing other side is interrupted, influences communication effect.
The content of the invention
The present invention solves the technical problem of echo cancel method and communication terminal, energy when providing a kind of hand-free call
Enough graduate suppression echoes, improve speech quality during hand-free call.
In order to solve the above technical problems, one aspect of the present invention is：Echo when a kind of hand-free call is provided
Removing method, the method includes：Detection sends channel and receives the sound signal intensity on channel, is set according to testing result and sent out
The echo of channels suppresses grade.
Wherein, the sound signal intensity step that detection is sent on channel and reception channel includes：Detection sends channel and connects
Pulse code value on collection of letters road, and using pulse code value as sound signal intensity.
Wherein, the echo for setting transmission channel according to testing result suppresses magnitude step to be included：Judge to send channel and connect
Whether the sound signal intensity on collection of letters road is more than predetermined threshold value.
Wherein, if the sound signal intensity sent on channel is more than predetermined threshold value, and the voice signal received on channel is strong
Degree is less than predetermined threshold value, then the echo suppression grade that will send channel is arranged to the first estate.
Wherein, if the sound signal intensity sent on channel is less than predetermined threshold value, and the voice signal received on channel is strong
Degree is more than predetermined threshold value, then the echo suppression grade that will send channel is arranged to the second grade.
Wherein, echo inhibition strength of the echo inhibition strength of the first estate less than the second grade.
Wherein, if the sound signal intensity for sending channel and receiving on channel is all higher than predetermined threshold value, channel will be sent
Echo suppress grade be arranged to the tertiary gradient.
Wherein, the echo inhibition strength of the tertiary gradient is more than the echo inhibition strength of the first estate and less than the second grade
Echo inhibition strength.
Wherein, the first estate is not carry out echo cancellor to sending the voice signal on channel.
Wherein, the echo for setting transmission channel according to testing result suppresses magnitude step also to be included：Calculate and receive on channel
Sound signal intensity with send channel on sound signal intensity difference.
The echo suppression grade for sending channel is set according to the difference, and wherein difference is bigger, then will send returning for channel
Sound suppresses grade and is arranged so that the echo inhibition strength for sending channel is higher.
In order to solve the above technical problems, another technical solution used in the present invention is：A kind of communication terminal is provided, the end
End includes：Detection module, for detecting the sound signal intensity sent on channel and reception channel；Setup module, for basis
Testing result sets the echo suppression grade for sending channel.
Wherein, the terminal also includes：Judge module, for judging to send channel and receiving the sound signal intensity on channel
Whether predetermined threshold value is more than.
Wherein, if the sound signal intensity sent on channel is more than predetermined threshold value, and the voice signal received on channel is strong
Degree be less than predetermined threshold value, then setup module will send channel echo suppress grade be arranged to the first estate.
Wherein, if the sound signal intensity sent on channel is less than predetermined threshold value, and the voice signal received on channel is strong
Degree be more than predetermined threshold value, then setup module will send channel echo suppress grade be arranged to the second grade.
Wherein, echo inhibition strength of the echo inhibition strength of the first estate less than the second grade.
Wherein, setup module is additionally operable to：When the sound signal intensity for sending channel and receive on channel is all higher than default threshold
During value, the echo suppression grade that will send channel is arranged to the tertiary gradient.
Wherein, the echo inhibition strength of the tertiary gradient is more than the echo inhibition strength of the first estate and less than the second grade
Echo inhibition strength.
Wherein, the terminal also includes：Computing module, for calculating the sound signal intensity and transmission channel received on channel
On sound signal intensity difference.
Setup module sets the echo suppression grade for sending channel according to the difference, and wherein difference is bigger, then will send
The echo of channel suppresses grade and is arranged so that the echo inhibition strength for sending channel is higher
The beneficial effects of the invention are as follows：The situation of prior art is different from, echo disappears during the hand-free call that the present invention is provided
Except method is by detecting the sound signal intensity sent on channel and reception channel, is set according to testing result and send returning for channel
Sound suppresses grade.Through the above way can be according to produced by the sound signal intensity for sending channel and receive on channel judges
Echo intensity, and then graduate suppression echo, improve speech quality during hand-free call.By the above method, user is not
With environment using it is different speak tone when can understand and smoothly carry out hand-free call.
