CN107331407A - Descending call noise-reduction method and device - Google Patents
Descending call noise-reduction method and device Download PDFInfo
- Publication number
- CN107331407A CN107331407A CN201710475831.8A CN201710475831A CN107331407A CN 107331407 A CN107331407 A CN 107331407A CN 201710475831 A CN201710475831 A CN 201710475831A CN 107331407 A CN107331407 A CN 107331407A
- Authority
- CN
- China
- Prior art keywords
- voice signal
- mic
- voice
- signal
- terminal equipment
- 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.)
- Granted
Links
Classifications
-
- 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
- G10L21/0216—Noise filtering characterised by the method used for estimating noise
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/19—Arrangements of transmitters, receivers, or complete sets to prevent eavesdropping, to attenuate local noise or to prevent undesired transmission; Mouthpieces or receivers specially adapted therefor
-
- 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
- G10L21/0216—Noise filtering characterised by the method used for estimating noise
- G10L2021/02161—Number of inputs available containing the signal or the noise to be suppressed
- G10L2021/02165—Two microphones, one receiving mainly the noise signal and the other one mainly the speech signal
Abstract
The embodiment of the present invention provides a kind of descending call noise-reduction method and device, and applied to first terminal equipment, this method includes：Receive and the first MIC and the 2nd MIC is provided with the dual microphone MIC voice signals that second terminal equipment is sent, second terminal equipment, double MIC voice signals are the signal after handling the first MIC and the 2nd the MIC voice signal collected；The first voice signal and the second voice signal are obtained in double MIC voice signals, the first voice signal is the signal after the voice signal that the first MIC is collected is transmitted, and the second voice signal is the signal after the voice signal that the 2nd MIC is collected is transmitted；Difference processing is carried out to the first voice signal and the second voice signal, targeted voice signal is obtained.Speech quality for improving terminal device.
Description
Technical field
The present embodiments relate to communication technical field, more particularly to a kind of descending call noise-reduction method and device.
Background technology
Many terminal devices (equipment such as mobile phone, tablet personal computer) are respectively provided with voice call function, are set in terminal device
Microphone (Microphone, MIC) and receiver, user can input voice by MIC into terminal device, and be connect by receiver
Listen the voice of other side.
At present, there are two MIC, when user inputs voice by MIC into terminal device, two in most terminal devices
Individual MIC can collect voice signal, and the voice signal that terminal device is collected to two MIC carries out noise reduction process,
And send the voice signal after noise reduction process to other terminal devices by wireless network.Voice letter is received in terminal device
Number when, voice signal is played by receiver.However, during voice signal passes through wireless network transmissions, may be in language
Increase transmitted noise signal in message number so that the voice that terminal device is played by receiver includes noise, causes terminal to set
Standby voice call quality is poor.
The content of the invention
The embodiment of the present invention provides a kind of descending call noise-reduction method and device, improves the voice call matter of terminal device
Amount.
In a first aspect, the embodiment of the present invention provides a kind of descending call noise-reduction method, it is described applied to first terminal equipment
Method includes：
Receive and the is provided with the dual microphone MIC voice signals that second terminal equipment is sent, the second terminal equipment
One MIC and the 2nd MIC, described pair of MIC voice signal is the voice letter collected to the first MIC and the 2nd MIC
Signal after number being handled；
The first voice signal and the second voice signal, first voice signal are obtained in described pair of MIC voice signal
Signal after being transmitted for the first MIC voice signals collected, second voice signal is the 2nd MIC
The voice signal collected be transmitted after signal；
Difference processing is carried out to first voice signal and second voice signal, targeted voice signal is obtained.
In a kind of possible embodiment, the first voice signal and the second language are obtained in described pair of MIC voice signal
Message number, including：
Processing is demodulated to described pair of MIC voice signal；
Digital-to-analogue conversion processing is carried out to double MIC voice signals after demodulation process, first voice signal and institute is obtained
State the second voice signal.
In alternatively possible embodiment, difference is carried out to first voice signal and second voice signal
Processing, obtains targeted voice signal, including：
Obtain the attenuation coefficient between the first MIC and the 2nd MIC；
According to first voice signal, second voice signal, default difference algorithm and the attenuation coefficient, it is determined that
The targeted voice signal.
