CN106960670A - A kind of way of recording and electronic equipment - Google Patents
A kind of way of recording and electronic equipment Download PDFInfo
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- CN106960670A CN106960670A CN201710188199.9A CN201710188199A CN106960670A CN 106960670 A CN106960670 A CN 106960670A CN 201710188199 A CN201710188199 A CN 201710188199A CN 106960670 A CN106960670 A CN 106960670A
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- audio signals
- recorded audio
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- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
- G01S3/80—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using ultrasonic, sonic or infrasonic waves
- G01S3/802—Systems for determining direction or deviation from predetermined direction
- G01S3/803—Systems for determining direction or deviation from predetermined direction using amplitude comparison of signals derived from receiving transducers or transducer systems having differently-oriented directivity characteristics
- G01S3/8034—Systems for determining direction or deviation from predetermined direction using amplitude comparison of signals derived from receiving transducers or transducer systems having differently-oriented directivity characteristics wherein the signals are derived simultaneously
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
- G01S3/80—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using ultrasonic, sonic or infrasonic waves
- G01S3/802—Systems for determining direction or deviation from predetermined direction
- G01S3/808—Systems for determining direction or deviation from predetermined direction using transducers spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems
- G01S3/8083—Systems for determining direction or deviation from predetermined direction using transducers spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems determining direction of source
-
- 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
-
- 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
Abstract
A kind of way of recording of disclosure and electronic equipment, the electronic equipment at least include the first microphone and second microphone.Methods described includes obtaining the recorded audio signals of first microphone, the second microphone and the 3rd microphone, and the recorded audio signals include the signal corresponding at least one sound source；Determine the target recorded audio signals in the recorded audio signals；Based on the target recorded audio signals determined, the recorded audio signals are carried out with noise reduction process, and generate the recording file for including the target recorded audio signals.It can be seen that, application scheme can carry out noise reduction process to many sound source signals by determining target recorded audio signals from many sound source signals, and based on target recorded audio signals, the target recorded audio signals can be protruded in many sound source recorded audio signals to realize.So as to which the application can be realized carries out emphasis pickup to a certain voice signal in many sound source signals.
Description
Technical field
The invention belongs to audio signal processing technique field, more particularly to a kind of way of recording and electronic equipment.
Background technology
At present, the mobile terminal such as recording pen of smart mobile phone, panel computer and specialty typically all has sound-recording function, with
Meet recording demand of the user in daily life and work.
Often there are multiple personages when being recorded using the sound-recording function of mobile terminal, in playback environ-ment and say in user
The sound of words and various environmental noises, i.e. for the microphone for realizing sound-recording function, its surrounding there may be many
Individual sound source, accordingly, microphone can record the voice signal of multiple sound sources to get off to form recording file.However,
User is often only interested in some signal therein, the sound that the speaker in specific direction sends during such as lecture, or
Voice signal of the larger personnel of sound etc. when round table is had a meeting, based on this, this area need to provide a kind of recording scheme, with realization pair
A certain voice signal in many sound source signals carries out emphasis pickup.
The content of the invention
In view of this, it is an object of the invention to provide a kind of way of recording and electronic equipment, it is intended to realizes to many sound
A certain voice signal in source signal carries out emphasis pickup.
To solve the above problems, the application provides following technical scheme：
A kind of way of recording, applied to electronic equipment, the electronic equipment at least includes the first microphone and the second Mike
Wind, methods described includes：
Obtain the recorded audio signals of first microphone, the second microphone and the 3rd microphone；The recording letter
Number include the signal corresponding at least one sound source；
Determine the target recorded audio signals in the recorded audio signals；
Based on the target recorded audio signals determined, the recorded audio signals are carried out with noise reduction process, and generate comprising institute
State the recording file of target recorded audio signals.
The above method, it is preferred that the 3rd microphone is positioned over the pre-position of the electronic equipment, three Mikes
The position of wind is different；Wherein, the 3rd microphone is the external microphone of the electronic equipment.
The above method, it is preferred that the target recorded audio signals determined in the recorded audio signals, including：
Determine the recorded audio signals of amplitude maximum in the recorded audio signals of each microphone as target recorded audio signals.
The above method, it is preferred that the target recorded audio signals determined in the recorded audio signals, including：
The relative position information of first microphone, the second microphone and the 3rd microphone is obtained, with
And obtain the phase difference and/or width of signal each two microphone in three microphones of each sound source in the recorded audio signals
Value difference；
Signal according to the relative position information of three microphones, and each sound source is reached in three microphones
The time difference of each two microphone and/or phase difference, it is determined that the azimuth information of each sound source；
Determine that the azimuth information of the sound source signal consistent with preset bearing information is as mesh in the recorded audio signals
Mark recorded audio signals.
The recorded audio signals are dropped by the above method, it is preferred that described based on the target recorded audio signals determined
Make an uproar processing, including：
Two target Mikes are selected from first microphone, the second microphone and the 3rd microphone
Wind；
According to the corresponding target recorded audio signals of described two target microphones, except described two target microphones
The recorded audio signals of described two target microphones are carried out noise reduction process by the recorded audio signals of other microphone.
The above method, it is preferred that described from first microphone, the second microphone and the 3rd microphone
Two target microphones are selected, including：
Obtain the time difference that the target recorded audio signals reach any two microphone in three microphones；
Determine two microphones of corresponding time difference maximum as described two target microphones.