Brief description of the drawings
The flow chart of the implementation method of echo cancel method one when Fig. 1 is hand-free call of the present invention；
Fig. 2 is the structural representation of the implementation method of communication terminal of the present invention.
Fig. 3 is the structural representation of another implementation method of communication terminal of the present invention.
Fig. 4 is the structural representation of the another implementation method of communication terminal of the present invention.
Fig. 5 is the structural representation of communication terminal a further embodiment of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, the every other implementation that those skilled in the art are obtained under the premise of creative work is not made
Example, belongs to the scope of protection of the invention.
Echo cancel method and communication terminal when the present invention provides a kind of hand-free call, the method are used for having call function
Communication terminal, the terminal can be mobile phone, panel computer, laptop computer, the wearable intelligent terminal with call function etc..
Fig. 1 is referred to, the flow chart of the implementation method of echo cancel method one when Fig. 1 is hand-free call of the present invention.The method
Including：
S101：Detection sends channel and receives the sound signal intensity on channel.
Alternatively, by detecting that send the pulse code value on channel and reception channel sends channel and reception to detect
Sound signal intensity on channel, will pulse code value as sound signal intensity.
Specifically, pulse code modulation (Pulse Code are both provided with transmission channel and reception channel
Modulation, PCM) detection module, transmission channel can be detected by this module and receive on channel whether have sound number
According to transmission, it is also possible to detect the intensity of voice signal.For example, number in audio codec (Encoder/Decoder, Codec)
The sampling resolution of mould/analog-digital converter (DAC/ADC) is 16, when full scale relative level (dB Full Scale, dBFS) is for most
Big code level is that PCM values are 65535 when dBFS values are 0, and the signal more than -45dBFS can be considered as voice signal, i.e. PCM values
More than 3584, wherein, PCM values are bigger, then sound signal intensity is bigger.In other embodiments, it is also possible to use its other party
Method detects the intensity of voice signal.
S102：The echo suppression grade for sending channel is set according to testing result.
It is alternatively possible to pass through to judge whether the sound signal intensity for sending channel and receiving on channel is more than predetermined threshold value
Suppress grade to set different echoes, wherein the predetermined threshold value for sending channel and receiving channel can be the same or different.
Then think that we, in speech, then thinks during less than predetermined threshold value when sending the sound signal intensity on channel and being more than predetermined threshold value
It is echo, is then considered other side in speech when receiving the sound signal intensity on channel and being more than predetermined threshold value.
Wherein, if the sound signal intensity sent on channel is more than predetermined threshold value, and the voice signal received on channel is strong
Degree is less than predetermined threshold value, then the echo suppression grade that will send channel is arranged to the first estate, and wherein the first estate is not for hair
Voice signal in channels carries out echo cancellor.I.e. when only we is in speech, by not to sending the sound letter on channel
Number echo cancellor is carried out, normal dialog context will not thus be eliminated as echo, enter disconnected without call
Continuous situation.
Wherein, if the sound signal intensity sent on channel is less than predetermined threshold value, and the voice signal received on channel is strong
Degree is more than predetermined threshold value, then the echo suppression grade that will send channel is arranged to the second grade, wherein the echo suppression of the first estate
Echo inhibition strength of the intensity processed less than the second grade.I.e. when only other side is in speech, by sending the sound letter on channel
The echo cancellor of most strong grade number is carried out, thus echo other side will not be transferred to as normal dialog context, so it is right
Side will not also hear the echo of oneself, make call apparent.
Wherein, if the sound signal intensity for sending channel and receiving on channel is all higher than predetermined threshold value, channel will be sent
Echo suppress grade and be arranged to the tertiary gradient, wherein the echo inhibition strength of the tertiary gradient suppresses more than the echo of the first estate
Intensity and less than the echo inhibition strength of the second grade.I.e. when both sides are in speech, by sending the voice signal on channel
Carry out weaker echo cancellor, so can avoid normal dialog context be eliminated too many echo will not be also transferred to it is right
Side, improves speech quality.Multiple predetermined threshold values can also be set in other embodiments, and then the suppression of more echoes is set
Grade, can be that user voluntarily selects echo to suppress grade, or communication eventually to adapt to different environment or speaking volume
The adjustment echo of self adaptation is held to suppress grade.