In alternatively possible embodiment, according to first voice signal, second voice signal, default poor
Divide algorithm and the attenuation coefficient, determine the targeted voice signal, including：
According to equation below one, the targeted voice signal y is determined, the formula one is the default difference algorithm correspondence
Formula：
Wherein, the y1For first voice signal, the y2For second voice signal, the k is the decay
Coefficient.
In alternatively possible embodiment, the attenuation coefficient between the first MIC and the 2nd MIC is obtained,
Including：
Before the described pair of MIC voice signal that the second terminal equipment is sent is received, the second terminal is received
The attenuation coefficient that equipment is sent.
Second aspect, the embodiment of the present invention provides a kind of descending call denoising device, applied to first terminal equipment, including
Receiving module, acquisition module and noise reduction process module, wherein,
The receiving module is used for, and receives the dual microphone MIC voice signals that second terminal equipment is sent, described second eventually
The first MIC and the 2nd MIC is provided with end equipment, described pair of MIC voice signal is to the first MIC and the 2nd MIC
The voice signal collected handled after signal；
The acquisition module is used for, and the first voice signal and the second voice signal are obtained in described pair of MIC voice signal,
First voice signal is the signal after the voice signal that the first MIC is collected is transmitted, second voice
Signal is the signal after the voice signal that the 2nd MIC is collected is transmitted；
The noise reduction process module is used for, and first voice signal and second voice signal are carried out at difference
Reason, obtains targeted voice signal.
In a kind of possible embodiment, the acquisition module specifically for：
Processing is demodulated to described pair of MIC voice signal；
Digital-to-analogue conversion processing is carried out to double MIC voice signals after demodulation process, first voice signal and institute is obtained
State the second voice signal.
In alternatively possible embodiment, the noise reduction process module includes acquiring unit and noise reduction unit, wherein,
The acquiring unit is used for, and obtains the attenuation coefficient between the first MIC and the 2nd MIC；
The noise reduction unit is used for, according to first voice signal, second voice signal, default difference algorithm and
The attenuation coefficient, determines the targeted voice signal.
In alternatively possible embodiment, the noise reduction unit is used for：
According to equation below one, the targeted voice signal y is determined, the formula one is the default difference algorithm correspondence
Formula：
Wherein, the y1For first voice signal, the y2For second voice signal, the k is the decay
Coefficient.
In alternatively possible embodiment, the acquiring unit specifically for：
Before the receiving module receives the described pair of MIC voice signal that the second terminal equipment is sent, receive
The attenuation coefficient that the second terminal equipment is sent
Descending call noise-reduction method and device provided in an embodiment of the present invention, first is provided with second terminal equipment
MIC and the 2nd MIC, when second terminal equipment sends voice signal to first terminal equipment, not to the first MIC and the 2nd MIC
The voice signal collected carries out noise reduction process, and the voice signal only collected to the first MIC and the 2nd MIC carries out modulus
The processing such as conversion, modulation.After double MIC voice signals that first terminal equipment receives the transmission of second terminal equipment, second
Terminal device obtains the first voice signal and the second voice signal in double MIC voice signals, and to the first voice signal and
Two voice signals carry out difference processing, obtain targeted voice signal, in targeted voice signal include ambient noise signal and
Transmitted noise signal so that only include the voice signal that user inputs in targeted voice signal, and then improve the language of terminal device
Sound speech quality.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are this hairs
Some bright embodiments, for those of ordinary skill in the art, without having to pay creative labor, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the application scenarios schematic diagram of descending call noise-reduction method provided in an embodiment of the present invention；
Fig. 2 is the schematic flow sheet one of descending call noise-reduction method provided in an embodiment of the present invention；
Fig. 3 is the schematic flow sheet two of descending call noise-reduction method provided in an embodiment of the present invention；
Fig. 4 is the structural representation one of descending call denoising device provided in an embodiment of the present invention；
Fig. 5 is the structural representation two of descending call denoising device provided in an embodiment of the present invention.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
Fig. 1 is the application scenarios schematic diagram of descending call noise-reduction method provided in an embodiment of the present invention.Fig. 1 is referred to, is wrapped
Include first terminal equipment 101 and second terminal equipment 102.First terminal equipment 101 and second terminal equipment 102 are provided with voice
Call function.Optionally, first terminal equipment 101 and second terminal equipment 102 can be the equipment such as mobile phone, tablet personal computer.