The above method, it is preferred that described according to the corresponding target recorded audio signals of described two target microphones, using described
The recorded audio signals of described two target microphones are entered by the recorded audio signals of other microphone except two target microphones
Row noise reduction process, including：
The gain for the target recorded audio signals that the recorded audio signals of described two target microphones include is lifted, target record is obtained
The gain of message number is able to the first recorded audio signals lifted and the second recorded audio signals；
Using the recorded audio signals of other microphone as noise signal, first recorded audio signals and second are recorded
Message number carries out noise reduction process, obtains the recorded audio signals after the corresponding noise reduction process of described two target microphones.
A kind of electronic equipment, at least including the first microphone and second microphone, the electronic equipment also includes：
Processor, the processor is used to perform：
Obtain the recorded audio signals of first microphone, the second microphone and the 3rd microphone；The recording letter
Number include the signal corresponding at least one sound source；
Determine the target recorded audio signals in the recorded audio signals；
Based on the target recorded audio signals determined, the recorded audio signals are carried out with noise reduction process, and generate comprising institute
State the recording file of target recorded audio signals.
Above-mentioned electronic equipment, it is preferred that the processor, determines the target recorded audio signals in the recorded audio signals, enters
One step includes：
Determine the recorded audio signals of amplitude maximum in the recorded audio signals of each microphone as target recorded audio signals.
Above-mentioned electronic equipment, it is preferred that the processor, determines the target recorded audio signals in the recorded audio signals, enters
One step includes：
The relative position information of first microphone, the second microphone and the 3rd microphone is obtained, with
And obtain the phase difference and/or width of signal each two microphone in three microphones of each sound source in the recorded audio signals
Value difference；Signal according to the relative position information of three microphones, and each sound source reaches every in three microphones
The time difference of two microphones and/or phase difference, it is determined that the azimuth information of each sound source；Determine the recorded audio signals
The azimuth information of the middle sound source signal consistent with preset bearing information is used as target recorded audio signals.
Above-mentioned electronic equipment, it is preferred that the processor, based on the target recorded audio signals determined, to the record
Message number carries out noise reduction process, further comprises：
Two target Mikes are selected from first microphone, the second microphone and the 3rd microphone
Wind；According to the corresponding target recorded audio signals of described two target microphones, other except described two target microphones are utilized
The recorded audio signals of described two target microphones are carried out noise reduction process by the recorded audio signals of one microphone.
From above scheme, a kind of way of recording that the application is provided, can be applied at least to include the first microphone and
The electronic equipment of second microphone, methods described includes obtaining first microphone, the second microphone and wheat, barley and highland barley
The recorded audio signals of gram wind；The recorded audio signals include the signal corresponding at least one sound source；Determine the recording letter
Target recorded audio signals in number；Based on the target recorded audio signals determined, the recorded audio signals are carried out with noise reduction process, and
Generation includes the recording file of the target recorded audio signals.It can be seen that, application scheme can be by determining from many sound source signals
Go out target recorded audio signals, and noise reduction process is carried out to many sound source signals based on target recorded audio signals, to realize in many sound
The target recorded audio signals can be protruded in source of sound recorded audio signals.So as to present application addresses problem above, realize to many
A certain voice signal in sound source signals carries out emphasis pickup.
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
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
The embodiment of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
The accompanying drawing of offer obtains other accompanying drawings.
Fig. 1 is a kind of flow chart for way of recording embodiment one that the application is provided；
Fig. 2 is a kind of flow chart for way of recording embodiment two that the application is provided；
Fig. 3 is a kind of flow chart for way of recording embodiment three that the application is provided；
Fig. 4 (a)-Fig. 4 (c) is the exemplary plot for the different predetermined recording directions that the embodiment of the present application three is provided；
Fig. 5 is a kind of flow chart for way of recording example IV that the application is provided；
Fig. 6 is the structural representation for a kind of electronic equipment embodiment five that the application is provided.
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, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Embodiment one
The embodiment of the present invention one provides a kind of way of recording, it is intended to realize to a certain voice signal in many sound source signals
Carry out emphasis pickup.This method can be applied to electronic equipment, and the electronic equipment can be, but not limited to, smart mobile phone, flat board
The mobile terminal such as computer and the recording pen of specialty, the electronic equipment at least includes the first microphone and second microphone, ginseng
A kind of flow chart of way of recording embodiment one shown in Fig. 1 is examined, methods described may comprise steps of：
Step 101, the recorded audio signals for obtaining first microphone, the second microphone and the 3rd microphone；Institute
Stating recorded audio signals includes the signal corresponding at least one sound source.
Wherein, the 3rd microphone, can be the electronic equipment include remove first microphone and second
The External microphone of other microphones or the electronic equipment outside microphone.The application is not construed as limiting to this.
Exemplarily, in current smart mobile phone or panel computer, dual microphone is typically all included, such as including setting
Put and be mainly used as the main microphon of call pickup in mobile phone bottom, and be arranged on the drop for being mainly used as noise reduction at the mobile phone back side
Make an uproar microphone.Based on this, in the application, during first microphone, second microphone can be respectively then the dual microphone
One of any, and the 3rd microphone, then can be specifically that the diamylose gram terminal device is improved, at the end
Other microphones set are added in end equipment, or, the 3rd microphone or the diamylose gram terminal device
External microphone, for example, the microphone that the peripheral earphone of specifically described diamylose gram terminal device is provided, or outside
Single microphone connect etc..