In other embodiments, according to the sound signal intensity calculated on reception channel and can also send on channel
The echo that the difference of sound signal intensity sends channel to set suppresses grade, and wherein difference is bigger, then will send returning for channel
Sound suppresses grade and is arranged so that the echo inhibition strength for sending channel is higher.Difference is more big, illustrates that mainly other side is saying
Words, echo intensity is higher, so needing the suppression that higher-strength is carried out to echo to eliminate.Specifically, it is also possible to pre-set many
Individual preset difference value, and then multiple corresponding echoes suppression grades are set.
Fig. 2 is referred to, Fig. 2 is the structural representation of the implementation method of communication terminal of the present invention.In the present embodiment, should
Communication terminal includes：Detection module 21 and setup module 22.
Detection module 21, for detecting the sound signal intensity sent on channel and reception channel.
Setup module 22, grade is suppressed for setting the echo sent on channel according to testing result.
Fig. 3 is referred to, Fig. 3 is the structural representation of another implementation method of communication terminal of the present invention.The communication terminal includes
Detection module 31, setup module 32 and judge module 33.
Judge module 33, for judging to send channel and receiving whether the sound signal intensity on channel is more than default threshold
Value.
Wherein, if the sound signal intensity sent on channel is more than predetermined threshold value, and the voice signal received on channel is strong
Degree be less than predetermined threshold value, then setup module 32 will send channel echo suppress grade be arranged to the first estate.
Wherein, if the sound signal intensity sent on channel is less than predetermined threshold value, and the voice signal received on channel is strong
Degree be more than predetermined threshold value, then setup module 32 will send channel echo suppress grade be arranged to the second grade.
Wherein, echo inhibition strength of the echo inhibition strength of the first estate less than the second grade.
Wherein, setup module 32 is additionally operable to：It is all higher than presetting when sending channel and receiving the sound signal intensity on channel
During threshold value, the echo suppression grade that will send channel is arranged to the tertiary gradient.
Wherein, the echo inhibition strength of the tertiary gradient is more than the echo inhibition strength of the first estate and less than the second grade
Echo inhibition strength.
Fig. 4 is referred to, Fig. 4 is the structural representation of the another implementation method of communication terminal of the present invention.The communication terminal includes
Survey module 41, setup module 42 and computing module 43.
Computing module 43, for calculating the sound signal intensity on reception channel and sending the sound signal intensity on channel
Difference.
Setup module 42 sets the echo suppression grade for sending channel according to the difference, and wherein difference is bigger, then will hair
The echo of channels suppresses grade and is arranged so that the echo inhibition strength for sending channel is higher.
The modules of communication terminal can respectively perform correspondence step in above method implementation method in the respective embodiments described above
Suddenly, therefore each module is not repeated herein, the explanation of above correspondence step is referred in detail.
Fig. 5 is referred to, Fig. 5 is the structural representation of communication terminal a further embodiment of the present invention.
In the present embodiment, the processing unit includes：Memory 52, receiver 53 that processor 51 is coupled with processor 51
And transmitter 54.
Memory 52 is used for the predetermined threshold value or sound of storage program area, the instruction of the execution of processor 51 and voice signal
The preset difference value of message number, echo suppress grade etc..
Receiver 53 is used to receive voice signal.
Transmitter 54 is used to send voice signal.
Processor 51 includes digital signal processing unit (digital signal processing, DSP), and DSP includes
PCM detection sub-units and echo cancellor (Audio Echo Cancel, AEC) subelement.Specifically, receiver 53 receives sound
Signal, treatment parsing is carried out using DSP unit to voice signal, wherein detecting the PCM of voice signal by PCM detection sub-units
Value, is used to indicate sound signal intensity, the echo sent on channel is set further according to testing result and suppresses grade and by AEC lists
Unit is processed echo, and the voice signal that will be handled well is sent by transmitter 54.
Above scheme, what the present invention can be according to produced by the sound signal intensity for sending channel and receive on channel judges
Echo intensity, and then graduate suppression echo, improve speech quality during hand-free call.By the above method, user is not
With environment using it is different speak tone when can understand and smoothly carry out hand-free call.