Two MIC are provided with second terminal equipment 102, MIC1 and MIC2 are designated as respectively, MIC1 is arranged on terminal device
Downside, MIC2 is arranged on the upside of terminal device.When user 1 inputs voice by the MIC of second terminal equipment 102, MIC1 and
MIC2 can collect voice signal, and the voice signal that second terminal equipment is collected to MIC1 and MIC2 carries out modulus
The processing such as conversion, modulation, obtain double MIC voice signals, and now, double MIC voice signals include the voice and ring of the input of user 1
Border noise.Second terminal equipment 102 sends double MIC voice signals by wireless network.
In double MIC voice signals during by wireless network transmissions, transmission can be added in double MIC voice signals
Noise, when double MIC voice signals reach first terminal equipment 101 when, double MIC voice signals include user 1 input voice,
Ambient noise and transmitted noise.
After first terminal equipment 101 receives double MIC voice signals, the double MIC voices letters of 101 pairs of first terminal equipment
Number carry out after digital-to-analogue conversion, the processing such as demodulation, double MIC voice signals are carried out with difference noise reduction process, and then to pass through receiver
Only include the voice that user 1 inputs in the voice of broadcasting, and then improve the voice call quality of terminal device.
Below, by specific embodiment, the technical scheme shown in the application is described in detail.It should be noted that
Several specific embodiments can be combined with each other below, for same or analogous content, no longer carry out in various embodiments
Repeat.
Fig. 2 is the schematic flow sheet one of descending call noise-reduction method provided in an embodiment of the present invention.Refer to Fig. 2, the party
Method can include：
The first MIC is provided with S201, the double MIC voice signals for receiving the transmission of first terminal equipment, first terminal equipment
With the 2nd MIC, double MIC voice signals are the letter after handling the first MIC and the 2nd the MIC voice signal collected
Number.
The executive agent of the embodiment of the present invention can be descending call denoising device (hereinafter referred denoising device), noise reduction dress
Put and be arranged in second terminal equipment, optionally, denoising device can be realized by software, or, denoising device can pass through
Software and hardware is implemented in combination with.
During second terminal equipment and first terminal equipment carry out voice communication, denoising device can be in real time or all
Phase to execution Fig. 2 embodiments shown in technical scheme, can also be received in second terminal equipment first terminal equipment transmission
A voice segments after perform technical scheme shown in Fig. 2 embodiments, the embodiment of the present invention is not especially limited to this.
In embodiments of the present invention, carry out being provided with two in the second terminal equipment of voice communication with first terminal equipment
MIC, therefore, the voice signal that first terminal equipment is sent to second terminal equipment are double MIC voice signals.Optionally, first
A MIC can be provided with terminal device, two MIC can also be provided with, the embodiment of the present invention is not especially limited to this.
Optionally, double MIC voice signals can carry out mould for the voice signal collected to the first MIC and the 2nd MIC
Obtained signal after number conversion, modulation treatment.
S202, in double MIC voice signals obtain the first voice signal and the second voice signal.
Optionally, double MIC voice signals can be demodulated with processing, and double MIC signals after demodulation process are carried out
Digital-to-analogue conversion is handled, and obtains the first voice signal and the second voice signal.Wherein, the first voice signal is that the first MIC is gathered
To voice signal be transmitted after signal, the second voice signal is that the voice signals that collect of the 2nd MIC are transmitted
Signal afterwards.
Optionally, the first voice signal includes voice letter of the user by the first MIC inputs in second terminal equipment
Number, the voice signal (voice of user's input that collects of the ambient noise signals that collect of the first MIC and the first MIC
Signal and ambient noise signal) the increased transmitted noise signal in transmitting procedure.
Optionally, the second voice signal includes voice letter of the user by the 2nd MIC inputs in second terminal equipment
Number, the voice signal (voice of user's input that collects of the ambient noise signals that collect of the 2nd MIC and the 2nd MIC
Signal and ambient noise signal) the increased transmitted noise signal in transmitting procedure.
Optionally, the position of the first MIC and the 2nd MIC in second terminal equipment is typically different, for example, the first MIC can
To be arranged on the downside of second terminal equipment, the 2nd MIC can be arranged on the upside of terminal device.User is using second terminal
During equipment, the usual MIC of distance the first of mouth of user is nearer, the MIC of distance the 2nd farther out, therefore, the first MIC and second
The voice signal for the user that MIC is collected is different.