It should be noted that the position of three microphones is different, for example, the position of three microphones specifically may make up one or three
Angular, each microphone is at the vertex of a triangle, if the 3rd microphone is the external wheat of the electronic equipment
Gram wind, then the 3rd microphone can be positioned over the pre-position of the electronic equipment, as described in can specifically be positioned over
Directly over the center of electronic equipment screen etc..
The application is main to carry out many sound source signals recording by using three microphones, and to three microphones
Many sound source recorded audio signals are handled, and emphasis pickup is carried out to a certain voice signal in many sound source signals to realize.
Based on this, in this step, when being recorded using three microphones, the record of three microphones is obtained
Message number, wherein, the recorded audio signals include the signal corresponding at least one sound source, for example, for giving lessons, lecture etc.
Speaker's voice signal, and some environmental noise signals etc. can be included in scene, the recorded audio signals, for roundtable conference
Voice signal and environmental noise signal of multiple personnels participating in the meeting etc. can be included in scene, the recorded audio signals.
Step 102, the target recorded audio signals determined in the recorded audio signals.
In the case where the recorded audio signals include many sound source signals, user is often only to some signal therein
It is interested, such as it is above-mentioned give lessons, lecture scene, user is normally only interested in the voice signal of speaker (lecturer/expert etc.),
And for above-mentioned roundtable conference scene, user is normally only interested in the maximum signal of wherein sound.
Based on this, on the basis of the recorded audio signals of three microphones are obtained, this step is specific to sieve using predetermined signal
Choosing strategy, from many sound source signals that the recorded audio signals include, determines the target recording letter that disclosure satisfy that user's request
Number.
Step 103, based on the target recorded audio signals determined, the recorded audio signals are carried out with noise reduction process, and raw
Into the recording file for including the target recorded audio signals.
After the target recorded audio signals are determined, the target recorded audio signals can be based on, are believed including many sound sources
Number the recorded audio signals carry out noise reduction process, specifically, can by the recorded audio signals in addition to the target recorded audio signals
Other signals, the noise reduction process such as gain are filtered or are reduced as noise signal, so that in the recorded audio signals
In can at least protrude the target recorded audio signals.
Accordingly, in the recording file generated after noise reduction process, at least including the target recorded audio signals,
And other signals in addition to the target recorded audio signals that other microphone of signal, i.e., three are gathered in recording,
It is filtered out, otherwise gain is reduced, so that the target recording that can at least be given prominence to the key points in the recording file
Signal, and then realize the emphasis pickup to the target recorded audio signals.
A kind of way of recording provided from above scheme, the application, can be by determining from many sound source signals
Target recorded audio signals, and noise reduction process is carried out to many sound source signals based on the target recorded audio signals, to realize many
The target recorded audio signals can be protruded in sound source recorded audio signals.So as to present application addresses problem above, realize pair
A certain voice signal in many sound source signals carries out emphasis pickup.
Embodiment two
In the present embodiment, a kind of flow chart of way of recording embodiment two with reference to shown in Fig. 2, in the step 102, really
The target recorded audio signals in the recorded audio signals are made, can be realized by following processing procedure：
Step 1021：Determine the recorded audio signals of amplitude maximum in the recorded audio signals of each microphone as target recording letter
Number.
In the specific many sound source recorded audio signals provided from each microphone of the present embodiment, the signal of amplitude maximum is selected
Handled as the target recorded audio signals, enabling to the signal of amplitude maximum in the recorded audio signals of many sound sources
Carry out emphasis pickup.
Specifically, the scene such as roundtable conference, often has that multiple personnels participating in the meeting confer jointly, from
And, cause the presence of multiple sound sources, and in general, at the time of each is specific, the corresponding multiple sound of the multiple sound source
A main signal is only existed in message number, for example, at each specific moment in conference process, normally only have a main speech
People, other personnels participating in the meeting be then likely to be at listen attentively to or it is small denounciation discuss state so that the intensity of sound of the main spokesman is most
Height, for such recording scene, the voice signal of the user often main spokesman interested, i.e., each sound letter
Intensity of sound highest signal in number, from the aspects of signal characteristic, the amplitude of the corresponding voice signal of the main spokesman is most
Greatly, based on this, the present embodiment specifically selects the signal of amplitude maximum in the recorded audio signals of many sound sources, is used as target record
Message number.
It should be noted that in Recording Process, it is right that the target recorded audio signals are not necessarily a certain specific sound source institute
The voice signal answered, with recording scene, each sound source provides the dynamic change of the amplitude of signal, the target recording
Signal is also likely to be dynamic change, still by taking above-mentioned roundtable conference as an example, it is assumed that current time, personnel A be main spokesman, then its
Corresponding signal amplitude is maximum, so that, it may be determined that go out the target recorded audio signals for the corresponding voice signals of personnel A, as personnel A
After speech is finished, it is assumed that personnel B continues to make a speech, then the signal of amplitude maximum is turned to by personnel A voice signal change in the scene
Personnel B voice signal, correspondingly, the target recorded audio signals voice signal that also dynamic change is personnel B.
In many sound source recorded audio signals that the present embodiment specifically provides each microphone, the signal of amplitude maximum is used as institute
State target recorded audio signals to be handled, can effectively meet in many sound source recording scenes, user is carried out to the signal of amplitude maximum
The demand of emphasis pickup.
Embodiment three
In the present embodiment, a kind of flow chart of way of recording embodiment three with reference to shown in Fig. 3, in the step 102, really
The target recorded audio signals in the recorded audio signals are made, can be realized by following processing procedure：
Step 1022, the relative position for obtaining first microphone, the second microphone and the 3rd microphone
Confidence ceases, and obtains the phase of signal each two microphone in three microphones of each sound source in the recorded audio signals
Difference and/or difference in magnitude.