In several implementation methods provided by the present invention, it should be understood that disclosed system, apparatus and method can
To realize by another way.For example, device embodiments described above are only schematical, for example, the mould
The division of block or unit, only a kind of division of logic function, can there is other dividing mode when actually realizing, such as multiple
Unit or component can be combined or be desirably integrated into another system, or some features can be ignored, or not performed.It is another
Point, shown or discussed coupling or direct-coupling or communication connection each other can be by some interfaces, device or
The INDIRECT COUPLING of unit or communication connection, can be electrical, mechanical or other forms.
The unit that is illustrated as separating component can be or may not be it is physically separate, it is aobvious as unit
The part for showing can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
On NE.Some or all of unit therein can be according to the actual needs selected to realize present embodiment scheme
Purpose.
In addition, during each functional unit in each implementation method of the invention can be integrated in a processing unit, also may be used
Being that unit is individually physically present, it is also possible to which two or more units are integrated in a unit.It is above-mentioned integrated
Unit can both be realized in the form of hardware, it would however also be possible to employ the form of SFU software functional unit is realized.
If the integrated unit is to realize in the form of SFU software functional unit and as independent production marketing or use
When, can store in a computer read/write memory medium.Based on such understanding, technical scheme is substantially
The part for being contributed to prior art in other words or all or part of the technical scheme can be in the form of software products
Embody, the computer software product is stored in a storage medium, including some instructions are used to so that a computer
Equipment (can be personal computer, server, or network equipment etc.) or processor (processor) perform the present invention each
The all or part of step of implementation method methods described.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage
(ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD
Etc. it is various can be with the medium of store program codes.
Embodiments of the present invention are the foregoing is only, the scope of the claims of the invention is not thereby limited, it is every using this
Equivalent structure or equivalent flow conversion that description of the invention and accompanying drawing content are made, or directly or indirectly it is used in other correlations
Technical field, is included within the scope of the present invention.
Claims (10)
1. echo cancel method during a kind of hand-free call, it is characterised in that including：
Detection sends channel and receives the sound signal intensity on channel；
The echo for sending channel is set according to testing result and suppresses grade.
2. method according to claim 1, it is characterised in that the detection sends channel and receives the sound letter on channel
The step of number intensity, includes：
Detection is described to be sent channel and receives the pulse code value on channel, and the pulse code value is believed as the sound
Number intensity.
3. method according to claim 1, it is characterised in that described setting according to testing result described sends returning for channel
The step of sound suppresses grade includes：
Judge whether the transmission channel and the sound signal intensity received on channel are more than predetermined threshold value；
If the sound signal intensity sent on channel is more than the predetermined threshold value, and the voice signal received on channel
Intensity is less than the predetermined threshold value, then the echo of the transmission channel is suppressed into grade is arranged to the first estate；
If the sound signal intensity sent on channel is less than the predetermined threshold value, and the voice signal received on channel
Intensity is more than the predetermined threshold value, then the echo of the transmission channel is suppressed into grade is arranged to the second grade；
Echo inhibition strength of the echo inhibition strength of wherein described the first estate less than second grade.
4. method according to claim 3, it is characterised in that described setting according to testing result described sends returning for channel
The step of sound suppresses grade further includes：
If the sound signal intensity sent on channel and the reception channel is all higher than the predetermined threshold value, by the hair
The echo of channels suppresses grade and is arranged to the tertiary gradient；
The echo inhibition strength of the wherein described tertiary gradient more than described the first estate echo inhibition strength and less than described the
The echo inhibition strength of two grades.
5. method according to claim 3, it is characterised in that described the first estate is not to the sound on the transmission channel
Message number carries out echo cancellor.
6. method according to claim 1, it is characterised in that described setting according to testing result described sends returning for channel
The step of sound suppresses grade includes：
The sound signal intensity received on channel is calculated with the difference for sending the sound signal intensity on channel；
The echo for sending channel is set according to the difference and suppresses grade, wherein the difference is bigger, then by the transmission
The echo of channel suppresses grade and is arranged so that the echo inhibition strength of the transmission channel is higher.
7. a kind of communication terminal, it is characterised in that including：
Detection module, for detecting the sound signal intensity sent on channel and reception channel；
Setup module, grade is suppressed for setting the echo for sending channel according to testing result.