Optionally, ambient noise is the mixing of a variety of noises present in the environment residing for second terminal equipment, for example, ring
Border noise can include the sound that the spoken sounds of other users, object (automobile etc.) are produced in environment residing for second terminal equipment
Sound etc..The distance between ambient noise and the first MIC and the 2nd MIC can be with approximately equals, therefore, and the first MIC and the 2nd MIC are adopted
Collecting obtained ambient noise can be with approximately equal.
Optionally, the double MIC voice signals generated in second terminal equipment include the voice letter that the first MIC is collected
Number and the voice signals that collect of the 2nd MIC, during double MIC voice signals are by wireless network transmissions, the first MIC
The transmission channel for the voice signal that the voice signal and the 2nd MIC collected is collected is identical, therefore, is passing through wireless network
After network transmission, the transmitted noise in transmitted noise and the second voice signal in the first voice signal can be with approximately equal.
S203, difference processing is carried out to the first voice signal and the second voice signal, obtain targeted voice signal.
Assuming that the first voice signal is y1=a+m+n, the second voice signal is y2=ka+m+n；Wherein, a is that the first MIC is adopted
Collect the voice signal of obtained user, k is the attenuation coefficient between the first MIC and the 2nd MIC, and ka is that the 2nd MIC is collected
User voice signal；M is the ambient noise signal that the first MIC and the 2nd MIC are collected, and n is the biography in transmitting procedure
Defeated noise signal.
Optionally, when needing to carry out difference processing to the first voice signal and the second voice signal, first can be obtained
Attenuation coefficient k between MIC and the 2nd MIC, according to the first voice signal, the second voice signal, default difference algorithm and decay
Coefficient, determines targeted voice signal.Optionally, after first terminal equipment and second terminal equipment set up call, and the
One terminal device and second terminal equipment start before transmission of speech signals, and second terminal equipment sends the to first terminal equipment
Attenuation coefficient in two terminal devices between the first MIC and the 2nd MIC, optionally, second terminal equipment can precalculate
Attenuation coefficient between one MIC and the 2nd MIC, and the attenuation coefficient is stored in default memory space, so, work as second terminal
When equipment is needed to first terminal equipment transmission attenuation coefficient, directly obtained in default memory space.
Optionally, targeted voice signal can be determined according to the corresponding formula one of default difference algorithm：
Assuming that the first voice signal is y1=a+m+n, the second voice signal is y2=ka+m+n, then according to above-mentioned formula one
It is determined that obtained echo signal is：
From the foregoing, it will be observed that in the echo signal for the first voice signal and the second voice signal obtain after difference processing
In only include the first MIC collect user input voice signal, not including ambient noise signal and transmitted noise signal.
Descending call noise-reduction method provided in an embodiment of the present invention, is provided with the first MIC and in second terminal equipment
Two MIC, when second terminal equipment sends voice signal to first terminal equipment, are not collected to the first MIC and the 2nd MIC
Voice signal carry out noise reduction process, the voice signal that is only collected to the first MIC and the 2nd MIC carries out analog-to-digital conversion, adjusted
The processing such as system.After double MIC voice signals that first terminal equipment receives the transmission of second terminal equipment, second terminal equipment
The first voice signal and the second voice signal are obtained in double MIC voice signals, and the first voice signal and the second voice are believed
Number carry out difference processing, obtain targeted voice signal, in targeted voice signal not include ambient noise signal and transmitted noise
Signal so that only include the voice signal that user inputs in targeted voice signal, and then improve the voice call matter of terminal device
Amount.
On the basis of any one above-mentioned embodiment, below, by the embodiment shown in Fig. 3, to shown in the application
Technical scheme is further elaborated.
Fig. 3 is the schematic flow sheet two of descending call noise-reduction method provided in an embodiment of the present invention.Refer to Fig. 3, the party
Method can include：
S301, first terminal equipment and second terminal equipment set up voice call connection after, second terminal equipment to
First terminal equipment sends the attenuation coefficient between the first MIC and the 2nd MIC.
Wherein, the 2nd MIC and the 2nd MIC are two MIC being arranged in second terminal equipment.
The voice that the voice signal and the 2nd MIC that S302, the first MIC of second terminal equipment acquisition are collected are collected
Signal.
The voice signal that first MIC is collected include user's input that the first MIC collects voice signal and
Ambient noise signal, for example, it is assumed that the signal that the first MCI is collected is x1, then x1=a+m, wherein, a gathers for the first MIC
The voice signal of obtained user, m is the ambient noise signal that the first MIC is collected.