Step 1023, the relative position information according to three microphones, and the signal of each sound source reach three
The time difference of each two microphone and/or phase difference in individual microphone, it is determined that the azimuth information of each sound source；
Step 1024, determine the azimuth information of the sound source letter consistent with preset bearing information in the recorded audio signals
Number it is used as target recorded audio signals.
The present embodiment is intended to from many sound source recorded audio signals of each microphone offer, is selected in preset bearing
Recorded audio signals corresponding to sound source, are handled as the target recorded audio signals, are realized with this to from preset bearing
Voice signal carries out emphasis pickup, that is to say, that realization is oriented recording to the voice signal from preset bearing.
Wherein, the preset bearing information can be preset by user or technical staff, the preset bearing information tool
Body can be an angle information, either or a relative direction information or can also be both combinations.
So that the preset bearing information is angle information as an example, it is assumed that be set to 30 °, such as shown in Fig. 4 (a), then may be used
, with the orientation corresponding to the described 30 ° three-dimensional circular cones for cone angle, it will specifically be defined as using electronic equipment top center as summit
The preset bearing, so that electronic equipment can carry out emphasis to the voice signal in the orientation corresponding to the three-dimensional circular cone
Pickup.
The relative direction information, can specifically represent sound source relative to the direction residing for electronic equipment, for example specifically
Can be east/south/west/north, or left/right, or the more directional information of fine granulation, such as southeast/northeast, it is assumed that user will
The relative direction information is set to left or right, shown in such as Fig. 4 (b) and Fig. 4 (c), then can by electronic equipment just to the left body or
Orientation pointed by the body of right side is as the preset bearing, so that electronic equipment can be to its just body or right side body to the left
The voice signal in pointed orientation carries out emphasis pickup.
In practical application, user can be according to actual demand, by accordingly being put to electronic equipment so that by target sound
Source of sound is included in the range of the emphasis pickup of electronic equipment, that is, is included in the preset bearing of the electronic equipment, and then is caused
Electronic equipment can carry out emphasis pickup to the signal of the target sound source.Teaching/lecture scene is such as directed to, can be by electronics
Dais orientation is pointed at the top of equipment to be put, and is enable to fixed in a certain position or in dais scope on dais
The voice signal of the lecturer/expert inside walked about carries out emphasis pickup etc..
Pre-set the azimuth information and to electronic equipment perform needed for put operation after, electronic equipment start into
Row recording is handled, and enables to carry out emphasis pickup to the signal of the sound source in the preset bearing.Wherein, need first
Determine the true bearing of each sound source.
Because three microphones are respectively at diverse location, so that phase of the signal in same sound source in different microphones
And amplitude there may be certain deviation, such as assume that the distance of sound source S and the first microphone is less than sound source S and the second wheat
The distance of gram wind, then correspondingly, sound source S signal reach time of second microphone compared to reach the first microphone when
Between, can exist and necessarily delay so that both phases can have certain deviation, and due to signal attenuation, sound source S signal is the
The amplitude of two microphones can accordingly be less than the amplitude in the first microphone.Based on this, three microphones of the present embodiment concrete foundation
Relative position information, and in many sound source recorded audio signals each sound source signal in three microphones each two Mike
The phase difference and/or difference in magnitude of wind, to calculate the azimuth information for obtaining the alternative sounds source corresponding to unlike signal.
Afterwards, azimuth information that can be according to each sound source, determines orientation residing for sound source from each voice signal
The signal consistent with azimuth information set in advance, as the target sound signal, to enable electronic equipment to described
Target recorded audio signals carry out emphasis pickup.
In many sound source recorded audio signals that the present embodiment specifically provides each microphone, the signal from preset bearing is made
Handled, can effectively be met in many sound source recording scenes, sound of the user to preset bearing for the target recorded audio signals
Source signal is oriented the demand of recording.
Example IV
In the present embodiment, a kind of flow chart of way of recording example IV with reference to shown in Fig. 5, in the step 103, base
In the target recorded audio signals determined, noise reduction process is carried out to the recorded audio signals, can further pass through following processing
Process is realized：
Step 1031, from first microphone, the second microphone and the 3rd microphone select two
Target microphone.
Step 1032, according to the corresponding target recorded audio signals of described two target microphones, utilize described two target wheats
The recorded audio signals of described two target microphones are carried out at noise reduction by the recorded audio signals of other microphone except gram wind
Reason.
Specifically, the present embodiment regard two target microphones in three microphones as the main Mike for carrying out pickup
Wind, remaining microphone, subsequently, can for aiding in described two target microphones to carry out noise reduction as noise reduction microphone
By the signal of two target microphones after noise reduction process, two-way recording file is processed into, and is respectively used to when needed left and right
The output application of sound channel.
Wherein, a kind of of two target microphones is selected from three microphones possible to be achieved in that：Obtain institute
State the time difference that target recorded audio signals reach any two microphone in three microphones；Determine the corresponding time difference most
Two big microphones are used as described two target microphones.
Here, it is necessary to illustrate, in the case where determining two target microphones using the time difference mode, once
Sound source is varied widely relative to the position of electronic equipment, then it is to make which will likely be redistributed in three microphones
To carry out the main microphon of pickup, which is used as noise reduction microphone.