8. communication terminal according to claim 7, it is characterised in that also include：
Judge module, for judging the transmission channel and receiving whether the sound signal intensity on channel is more than predetermined threshold value；
If the sound signal intensity sent on channel is more than the predetermined threshold value, and the voice signal received on channel
Intensity is less than the predetermined threshold value, then the echo of the transmission channel is suppressed grade and is arranged to first etc. by the setup module
Level；
If the sound signal intensity sent on channel is less than the predetermined threshold value, and the voice signal received on channel
Intensity is more than the predetermined threshold value, then the echo of the transmission channel is suppressed grade and is arranged to second etc. by the setup module
Level,
Echo inhibition strength of the echo inhibition strength of wherein described the first estate less than second grade.
9. communication terminal according to claim 7, it is characterised in that the setup module is additionally operable to：
When the sound signal intensity on the transmission channel and the reception channel is all higher than the predetermined threshold value, by the hair
The echo of channels suppresses grade and is arranged to the tertiary gradient；
The echo inhibition strength of the wherein described tertiary gradient more than described the first estate echo inhibition strength and less than described the
The echo inhibition strength of two grades.
10. communication terminal according to claim 8, it is characterised in that also include：
Computing module is strong with the voice signal sent on channel for calculating the sound signal intensity on the reception channel
The difference of degree；
The setup module sets the echo for sending channel and suppresses grade according to the difference, wherein the difference is bigger,
The echo of the transmission channel is then suppressed into grade and is arranged so that the echo inhibition strength of the transmission channel is higher.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611232980.3A CN106849976A (en) | 2016-12-28 | 2016-12-28 | Echo cancel method and communication terminal during a kind of hand-free call |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611232980.3A CN106849976A (en) | 2016-12-28 | 2016-12-28 | Echo cancel method and communication terminal during a kind of hand-free call |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106849976A true CN106849976A (en) | 2017-06-13 |
Family
ID=59115133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611232980.3A Pending CN106849976A (en) | 2016-12-28 | 2016-12-28 | Echo cancel method and communication terminal during a kind of hand-free call |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106849976A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107172313A (en) * | 2017-07-27 | 2017-09-15 | 广东欧珀移动通信有限公司 | Improve method, device, mobile terminal and the storage medium of hand-free call quality |
| CN107360530A (en) * | 2017-07-03 | 2017-11-17 | 苏州科达科技股份有限公司 | The method of testing and device of a kind of echo cancellor |
| CN107819964A (en) * | 2017-11-10 | 2018-03-20 | 广东欧珀移动通信有限公司 | Improve method, apparatus, terminal and the computer-readable recording medium of speech quality |
| CN109361827A (en) * | 2018-10-22 | 2019-02-19 | 杭州叙简科技股份有限公司 | A kind of secondary suppressing method of the echo of communication terminal |
| CN111613235A (en) * | 2020-05-11 | 2020-09-01 | 浙江华创视讯科技有限公司 | Echo cancellation method and device |
| CN112927708A (en) * | 2021-03-25 | 2021-06-08 | 北京儒博科技有限公司 | Method, device, equipment and storage medium for enhancing and suppressing residual acoustic echo |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1405991A (en) * | 2001-09-20 | 2003-03-26 | 三菱电机株式会社 | Echo treatment apparatus |
| US20080075293A1 (en) * | 2006-09-26 | 2008-03-27 | Fujitsu Limited | Electronic device, echo canceling method thereof, echo canceling program thereof, recording medium, circuit substrate, and portable telephone terminal device |
| CN101179295A (en) * | 2006-11-10 | 2008-05-14 | 索尼株式会社 | Echo canceller and communication audio processing apparatus |
| WO2014156037A1 (en) * | 2013-03-28 | 2014-10-02 | 株式会社デンソー | Hands-free device for vehicle |
| CN104969537A (en) * | 2012-12-21 | 2015-10-07 | 微软技术许可有限责任公司 | Echo suppression |
-
2016