The voice signal that 2nd MIC is collected include user's input that the 2nd MIC collects voice signal and
Ambient noise signal, for example, it is assumed that the signal that the 2nd MCI is collected is x2, then x2=ka+m, wherein, k is the first MIC and the
Attenuation coefficient between two MIC, ka is the voice signal for the user that the 2nd MIC is collected, and m is what the 2nd MIC was collected
Ambient noise signal.
The voice letter that S303, second terminal equipment are collected to the first MIC voice signals collected and the 2nd MIC
Number analog-to-digital conversion and modulation treatment are carried out, obtain initial double MIC voice signals.
Wherein, initial double MIC voice signals include voice signal and the 2nd MIC that the first MIC collects and gathered
The voice signal arrived.
S304, second terminal equipment send initial double MIC voice signals to first terminal equipment.
, can be in initial double MIC voice signals in initial double MIC voice signals during by wireless network transmissions
Increase transmitted noise signal, specifically, the voice letter collected in the first MIC voice signals collected and the 2nd MIC
Identical ambient noise can be increased in number.
S305, in initial double MIC voice signals after transmission, first terminal equipment receives double MIC voice signals.
S306, first terminal equipment are demodulated and digital-to-analogue conversion process to double MIC voice signals, obtain the first voice letter
Number and the second voice signal.
The voice signal x collected in the first MIC1=a+m adds biography after transmission in the voice signal
Defeated noise, obtains the first voice signal y1=a+m+n.Wherein, n is transmitted noise.
The voice signal x collected in the 2nd MIC2=ka+m is added after transmission in the voice signal
Transmitted noise, obtains the second voice signal y2=ka+m+n.Wherein, n is transmitted noise.
S307, first terminal equipment carry out difference processing to the first voice signal and the second voice signal, obtain target letter
Number.
Optionally, first terminal equipment is according to above-mentioned formula one, to the first voice signal y1=a+m+n and the second voice letter
Number y2=ka+m+n carries out difference processing, obtains echo signal y=a.
In above process, second terminal equipment to first terminal equipment when sending double MIC voice signals, not to double
MIC voice signals carry out noise reduction process, but when first terminal equipment receives double MIC voice signals, just to double MIC voices
Signal carries out noise reduction process, obtains echo signal, in this manner it is ensured that not including transmitted noise in echo signal so that target
Only include the voice signal that user inputs in voice signal, and then improve the voice call quality of terminal device.
Fig. 4 is the structural representation one of descending call denoising device provided in an embodiment of the present invention, and the device can be set
In first terminal equipment.Fig. 4 is referred to, the device can include receiving module 11, acquisition module 12 and noise reduction process module 13,
Wherein,
The receiving module 11 is used for, and receives the dual microphone MIC voice signals that second terminal equipment is sent, described second
The first MIC and the 2nd MIC is provided with terminal device, described pair of MIC voice signal is to the first MIC and described second
The voice signal that MIC is collected handled after signal；
The acquisition module 12 is used for, and the first voice signal and the second voice letter are obtained in described pair of MIC voice signal
Number, first voice signal is the signal after the voice signal that the first MIC is collected is transmitted, second language
Message number is the signal after the voice signal that the 2nd MIC is collected is transmitted；
The noise reduction process module 13 is used for, and first voice signal and second voice signal are carried out at difference
Reason, obtains targeted voice signal.
Descending call denoising device provided in an embodiment of the present invention can perform the technical side shown in above method embodiment
Case, its realization principle and beneficial effect are similar, are no longer repeated herein.
In a kind of possible embodiment, the acquisition module specifically for：
Processing is demodulated to described pair of MIC voice signal；
Digital-to-analogue conversion processing is carried out to double MIC voice signals after demodulation process, first voice signal and institute is obtained
State the second voice signal.
Fig. 5 is the structural representation two of descending call denoising device provided in an embodiment of the present invention, in embodiment illustrated in fig. 4
On the basis of, Fig. 5 is referred to, the noise reduction process module 13 includes acquiring unit 131 and noise reduction unit 132, wherein,
The acquiring unit 131 is used for, and obtains the attenuation coefficient between the first MIC and the 2nd MIC；
The noise reduction unit 132 is used for, and is calculated according to first voice signal, second voice signal, default difference
Method and the attenuation coefficient, determine the targeted voice signal.