Except the time difference mode, the selection of target microphone and noise reduction microphone can be also realized using other modes,
Any two in three microphones is for example chosen as target microphone, remaining microphone is used as noise reduction microphone etc., this reality
Example is applied to be not construed as limiting this.
On the basis of two target microphones and noise reduction microphone is determined, using the recording of the noise reduction microphone
The recorded audio signals of described two target microphones are carried out noise reduction process by signal.
Specifically, the target recording that many sound source recorded audio signals of described two target microphones include can be lifted first
The gain of signal, the gain for obtaining target recorded audio signals is able to the first recorded audio signals lifted and the second recorded audio signals；It is not difficult to manage
Solution, first recorded audio signals and the second recorded audio signals include the target recorded audio signals of gain lifting, and gain is not
Change other signals, and the noise reduction microphone then correspond to include the unchanged target recorded audio signals of gain and other signals,
, can be respectively by first recorded audio signals and second recorded audio signals based on this, the recorded audio signals with the noise reduction microphone
Make signal subtraction processing, so that other signals described in first recorded audio signals and second recorded audio signals are made
For noise-filtering, and then obtain the corresponding recorded audio signals for having filtered noise of two target microphones.
Here, it is necessary to which explanation, because the position of three microphones is different, causes the signal of same sound source in different wheats
Gram wind slightly has difference, such as there is the fine difference in phase and amplitude, the present embodiment is in the recording letter using noise reduction microphone
Number, noise reduction process is carried out to the recorded audio signals (signal for having lifted the gain of target recorded audio signals) of described two target microphones
When, ignore the signal of each microphone because of fine difference caused by the difference of microphone present position, that is, refuse small to these
Difference is accounted for.
Noise reduction process mode except more than, can also carry out noise reduction using other modes, for example, lifting many sound source recording
The gain of target recorded audio signals in signal, and reduce the gain of other signals simultaneously etc., enable to record in many sound sources
The prominent target recorded audio signals in signal, the present embodiment is not construed as limiting to this.
Embodiment five
The embodiment of the present invention five provides a kind of electronic equipment, it is intended to realize to a certain voice signal in many sound source signals
Carry out emphasis pickup.The electronic equipment can be, but not limited to, recording pen of smart mobile phone, panel computer and specialty etc.
Mobile terminal, the structural representation of a kind of electronic equipment embodiment five with reference to shown in Fig. 6, the electronic equipment at least includes the
One microphone 1 and second microphone 2, the electronic equipment also include：
Processor 3, the processor 3 is used to perform：
Obtain the recorded audio signals of first microphone, the second microphone and the 3rd microphone；The recording letter
Number include the signal corresponding at least one sound source；
Determine the target recorded audio signals in the recorded audio signals；
Based on the target recorded audio signals determined, the recorded audio signals are carried out with noise reduction process, and generate comprising institute
State the recording file of target recorded audio signals.
Wherein, the 3rd microphone, can be the electronic equipment include remove first microphone and second
The External microphone of other microphones or the electronic equipment outside microphone.The application is not construed as limiting to this.
Exemplarily, in current smart mobile phone or panel computer, dual microphone is typically all included, such as including setting
Put and be mainly used as the main microphon of call pickup in mobile phone bottom, and be arranged on the drop for being mainly used as noise reduction at the mobile phone back side
Make an uproar microphone.Based on this, in the application, during first microphone, second microphone can be respectively then the dual microphone
One of any, and the 3rd microphone, then can be specifically that the diamylose gram terminal device is improved, at the end
Other microphones set are added in end equipment, or, the 3rd microphone or the diamylose gram terminal device
External microphone, for example, the microphone that the peripheral earphone of specifically described diamylose gram terminal device is provided, or outside
Single microphone connect etc..
It should be noted that the position of three microphones is different, for example, the position of three microphones specifically may make up one or three
Angular, each microphone is at the vertex of a triangle, if the 3rd microphone is the external wheat of the electronic equipment
Gram wind, then the 3rd microphone can be positioned over the pre-position of the electronic equipment, as described in can specifically be positioned over
Directly over the center of electronic equipment screen etc..
The application is main to carry out many sound source signals recording by using three microphones, and to three microphones
Many sound source recorded audio signals are handled, and emphasis pickup is carried out to a certain voice signal in many sound source signals to realize.
Based on this, when being recorded using three microphones, processor 3 obtains the recording of three microphones
Signal, wherein, the recorded audio signals include the signal corresponding at least one sound source, for example, for giving lessons, the field such as lecture
Speaker's voice signal, and some environmental noise signals etc. can be included in scape, the recorded audio signals, for roundtable conference
Voice signal and environmental noise signal of multiple personnels participating in the meeting etc. can be included in scape, the recorded audio signals.
In the case where the recorded audio signals include many sound source signals, user is often only to some signal therein
It is interested, such as it is above-mentioned give lessons, lecture scene, user is normally only interested in the voice signal of speaker (lecturer/expert etc.),
And for above-mentioned roundtable conference scene, user is normally only interested in the maximum signal of wherein sound.
Based on this, on the basis of the recorded audio signals of three microphones are obtained, processor 3 is specific to be sieved using predetermined signal
Choosing strategy, from many sound source signals that the recorded audio signals include, determines the target recording letter that disclosure satisfy that user's request
Number.
After the target recorded audio signals are determined, processor 3 can be based on the target recorded audio signals, to including many sound
The recorded audio signals of sound source signal carry out noise reduction process, specifically, the target recording letter can will be removed in the recorded audio signals
Other signals outside number, are filtered or are reduced the noise reduction process such as gain as noise signal, so that in the record
The target recorded audio signals can be at least protruded in message number.
Accordingly, in the recording file generated after noise reduction process, at least including the target recorded audio signals,
And other signals in addition to the target recorded audio signals that other microphone of signal, i.e., three are gathered in recording,
It is filtered out, otherwise gain is reduced, so that the target recording that can at least be given prominence to the key points in the recording file
Signal, and then realize the emphasis pickup to the target recorded audio signals.
The a kind of electronic equipment provided from above scheme, the application, can be by determining from many sound source signals
Target recorded audio signals, and noise reduction process is carried out to many sound source signals based on the target recorded audio signals, to realize many
The target recorded audio signals can be protruded in sound source recorded audio signals.So as to present application addresses problem above, realize pair
A certain voice signal in many sound source signals carries out emphasis pickup.
Embodiment six
In the present embodiment, residing processor 3 determines the target recorded audio signals in the recorded audio signals, can by with
Lower processing procedure is realized：
Determine the recorded audio signals of amplitude maximum in the recorded audio signals of each microphone as target recorded audio signals.
In the specific many sound source recorded audio signals provided from each microphone of the present embodiment, the signal of amplitude maximum is selected
Handled as the target recorded audio signals, enabling to the signal of amplitude maximum in the recorded audio signals of many sound sources
Carry out emphasis pickup.
Specifically, the scene such as roundtable conference, often has that multiple personnels participating in the meeting confer jointly, from
And, cause the presence of multiple sound sources, and in general, at the time of each is specific, the corresponding multiple sound of the multiple sound source
A main signal is only existed in message number, for example, at each specific moment in conference process, normally only have a main speech
People, other personnels participating in the meeting be then likely to be at listen attentively to or it is small denounciation discuss state so that the intensity of sound of the main spokesman is most
Height, for such recording scene, the voice signal of the user often main spokesman interested, i.e., each sound letter
Intensity of sound highest signal in number, from the aspects of signal characteristic, the amplitude of the corresponding voice signal of the main spokesman is most
Greatly, based on this, the present embodiment specifically selects the signal of amplitude maximum in the recorded audio signals of many sound sources, is used as target record
Message number.
It should be noted that in Recording Process, it is right that the target recorded audio signals are not necessarily a certain specific sound source institute
The voice signal answered, with recording scene, each sound source provides the dynamic change of the amplitude of signal, the target recording
Signal is also likely to be dynamic change, still by taking above-mentioned roundtable conference as an example, it is assumed that current time, personnel A be main spokesman, then its
Corresponding signal amplitude is maximum, so that, it may be determined that go out the target recorded audio signals for the corresponding voice signals of personnel A, as personnel A
After speech is finished, it is assumed that personnel B continues to make a speech, then the signal of amplitude maximum is turned to by personnel A voice signal change in the scene
Personnel B voice signal, correspondingly, the target recorded audio signals voice signal that also dynamic change is personnel B.
In many sound source recorded audio signals that the present embodiment specifically provides each microphone, the signal of amplitude maximum is used as institute
State target recorded audio signals to be handled, can effectively meet in many sound source recording scenes, user is carried out to the signal of amplitude maximum
The demand of emphasis pickup.
Embodiment seven
In the present embodiment, the processor 3 determines the target recorded audio signals in the recorded audio signals, can by with
Lower processing procedure is realized：
The relative position information of first microphone, the second microphone and the 3rd microphone is obtained, with
And obtain the phase difference and/or width of signal each two microphone in three microphones of each sound source in the recorded audio signals
Value difference；Signal according to the relative position information of three microphones, and each sound source reaches every in three microphones
The time difference of two microphones and/or phase difference, it is determined that the azimuth information of each sound source；Determine the recorded audio signals
The azimuth information of the middle sound source signal consistent with preset bearing information is used as target recorded audio signals.
The present embodiment is intended to from many sound source recorded audio signals of each microphone offer, is selected in preset bearing
Recorded audio signals corresponding to sound source, are handled as the target recorded audio signals, are realized with this to from preset bearing
Voice signal carries out emphasis pickup, that is to say, that realization is oriented recording to the voice signal from preset bearing.
Wherein, the preset bearing information can be preset by user or technical staff, the preset bearing information tool
Body can be an angle information, either or a relative direction information or can also be both combinations.
So that the preset bearing information is angle information as an example, it is assumed that be set to 30 °, such as shown in Fig. 4 (a), then may be used
, with the orientation corresponding to the described 30 ° three-dimensional circular cones for cone angle, it will specifically be defined as using electronic equipment top center as summit
The preset bearing, so that electronic equipment can carry out emphasis to the voice signal in the orientation corresponding to the three-dimensional circular cone
Pickup.
The relative direction information, can specifically represent sound source relative to the direction residing for electronic equipment, for example specifically
Can be east/south/west/north, or left/right, or the more directional information of fine granulation, such as southeast/northeast, it is assumed that user will
The relative direction information is set to left or right, shown in such as Fig. 4 (b) and Fig. 4 (c), then can by electronic equipment just to the left body or
Orientation pointed by the body of right side is as the preset bearing, so that electronic equipment can be to its just body or right side body to the left
The voice signal in pointed orientation carries out emphasis pickup.
In practical application, user can be according to actual demand, by accordingly being put to electronic equipment so that by target sound
Source of sound is included in the range of the emphasis pickup of electronic equipment, that is, is included in the preset bearing of the electronic equipment, and then is caused
Electronic equipment can carry out emphasis pickup to the signal of the target sound source.Teaching/lecture scene is such as directed to, can be by electronics
Dais orientation is pointed at the top of equipment to be put, and is enable to fixed in a certain position or in dais scope on dais
The voice signal of the lecturer/expert inside walked about carries out emphasis pickup etc..
Pre-set the azimuth information and to electronic equipment perform needed for put operation after, electronic equipment start into
Row recording is handled, and enables to carry out emphasis pickup to the signal of the sound source in the preset bearing.Wherein, need first
Determine the true bearing of each sound source.
Because three microphones are respectively at diverse location, so that phase of the signal in same sound source in different microphones
And amplitude there may be certain deviation, such as assume that the distance of sound source S and the first microphone is less than sound source S and the second wheat
The distance of gram wind, then correspondingly, sound source S signal reach time of second microphone compared to reach the first microphone when
Between, can exist and necessarily delay so that both phases can have certain deviation, and due to signal attenuation, sound source S signal is the
The amplitude of two microphones can accordingly be less than the amplitude in the first microphone.Based on this, three microphones of the present embodiment concrete foundation
Relative position information, and in many sound source recorded audio signals each sound source signal in three microphones each two Mike
The phase difference and/or difference in magnitude of wind, to calculate the azimuth information for obtaining the alternative sounds source corresponding to unlike signal.
Afterwards, azimuth information that can be according to each sound source, determines orientation residing for sound source from each voice signal
The signal consistent with azimuth information set in advance, as the target sound signal, to enable electronic equipment to described
Target recorded audio signals carry out emphasis pickup.
In many sound source recorded audio signals that the present embodiment specifically provides each microphone, the signal from preset bearing is made
Handled, can effectively be met in many sound source recording scenes, sound of the user to preset bearing for the target recorded audio signals
Source signal is oriented the demand of recording.
Embodiment eight
In the present embodiment, the processor 3, based on the target recorded audio signals determined, enters to the recorded audio signals
Row noise reduction process, further can be realized by following processing procedure：
Two target Mikes are selected from first microphone, the second microphone and the 3rd microphone
Wind；According to the corresponding target recorded audio signals of described two target microphones, other except described two target microphones are utilized
The recorded audio signals of described two target microphones are carried out noise reduction process by the recorded audio signals of one microphone.
Specifically, the present embodiment regard two target microphones in three microphones as the main Mike for carrying out pickup
Wind, remaining microphone, subsequently, can for aiding in described two target microphones to carry out noise reduction as noise reduction microphone
By the signal of two target microphones after noise reduction process, two-way recording file is processed into, and is respectively used to when needed left and right
The output application of sound channel.
Wherein, a kind of of two target microphones is selected from three microphones possible to be achieved in that：Obtain institute
State the time difference that target recorded audio signals reach any two microphone in three microphones；Determine the corresponding time difference most
Two big microphones are used as described two target microphones.
Here, it is necessary to illustrate, in the case where determining two target microphones using the time difference mode, once
Sound source is varied widely relative to the position of electronic equipment, then it is to make which will likely be redistributed in three microphones
To carry out the main microphon of pickup, which is used as noise reduction microphone.
Except the time difference mode, the selection of target microphone and noise reduction microphone can be also realized using other modes,
Any two in three microphones is for example chosen as target microphone, remaining microphone is used as noise reduction microphone etc., this reality
Example is applied to be not construed as limiting this.
On the basis of two target microphones and noise reduction microphone is determined, using the recording of the noise reduction microphone
The recorded audio signals of described two target microphones are carried out noise reduction process by signal.
Specifically, the target recording that many sound source recorded audio signals of described two target microphones include can be lifted first
The gain of signal, the gain for obtaining target recorded audio signals is able to the first recorded audio signals lifted and the second recorded audio signals；It is not difficult to manage
Solution, first recorded audio signals and the second recorded audio signals include the target recorded audio signals of gain lifting, and gain is not
Change other signals, and the noise reduction microphone then correspond to include the unchanged target recorded audio signals of gain and other signals,
, can be respectively by first recorded audio signals and second recorded audio signals based on this, the recorded audio signals with the noise reduction microphone
Make signal subtraction processing, so that other signals described in first recorded audio signals and second recorded audio signals are made
For noise-filtering, and then obtain the corresponding recorded audio signals for having filtered noise of two target microphones.
Here, it is necessary to which explanation, because the position of three microphones is different, causes the signal of same sound source in different wheats
Gram wind slightly has difference, such as there is the fine difference in phase and amplitude, the present embodiment is in the recording letter using noise reduction microphone
Number, noise reduction process is carried out to the recorded audio signals (signal for having lifted the gain of target recorded audio signals) of described two target microphones
When, ignore the signal of each microphone because of fine difference caused by the difference of microphone present position, that is, refuse small to these
Difference is accounted for.
Noise reduction process mode except more than, can also carry out noise reduction using other modes, for example, lifting many sound source recording
The gain of target recorded audio signals in signal, and reduce the gain of other signals simultaneously etc., enable to record in many sound sources
The prominent target recorded audio signals in signal, the present embodiment is not construed as limiting to this.
It should be noted that each embodiment in this specification is described by the way of progressive, each embodiment weight
Point explanation be all between difference with other embodiment, each embodiment identical similar part mutually referring to.
For convenience of description, describe to be divided into various modules when system above or device with function or unit is described respectively.
Certainly, the function of each unit can be realized in same or multiple softwares and/or hardware when implementing the application.
As seen through the above description of the embodiments, those skilled in the art can be understood that the application can
Realized by the mode of software plus required general hardware platform.Understood based on such, the technical scheme essence of the application
On the part that is contributed in other words to prior art can be embodied in the form of software product, the computer software product
It can be stored in storage medium, such as ROM/RAM, magnetic disc, CD, including some instructions are to cause a computer equipment
(can be personal computer, server, or network equipment etc.) performs some of each embodiment of the application or embodiment
Method described in part.
Finally, in addition it is also necessary to explanation, herein, the relational terms of such as first, second, third and fourth or the like
It is used merely to make a distinction an entity or operation with another entity or operation, and not necessarily requires or imply these
There is any this actual relation or order between entity or operation.Moreover, term " comprising ", "comprising" or its is any
Other variants are intended to including for nonexcludability, so that process, method, article or equipment including a series of key elements
Not only include those key elements, but also other key elements including being not expressly set out, or also include being this process, side
Method, article or the intrinsic key element of equipment.In the absence of more restrictions, limited by sentence "including a ..."
Key element, it is not excluded that also there is other identical element in the process including the key element, method, article or equipment.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of way of recording, it is characterised in that applied to electronic equipment, the electronic equipment at least include the first microphone and
Second microphone, methods described includes：
Obtain the recorded audio signals of first microphone, the second microphone and the 3rd microphone；In the recorded audio signals
Including the signal corresponding at least one sound source；
Determine the target recorded audio signals in the recorded audio signals；
Based on the target recorded audio signals determined, the recorded audio signals are carried out with noise reduction process, and generate comprising the mesh
Mark the recording file of recorded audio signals.
2. the method according to right wants 1, it is characterised in that the 3rd microphone is positioned over the predetermined of the electronic equipment
At position, the position of three microphones is different；Wherein, the 3rd microphone is the external microphone of the electronic equipment.
3. according to the method described in claim 1, it is characterised in that the target recording letter determined in the recorded audio signals
Number, including：
Determine the recorded audio signals of amplitude maximum in the recorded audio signals of each microphone as target recorded audio signals.
4. according to the method described in claim 1, it is characterised in that the target recording letter determined in the recorded audio signals
Number, including：
The relative position information of first microphone, the second microphone and the 3rd microphone is obtained, and is obtained
Obtain the phase difference and/or amplitude of signal each two microphone in three microphones of each sound source in the recorded audio signals
Difference；
Signal according to the relative position information of three microphones, and each sound source is reached every two in three microphones
The time difference of individual microphone and/or phase difference, it is determined that the azimuth information of each sound source；
Determine that the azimuth information of the sound source signal consistent with preset bearing information is recorded as target in the recorded audio signals
Message number.
5. the method according to right wants 3 or 4, it is characterised in that described based on the target recorded audio signals determined, right
The recorded audio signals carry out noise reduction process, including：
Two target microphones are selected from first microphone, the second microphone and the 3rd microphone；
According to the corresponding target recorded audio signals of described two target microphones, other except described two target microphones are utilized
The recorded audio signals of described two target microphones are carried out noise reduction process by the recorded audio signals of one microphone.
6. the method according to right wants 5, it is characterised in that it is described from first microphone, the second microphone and
Two target microphones are selected in 3rd microphone, including：
Obtain the time difference that the target recorded audio signals reach any two microphone in three microphones；
Determine two microphones of corresponding time difference maximum as described two target microphones.
7. method according to claim 5, it is characterised in that described according to the corresponding target of described two target microphones
Recorded audio signals, using the recorded audio signals of other microphone except described two target microphones, to described two targets
The recorded audio signals of microphone carry out noise reduction process, including：
The gain for the target recorded audio signals that the recorded audio signals of described two target microphones include is lifted, target recording letter is obtained
Number gain be able to the first recorded audio signals lifted and the second recorded audio signals；
Using the recorded audio signals of other microphone as noise signal, to first recorded audio signals and the second recording letter
Number carry out noise reduction process, obtain the recorded audio signals after the corresponding noise reduction process of described two target microphones.
8. a kind of electronic equipment, it is characterised in that at least including the first microphone and second microphone, the electronic equipment is also wrapped
Include：
Processor, the processor is used to perform：
Obtain the recorded audio signals of first microphone, the second microphone and the 3rd microphone；In the recorded audio signals
Including the signal corresponding at least one sound source；
Determine the target recorded audio signals in the recorded audio signals；
Based on the target recorded audio signals determined, the recorded audio signals are carried out with noise reduction process, and generate comprising the mesh
Mark the recording file of recorded audio signals.
9. electronic equipment according to claim 8, it is characterised in that the processor, is determined in the recorded audio signals
Target recorded audio signals, further comprise：
Determine the recorded audio signals of amplitude maximum in the recorded audio signals of each microphone as target recorded audio signals.
10. electronic equipment according to claim 8, it is characterised in that the processor, is determined in the recorded audio signals
Target recorded audio signals, further comprise：
The relative position information of first microphone, the second microphone and the 3rd microphone is obtained, and is obtained
Obtain the phase difference and/or amplitude of signal each two microphone in three microphones of each sound source in the recorded audio signals
Difference；Signal according to the relative position information of three microphones, and each sound source is reached every two in three microphones
The time difference of individual microphone and/or phase difference, it is determined that the azimuth information of each sound source；Determine in the recorded audio signals
The azimuth information of the sound source signal consistent with preset bearing information is used as target recorded audio signals.
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