- 2016-12-28 CN CN201611232980.3A patent/CN106849976A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1405991A (en) * | 2001-09-20 | 2003-03-26 | 三菱电机株式会社 | Echo treatment apparatus |
| US20080075293A1 (en) * | 2006-09-26 | 2008-03-27 | Fujitsu Limited | Electronic device, echo canceling method thereof, echo canceling program thereof, recording medium, circuit substrate, and portable telephone terminal device |
| CN101179295A (en) * | 2006-11-10 | 2008-05-14 | 索尼株式会社 | Echo canceller and communication audio processing apparatus |
| CN104969537A (en) * | 2012-12-21 | 2015-10-07 | 微软技术许可有限责任公司 | Echo suppression |
| WO2014156037A1 (en) * | 2013-03-28 | 2014-10-02 | 株式会社デンソー | Hands-free device for vehicle |
Non-Patent Citations (1)
| Title |
|---|
| 刘昱等: "数字电视系统中一种音量平衡技术的研究", 《电声技术》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107360530A (en) * | 2017-07-03 | 2017-11-17 | 苏州科达科技股份有限公司 | The method of testing and device of a kind of echo cancellor |
| CN107172313A (en) * | 2017-07-27 | 2017-09-15 | 广东欧珀移动通信有限公司 | Improve method, device, mobile terminal and the storage medium of hand-free call quality |
| CN107819964A (en) * | 2017-11-10 | 2018-03-20 | 广东欧珀移动通信有限公司 | Improve method, apparatus, terminal and the computer-readable recording medium of speech quality |
| CN107819964B (en) * | 2017-11-10 | 2021-04-06 | Oppo广东移动通信有限公司 | Method, device, terminal and computer readable storage medium for improving call quality |
| CN109361827A (en) * | 2018-10-22 | 2019-02-19 | 杭州叙简科技股份有限公司 | A kind of secondary suppressing method of the echo of communication terminal |
| CN109361827B (en) * | 2018-10-22 | 2021-02-09 | 杭州叙简科技股份有限公司 | Echo secondary suppression method for communication terminal |
| CN111613235A (en) * | 2020-05-11 | 2020-09-01 | 浙江华创视讯科技有限公司 | Echo cancellation method and device |
| CN112927708A (en) * | 2021-03-25 | 2021-06-08 | 北京儒博科技有限公司 | Method, device, equipment and storage medium for enhancing and suppressing residual acoustic echo |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106849976A (en) | Echo cancel method and communication terminal during a kind of hand-free call | |
| CN104521247B (en) | Bluetooth headset hearing aid and anti-noise method and apparatus | |
| US10269369B2 (en) | System and method of noise reduction for a mobile device | |
| CN102197422B (en) | Audio source proximity estimation using sensor array for noise reduction | |
| KR101085042B1 (en) | Network entity, method and computer readable storage medium for mixing signals during a conference session | |
| EP1622349B1 (en) | Teleconference volume level monitoring and feedback on the volume level | |
| US20070237339A1 (en) | Environmental noise reduction and cancellation for a voice over internet packets (VOIP) communication device | |
| US20110181452A1 (en) | Usage of Speaker Microphone for Sound Enhancement | |
| CN103718568A (en) | A method and system for improving voice communication experience in mobile communication devices | |
| US8687796B2 (en) | Method and electronic device for improving communication quality based on ambient noise sensing | |
| CN101163354A (en) | Method for operating a hearing aid, and hearing aid | |
| CN101370322A (en) | Microphone gain control method and communication equipment | |
| CN101578848A (en) | Methods and devices for adaptive ringtone generation | |
| CN105657110B (en) | Echo cancellation method and device for voice communication | |
| CN100508031C (en) | Method for identifying and eliminating echo generated by speech at remote end in SCDMA handset | |
| CN102158778A (en) | Method, equipment and system for reducing headset noise | |
| CN103534942A (en) | Processing audio signals | |
| CN101588561A (en) | Method and apparatus for setting telephony mode of mobile terminal | |
| US9532138B1 (en) | Systems and methods for suppressing audio noise in a communication system | |
| CN101188876A (en) | Method for operating a hearing aid, and hearing aid | |
| CN108337353A (en) | The audio signal processing method and equipment of communication equipment | |
| US9787824B2 (en) | Method of processing telephone signals and electronic device thereof | |
| US7054436B2 (en) | Communication terminals with a dual use speaker for sensing background noise and generating sound, and related methods and computer program products | |
| CN111063363A (en) | Voice acquisition method, audio equipment and device with storage function | |
| CN109218879A (en) | Headphone, method and computer-readable medium for headphone |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170613 |