In alternatively possible embodiment, the noise reduction unit 132 is used for：
According to equation below one, the targeted voice signal y is determined, the formula one is the default difference algorithm correspondence
Formula：
Wherein, the y1For first voice signal, the y2For second voice signal, the k is the decay
Coefficient.
In alternatively possible embodiment, the acquiring unit 131 specifically for：
Before the receiving module 11 receives the described pair of MIC voice signal that the second terminal equipment is sent, connect
Receive the attenuation coefficient that the second terminal equipment is sent
Descending call denoising device provided in an embodiment of the present invention can perform the technical side shown in above method embodiment
Case, its realization principle and beneficial effect are similar, are no longer repeated herein.
One of ordinary skill in the art will appreciate that：Realizing all or part of step of above-mentioned each method embodiment can lead to
The related hardware of programmed instruction is crossed to complete.Foregoing program can be stored in a computer read/write memory medium.The journey
Sequence upon execution, performs the step of including above-mentioned each method embodiment；And foregoing storage medium includes：ROM, RAM, magnetic disc or
Person's CD etc. is various can be with the medium of store program codes.
Finally it should be noted that：Various embodiments above is only to the technical scheme for illustrating the embodiment of the present invention, rather than to it
Limitation；Although the embodiment of the present invention is described in detail with reference to foregoing embodiments, one of ordinary skill in the art
It should be understood that：It can still modify to the technical scheme described in foregoing embodiments, or to which part or
All technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from this hair
The scope of bright embodiment scheme.
Claims (10)
1. a kind of descending call noise-reduction method, it is characterised in that applied to first terminal equipment, methods described includes：
Receive in the dual microphone MIC voice signals that second terminal equipment is sent, the second terminal equipment and be provided with the first MIC
With the 2nd MIC, described pair of MIC voice signal is that the voice signal collected to the first MIC and the 2nd MIC is carried out
Signal after processing；
The first voice signal and the second voice signal are obtained in described pair of MIC voice signal, first voice signal is institute
The signal after the voice signal that the first MIC collects is transmitted is stated, second voice signal is the 2nd MIC collections
Obtained voice signal be transmitted after signal；
Difference processing is carried out to first voice signal and second voice signal, targeted voice signal is obtained.
2. according to the method described in claim 1, it is characterised in that the first voice letter is obtained in described pair of MIC voice signal
Number and the second voice signal, including：
Processing is demodulated to described pair of MIC voice signal；
Digital-to-analogue conversion processing is carried out to double MIC voice signals after demodulation process, first voice signal and described the is obtained
Two voice signals.
3. method according to claim 1 or 2, it is characterised in that to first voice signal and second voice
Signal carries out difference processing, obtains targeted voice signal, including：
Obtain the attenuation coefficient between the first MIC and the 2nd MIC；
According to first voice signal, second voice signal, default difference algorithm and the attenuation coefficient, it is determined that described
Targeted voice signal.
4. method according to claim 3, it is characterised in that believed according to first voice signal, second voice
Number, default difference algorithm and the attenuation coefficient, determine the targeted voice signal, including：
According to equation below one, the targeted voice signal y is determined, the formula one is the corresponding public affairs of the default difference algorithm
Formula：
Wherein, the y1For first voice signal, the y2For second voice signal, the k is the decay system
Number.
5. method according to claim 3, it is characterised in that declining between acquisition the first MIC and the 2nd MIC
Subtract coefficient, including：
Before the described pair of MIC voice signal that the second terminal equipment is sent is received, the second terminal equipment is received
The attenuation coefficient sent.
6. a kind of descending call denoising device, it is characterised in that applied to first terminal equipment, including receiving module, acquisition mould
Block and noise reduction process module, wherein,
The receiving module is used for, and receives the dual microphone MIC voice signals that second terminal equipment is sent, and the second terminal is set
The first MIC and the 2nd MIC is provided with standby, described pair of MIC voice signal is that the first MIC and the 2nd MIC is gathered
Obtained voice signal handled after signal；
The acquisition module is used for, and the first voice signal and the second voice signal are obtained in described pair of MIC voice signal, described
First voice signal is the signal after the voice signal that the first MIC is collected is transmitted, second voice signal
Signal after being transmitted for the 2nd MIC voice signals collected；
The noise reduction process module is used for, and carries out difference processing to first voice signal and second voice signal, obtains
To targeted voice signal.
7. device according to claim 6, it is characterised in that the acquisition module specifically for：
Processing is demodulated to described pair of MIC voice signal；
Digital-to-analogue conversion processing is carried out to double MIC voice signals after demodulation process, first voice signal and described the is obtained
Two voice signals.
8. the device according to claim 6 or 7, it is characterised in that the noise reduction process module includes acquiring unit and drop
Make an uproar unit, wherein,
The acquiring unit is used for, and obtains the attenuation coefficient between the first MIC and the 2nd MIC；
The noise reduction unit is used for, and according to first voice signal, second voice signal, presets difference algorithm and described
Attenuation coefficient, determines the targeted voice signal.
9. device according to claim 8, it is characterised in that the noise reduction unit is used for：
According to equation below one, the targeted voice signal y is determined, the formula one is the corresponding public affairs of the default difference algorithm
Formula：
Wherein, the y1For first voice signal, the y2For second voice signal, the k is the decay system
Number.
10. device according to claim 8, it is characterised in that the acquiring unit specifically for：
Before the receiving module receives the described pair of MIC voice signal that the second terminal equipment is sent, receive described
The attenuation coefficient that second terminal equipment is sent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710475831.8A CN107331407B (en) | 2017-06-21 | 2017-06-21 | Method and device for reducing noise of downlink call |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710475831.8A CN107331407B (en) | 2017-06-21 | 2017-06-21 | Method and device for reducing noise of downlink call |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107331407A true CN107331407A (en) | 2017-11-07 |
| CN107331407B CN107331407B (en) | 2020-10-16 |
Family
ID=60194005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710475831.8A Active CN107331407B (en) | 2017-06-21 | 2017-06-21 | Method and device for reducing noise of downlink call |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107331407B (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2318770Y (en) * | 1997-03-28 | 1999-05-12 | 徐忠义 | Microphone with anti-strong-sound interference |
| US20030061032A1 (en) * | 2001-09-24 | 2003-03-27 | Clarity, Llc | Selective sound enhancement |
| CN1643571A (en) * | 2002-03-27 | 2005-07-20 | 艾黎弗公司 | Nicrophone and voice activity detection (vad) configurations for use with communication systems |
| CN1797544A (en) * | 2004-12-30 | 2006-07-05 | 华为技术有限公司 | Method and device for voice process at wireless terminal |
| EP1830348A1 (en) * | 2006-03-01 | 2007-09-05 | Harman/Becker Automotive Systems GmbH | Hands-free system for speech signal acquisition |
| US20090287482A1 (en) * | 2006-12-22 | 2009-11-19 | Hetherington Phillip A | Ambient noise compensation system robust to high excitation noise |
| US20110129098A1 (en) * | 2009-10-28 | 2011-06-02 | Delano Cary L | Active noise cancellation |
| WO2012176932A1 (en) * | 2011-06-24 | 2012-12-27 | 日本電気株式会社 | Speech processing device, speech processing method, and speech processing program |
| CN102969003A (en) * | 2012-11-15 | 2013-03-13 | 东莞宇龙通信科技有限公司 | Image pickup sound extracting method and device |
| CN103888580A (en) * | 2014-03-31 | 2014-06-25 | 宇龙计算机通信科技(深圳)有限公司 | Noise reduction method in terminal recording process and terminal |
| CN104092802A (en) * | 2014-05-27 | 2014-10-08 | 中兴通讯股份有限公司 | Method and system for de-noising audio signal |
| CN104464745A (en) * | 2014-12-17 | 2015-03-25 | 中航华东光电（上海）有限公司 | Two-channel speech enhancement system and method |
| CN105940445A (en) * | 2016-02-04 | 2016-09-14 | 曾新晓 | Voice communication system and method |
| CN205864519U (en) * | 2016-07-15 | 2017-01-04 | 深圳普罗迪通信有限公司 | VOX double MIC calibration optimizes circuit |
| CN106790882A (en) * | 2016-12-29 | 2017-05-31 | 贵州财富之舟科技有限公司 | Communication Dolby circuit and noise-reduction method |
-
2017
- 2017-06-21 CN CN201710475831.8A patent/CN107331407B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2318770Y (en) * | 1997-03-28 | 1999-05-12 | 徐忠义 | Microphone with anti-strong-sound interference |
| US20030061032A1 (en) * | 2001-09-24 | 2003-03-27 | Clarity, Llc | Selective sound enhancement |
| CN1643571A (en) * | 2002-03-27 | 2005-07-20 | 艾黎弗公司 | Nicrophone and voice activity detection (vad) configurations for use with communication systems |
| CN1797544A (en) * | 2004-12-30 | 2006-07-05 | 华为技术有限公司 | Method and device for voice process at wireless terminal |
| EP1830348A1 (en) * | 2006-03-01 | 2007-09-05 | Harman/Becker Automotive Systems GmbH | Hands-free system for speech signal acquisition |
| US20090287482A1 (en) * | 2006-12-22 | 2009-11-19 | Hetherington Phillip A | Ambient noise compensation system robust to high excitation noise |
| US20110129098A1 (en) * | 2009-10-28 | 2011-06-02 | Delano Cary L | Active noise cancellation |
| WO2012176932A1 (en) * | 2011-06-24 | 2012-12-27 | 日本電気株式会社 | Speech processing device, speech processing method, and speech processing program |
| CN102969003A (en) * | 2012-11-15 | 2013-03-13 | 东莞宇龙通信科技有限公司 | Image pickup sound extracting method and device |
| CN103888580A (en) * | 2014-03-31 | 2014-06-25 | 宇龙计算机通信科技(深圳)有限公司 | Noise reduction method in terminal recording process and terminal |
| CN104092802A (en) * | 2014-05-27 | 2014-10-08 | 中兴通讯股份有限公司 | Method and system for de-noising audio signal |
| CN104464745A (en) * | 2014-12-17 | 2015-03-25 | 中航华东光电（上海）有限公司 | Two-channel speech enhancement system and method |
| CN105940445A (en) * | 2016-02-04 | 2016-09-14 | 曾新晓 | Voice communication system and method |
| CN205864519U (en) * | 2016-07-15 | 2017-01-04 | 深圳普罗迪通信有限公司 | VOX double MIC calibration optimizes circuit |
| CN106790882A (en) * | 2016-12-29 | 2017-05-31 | 贵州财富之舟科技有限公司 | Communication Dolby circuit and noise-reduction method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107331407B (en) | 2020-10-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106878533B (en) | Communication method and device of mobile terminal | |
| CN101277331B (en) | Sound reproducing device and sound reproduction method | |
| CN104521247B (en) | Bluetooth headset hearing aid and anti-noise method and apparatus | |
| CN105979197B (en) | Teleconference control method and device based on sound automatic identification of uttering long and high-pitched sounds | |
| CN106797508B (en) | For improving the method and earphone of sound quality | |
| CN103873975B (en) | A kind of methods, devices and systems realizing bluetooth earphone noise reduction | |
| CN105959842A (en) | Earphone noise reduction processing method and device, and earphone | |
| CN104092801A (en) | Intelligent terminal call noise reduction method and intelligent terminal | |
| CN100508031C (en) | Method for identifying and eliminating echo generated by speech at remote end in SCDMA handset | |
| CN113542960B (en) | Audio signal processing method, system, device, electronic equipment and storage medium | |
| CN115482830B (en) | Voice enhancement method and related equipment | |
| CN110277103A (en) | Noise-reduction method and terminal based on speech recognition | |
| CN105827793B (en) | A kind of speech-oriented output method and mobile terminal | |
| CN107978320A (en) | One kind call method of adjustment, device, equipment and medium | |
| CN110265056A (en) | The control method and loudspeaking unit of source of sound | |
| CN108520754A (en) | A kind of noise reduction meeting machine | |
| CN106849976A (en) | Echo cancel method and communication terminal during a kind of hand-free call | |
| CN105847566A (en) | Mobile terminal audio volume adjusting method and device | |
| US20240096343A1 (en) | Voice quality enhancement method and related device | |
| CN103402038B (en) | Under Mobile phone hand-free state, eliminate method and the device of the echo of the other side's receiver | |
| CN109600703B (en) | Sound amplification system, sound amplification method thereof, and computer-readable storage medium | |
| CN110769352B (en) | Signal processing method and device and computer storage medium | |
| CN113038318B (en) | Voice signal processing method and device | |
| CN108154886A (en) | Noise suppressing method and device, electronic device and computer readable storage medium | |
| CN103606374A (en) | Noise elimination and echo suppression method and device of thin terminal |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |