CN105611458A - Directed recording control method and device of mobile terminal - Google Patents
Directed recording control method and device of mobile terminal Download PDFInfo
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- UGAJKWZVPNVCIO-UHFFFAOYSA-N Terminalin Chemical compound O1C(=O)C(C2=3)=C(C4=C(O)C(O)=C(O)C=C4C(=O)O4)C4=C(O)C=3OC(=O)C3=C2C1=C(O)C(OC1=O)=C3C2=C1C=C(O)C(O)=C2O UGAJKWZVPNVCIO-UHFFFAOYSA-N 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
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Abstract
The invention discloses a directed recording control method and device of a mobile terminal. The method comprises that when a recording direction selection event is found via monitoring, recording direction information input by a user is obtained; the recording direction is determined according to the recording direction information; and according to the determined recording direction, at least three microphones of the mobile terminal are controlled to carry out recording, and a recording file is generated. According to the technical scheme of the invention, when the position of a target sound source changes or the target sound source changes, the user can input the recording direction information of the expected recording direction in the mobile phone needless of changing the position or orientation of the mobile terminal, and directed recording is realized.
Description
Technical field
The embodiment of the present invention relates to recording technology field, and the orientation recording that relates in particular to a kind of mobile terminal is controlledMethod and device.
Background technology
In order to meet the recording demand of user in life and work, most mobile terminals all possess recording meritCan, as the recording pen of mobile phone, panel computer, music player and specialty etc.
User is in the time using the sound-recording function of mobile terminal, and playback environ-ment tends to exist multiple personages to speakSound and various environmental noise, so for the microphone for realizing sound-recording function, its surrounding is depositedAt multi-acoustical, microphone can all be recorded formation recording file by the sound of these sound sources. But, useThe sound that often only has a sound source in direction that family is interested, is listening to the sound that comprises institute's sound sourceRecording file time, can cannot not hear due to the interference of the sound of other sound sources own interested sound.
In order to make the sound of the sound source interested in recording file clearer, user often needs mobile terminalIn microphone point to sound source interested, and when the position of sound source interested constantly changes, or user feels emergingWhen the sound source of interest frequently becomes another one sound source from a sound source, user just need to ceaselessly change eventually mobileThe position of end, makes troubles to user.
Summary of the invention
The object of the embodiment of the present invention is to provide a kind of directed recording control method and device of mobile terminal, withSolve in existing record type, mobile terminal cannot be realized in fixed position in the variation according to target sound sourceThe problem of directed recording.
On the one hand, the embodiment of the present invention provides a kind of directed recording control method of mobile terminal, comprising:
While monitoring recording direction selection event, obtain the recording direction information of user's input;
Determine recording direction according to described recording direction information;
According at least three microphone locations on determined recording direction control mobile terminal, and generate recordSound file.
On the other hand, the embodiment of the present invention provides a kind of orientation recording control device of mobile terminal, comprising:
Recording direction acquisition of information module, in the time monitoring recording direction selection event, obtains user defeatedThe recording direction information entering;
Recording direction determination module, for determining recording direction according to described recording direction information;
Recording file generation module, for according at least three on determined recording direction control mobile terminalIndividual microphone location, and generate recording file.
The orientation recording control program of the mobile terminal providing in the embodiment of the present invention, monitors recording direction choosingWhile selecting event, obtain the recording direction information of user's input, determine recording direction according to recording direction information,According at least three microphone locations on determined recording direction control mobile terminal, and generate recording literary compositionPart. By adopting technique scheme, when the position of target sound source changes, or target sound source occursWhen change, user without change mobile terminal position or towards, just can by mobile terminal input fromThe recording direction information of the recording direction of oneself anticipation, realizes the orientation recording to this recording direction.
Brief description of the drawings
The flow process of the directed recording control method of a kind of mobile terminal that Fig. 1 provides for the embodiment of the present invention one is shownIntention;
The flow process of the directed recording control method of a kind of mobile terminal that Fig. 2 provides for the embodiment of the present invention two is shownIntention;
Fig. 3 chooses interface schematic diagram for the first recording direction that the embodiment of the present invention two provides;
Fig. 4 chooses interface schematic diagram for the second recording direction that the embodiment of the present invention two provides;
The flow process of the directed recording control method of a kind of mobile terminal that Fig. 5 provides for the embodiment of the present invention three is shownIntention;
The flow process of the directed recording control method of a kind of mobile terminal that Fig. 6 provides for the embodiment of the present invention four is shownIntention;
The structural frames of the orientation recording control device of a kind of mobile terminal that Fig. 7 provides for the embodiment of the present invention fiveFigure.
Detailed description of the invention
Further illustrate technical scheme of the present invention below in conjunction with accompanying drawing and by detailed description of the invention. CanUnderstand, specific embodiment described herein is only for explaining the present invention, but not to limit of the present inventionFixed. It also should be noted that, for convenience of description, in accompanying drawing, only show portion related to the present inventionDivide but not entire infrastructure.
Before in further detail exemplary embodiment being discussed, it should be mentioned that some exemplary embodiment quiltsBe described as processing or the method described as flow chart. Although flow chart is described as each step the processing of order,But many steps wherein can be implemented concurrently, concomitantly or simultaneously. In addition, each step is suitableOrder can be rearranged. Described in the time that its operation completes, process and can be terminated, but can also have notComprise additional step in the accompanying drawings. Described processing can corresponding to method, function, code, subroutine,Subprogram etc.
Embodiment mono-
The flow process of the directed recording control method of a kind of mobile terminal that Fig. 1 provides for the embodiment of the present invention one is shownIntention, the method can be carried out by the orientation recording control device of mobile terminal, and wherein this device can be by softwareAnd/or hardware realization, generally can be integrated in mobile terminal. As shown in Figure 1, the method comprises:
Step 101, monitor recording direction and select when event, to obtain the recording direction information of user's input.
Exemplary, the mobile terminal in the present embodiment specifically can be mobile phone, panel computer and recording pen etc. eventuallyEnd equipment. In described mobile terminal, dispose at least three microphones.
Exemplary, monitor recording direction and select event specifically can refer to that user's operating mobile terminal enters recordingAfter function, the button of triggering selection recording direction; Or user's operating mobile terminal enters after sound-recording function,Acquiescence enters recording direction and chooses interface etc.
Exemplary, the recording direction information of user's input can be specifically to certain representative recording according to userThe recording direction information that the triggering of the icon of direction generates; Also can be that user directly inputs by keyboardAnd the angle between reference direction, as 30 degree or-30 degree etc.
Step 102, determine recording direction according to recording direction information.
Step 103, according at least three microphone locations on determined recording direction control mobile terminal,And generate recording file.
Exemplary, can be in mobile terminal recording parameter corresponding to pre-stored each recording direction, according toDetermined recording direction is chosen corresponding recording parameter, and according on recording parameter control mobile terminal extremelyFew three microphones are realized directed recording.
The directed recording control method of the mobile terminal that the embodiment of the present invention one provides, monitors recording direction choosingWhile selecting event, obtain the recording direction information of user's input, determine recording direction according to recording direction information,According at least three microphone locations on determined recording direction control mobile terminal, and generate recording literary compositionPart. By adopting technique scheme, when the position of target sound source changes, or target sound source occursWhen change, user without change mobile terminal position or towards, just can by mobile terminal input fromThe recording direction information of the recording direction of oneself anticipation, realizes the orientation recording to this recording direction.
Embodiment bis-
The flow process of the directed recording control method of a kind of mobile terminal that Fig. 2 provides for the embodiment of the present invention two is shownIntention, the present embodiment is optimized as basis taking above-described embodiment, in the present embodiment, by step " monitoringWhile selecting event to recording direction, obtain the recording direction information of user's input " be optimized for: monitor recordingWhen set direction event, demonstration recording direction is chosen interface, and wherein, recording direction is chosen interface and comprised defaultThe direction icon of number, the direction icon of preset number forms a circumference; Select at recording direction according to userGet on interface, the trigger action of direction icon is generated to recording direction information.
Accordingly, the method for the present embodiment comprises the steps:
Step 201, monitor recording direction and select when event, show that recording direction chooses interface.
Wherein, described recording direction is chosen the direction icon that interface comprises preset number, described preset numberDirection icon forms a circumference.
Concrete, described preset number can be adjusted according to actual conditions, for example, and when what orientation was recordedWhen directional precision is had relatively high expectations, can suitably increase directional diagram target number; When the directional precision to orientation recordingRequire when lower, can suitably reduce directional diagram target number.
Step 202, choose on interface at described recording direction according to user, raw to the trigger action of direction iconBecome recording direction information.
Exemplary, this step specifically can be: choose on interface at recording direction according to user, to directional diagramTarget touches operation and generates recording direction information; Or, choose on interface at recording direction according to user, pass throughThe pointer dragging in circumference generates recording direction information to the point operation of direction icon.
Fig. 3 chooses interface schematic diagram for the first recording direction that the embodiment of the present invention two provides, as Fig. 3 instituteShow, recording direction is chosen on interface and is comprised 12 circular direction icons, and each direction icon represents a recordSound direction. Direction icon can be designed to the form of virtual push button, when user touches one of them directional diagramTimestamp, can be considered that it is the recording direction that user chooses that user selects the recording direction of this direction icon representative,Choose on interface at recording direction according to user, the touch operation of direction icon is generated to recording direction information.Preferably, for the convenience of the attractive in appearance of operation interface and operation, the circumference forming at 12 direction iconsIn, be also provided with recording beginning/pause button (as the triangle icon in figure).
Fig. 4 chooses interface schematic diagram for the second recording direction that the embodiment of the present invention two provides, as Fig. 4 instituteShow, recording direction is chosen and on interface, is comprised 12 direction icons that approach trapezoidal shape, each direction icon generationTable one recording direction. In the circumference forming at 12 direction icons, be also provided with pointer, when user passes throughDrag one of them directional diagram timestamp of this pointed, can be considered that user selects the recording of this direction icon representativeDirection is the recording direction that user chooses, and chooses on interface at recording direction according to user, by dragging circlePointer in week generates recording direction information to the point operation of direction icon.
Below only provide two kinds of recording directions to choose interface and schematically illustrated, wherein, directional diagram target is concreteNumber, shape, existence form and triggering mode etc. are all not construed as limiting, and those skilled in the art can be according to realityBorder situation designs.
Step 203, determine recording direction according to recording direction information.
Step 204, according at least three microphone locations on determined recording direction control mobile terminal,And generate recording file.
The directed recording control method of a kind of mobile terminal that the present embodiment two provides, monitors recording direction choosingWhile selecting event, demonstration recording direction is chosen interface, and chooses on interface the other side at recording direction according to userTrigger action to icon generates recording direction information, makes user can select easily recording direction, increasesPlayability, promotes user and experiences.
Embodiment tri-
The flow process of the directed recording control method of a kind of mobile terminal that Fig. 5 provides for the embodiment of the present invention three is shownIntention, the present embodiment is optimized as basis taking above-described embodiment, in the present embodiment, by step " according toAt least three microphone locations on determined recording direction control mobile terminal, and generate recording file "Be optimized for: obtain recorded audio signals by least three microphones on mobile terminal; According to determined recordingDirection is obtained corresponding default recording parameter; Determine in recorded audio signals according to obtained default recording parameterTarget recorded audio signals; Target recorded audio signals is processed, and generated recording file.
Further, target recorded audio signals is processed, and generated recording file, can comprise: promote orderThe gain of mark recorded audio signals, obtains the first recorded audio signals; Reduce in recorded audio signals except target recorded audio signalsThe gain of other recorded audio signals, obtain the second recorded audio signals; According to the first recorded audio signals and the second recording letterNumber generate recording file.
Accordingly, the method for the present embodiment comprises the steps:
Step 501, monitor recording direction and select when event, show that recording direction chooses interface.
Wherein, described recording direction is chosen the direction icon that interface comprises preset number, described preset numberDirection icon forms a circumference.
Step 502, choose on interface at recording direction according to user, the trigger action of direction icon is generated to recordSound directional information.
Step 503, determine recording direction according to recording direction information.
Step 504, obtain recorded audio signals by least three microphones on mobile terminal.
Exemplary, when operating and determined after recording direction according to user, while starting to record, can automatically openAll or part of microphone (the unlatching quantity of microphone is no less than three) in mobile terminal, and control and openThe microphone location opening, obtains the recorded audio signals of at least three microphones in opened microphone. For example,In mobile terminal, dispose 6 microphones, can automatically open 5 microphones wherein, and control these 5Microphone starts recording, obtains the recorded audio signals of 4 microphones wherein; And for example, in mobile terminal, configureHave 3 microphones, can automatically open this 3 microphones, and control these 3 microphones start recording, obtainGet the recorded audio signals of these 3 microphones.
Step 505, obtain corresponding default recording parameter according to determined recording direction.
Exemplary, the recording direction correspondence that can store in advance each direction icon representative in mobile terminalDefault recording parameter, this default recording parameter specifically can be by the row of recording direction and at least three microphonesMode for cloth is determined. The arrangement mode of microphone has directly determined the position of each microphone on mobile terminal,And relative position relation between every two microphones. For sound source in a direction, it sendsSound arrives the time of each microphone and can distinguish to some extent, and the intensity of the voice signal that microphone collects alsoDifferent. In the time that the air line distance of sound source and microphone is relatively near, sound arrives time of this microphone can phaseTo early, the intensity of voice signal is also relatively strong; In the time that the air line distance of sound source and microphone is relatively far away,Sound arrive time of this microphone can be relatively evening, the intensity of voice signal also relatively a little less than. Can be according to upperState principle the default recording parameter that recording direction is corresponding is set, in default recording parameter, comprise from all recording lettersIn number, pick out the screening conditions of the target recorded audio signals that determined recording direction is corresponding. When recording direction quiltAfter determining, the recording direction after can determining according to this is directly transferred corresponding default recording ginseng from mobile terminalNumber.
Step 506, determine the target recorded audio signals in recorded audio signals according to obtained default recording parameter.
Exemplary, can from recorded audio signals, filter out order according to the screening conditions that comprise in default recording parameterMark recorded audio signals.
The gain of step 507, lifting target recorded audio signals, obtains the first recorded audio signals.
The gain of other recorded audio signals in step 508, reduction recorded audio signals except target recorded audio signals,To the second recorded audio signals.
Step 509, generate recording file according to the first recorded audio signals and the second recorded audio signals.
It should be noted that, step 507-step 509 provides a kind of and preferably target recorded audio signals has been carried outProcess, and generate the mode of recording file, it will be appreciated by persons skilled in the art that and can also have itHis processing mode. For example, can retain target recorded audio signals, remove except target recorded audio signalsOther recorded audio signals, and generate recording file, do like this other records that can remove except default recording directionThe sound of sound source in sound direction, the uninterested sound of user that has been equivalent to filtering, can ensure that user canHear clearly own interested sound; And for example, can retain target recorded audio signals, and promote orderThe gain of mark recorded audio signals, removes other recorded audio signals except target recorded audio signals, and generates recording literary compositionPart, the benefit of doing is like this, can improve the attribute such as intensity of sound and loudness of sound in recording file,Further facilitate user and do not hear own interested sound. And the processing mode that step 507-step 509 provides,Gain promotes or the amplitude of reduction can be arranged by system default, also can be arranged voluntarily by user. For example, can establishPut Lifting Coefficients and reduce coefficient, regulate by the cooperation to two coefficients, can realize as the case may be and protectingStay the proportion of the sound on other recording directions except default recording direction, and then avoid some distorted soundsThe generation of sound.
The embodiment of the present invention three, on the basis of above-described embodiment, is entered according to recording direction controlling mobile terminalThe step of row recording is optimized. First obtain recorded audio signals, the more default recording corresponding according to recording directionParameter is determined target recorded audio signals from the recorded audio signals obtaining, after target recorded audio signals is processed, rawBecome recording file. Realize the orientation recording on the recording direction that user chooses, user generated listening toRecording file time, can clearly hear and promote the sound of the sound source on default recording direction user and experience.
Embodiment tetra-
The flow process of the directed recording control method of a kind of mobile terminal that Fig. 6 provides for the embodiment of the present invention four is shownIntention, the present embodiment is optimized as basis taking above-described embodiment, in the present embodiment, in step " monitoringSelect event to recording direction " before, increase step: by least three microphones on mobile terminalObtain the recorded audio signals of stationary sound source; Respectively to corresponding the fixing of the each microphone at least three microphonesThe recorded audio signals of sound source carries out Fourier transform, obtains corresponding frequency spectrum data; Calculate at least three microphonesIn frequency spectrum data corresponding to every two microphones in the difference of corresponding amplitude and/or phase place poor; According to amplitudeDifference and/or phase place poor, generate default recording parameter corresponding to the current place of stationary sound source recording direction. AndAnd, step " is obtained to corresponding default recording parameter according to determined recording direction " and be optimized for: according toDetermined recording direction, from all default recording parameter of above-mentioned generation, obtains and determined recording sideTo corresponding default recording parameter.
Accordingly, the method for the present embodiment comprises the steps:
Step 601, obtain the recorded audio signals of stationary sound source by least three microphones on mobile terminal.
Exemplary, after the arrangement mode of at least three microphones on mobile terminal is determined, can be in recordIn a direction with respect to mobile terminal in sound environment, place a stationary sound source, and do not have in other directionsSound source, obtains the recorded audio signals of stationary sound source by least three microphones on mobile terminal. For example,As shown in Figure 3, can the center of circle of circumference and 1 o'clock direction direction icon between place one in line directionIndividual stationary sound source, and there is no sound source in other directions.
It should be noted that, can in mobile terminal, only configure three microphones, can change so existingThe hardware configuration of mobile terminal, also can simplify default recording parameter, and improving operational speed makes the user can be moreInterested sound in the directed recording file of fast uppick, promotes user and experiences.
Step 602, the recording letter to stationary sound source corresponding to the each microphone at least three microphones respectivelyNumber carry out Fourier transform, obtain corresponding frequency spectrum data.
Step 603, calculate in the frequency spectrum data that every two microphones at least three microphones are corresponding correspondingThe difference of amplitude and/or phase place poor.
Step 604, poor according to the difference of amplitude and/or phase place, generate the current place of stationary sound source recording directionCorresponding default recording parameter.
Preferably, in order to ensure the accuracy of default recording parameter, can be along on the recording direction of stationary sound source placeMobile stationary sound source, in the frequency spectrum data that every two microphones at least three microphones of calculating are corresponding againThe difference of corresponding amplitude and/or phase place poor. By that analogy, can obtain every two at least three microphonesThe corresponding difference of amplitude and/or rule or the scope of living in of the difference of phase place in frequency spectrum data corresponding to microphone,Generate stationary sound source current place recording according to the rule of the difference of the difference of this amplitude and/or phase place or scope of living inThe default recording parameter that direction is corresponding.
Preferably, in default recording parameter, can comprise the poor of the difference of amplitude and phase place simultaneously.
Step 605, monitor recording direction and select when event, show that recording direction chooses interface.
Step 606, choose on interface at recording direction according to user, the trigger action of direction icon is generated to recordSound directional information.
Step 607, determine recording direction according to recording direction information.
Step 608, obtain recorded audio signals by least three microphones on mobile terminal.
Step 609, according to determined recording direction from all default recording parameter of above-mentioned generation, obtainThe default recording parameter corresponding with determined recording direction.
Step 610, determine the target recorded audio signals in recorded audio signals according to obtained default recording parameter.
Concrete, this step can comprise: respectively to record corresponding to each microphone at least three microphonesTone signal is carried out Fourier transform, obtains corresponding frequency spectrum data; For each frequency, calculate at least threeIn frequency spectrum data corresponding to every two microphones in microphone, the difference of corresponding amplitude and/or phase place is poor; SentenceThe disconnected difference of amplitude of calculating and/or the difference of phase place whether with obtained default recording parameter in the amplitude that comprisesDifference and/or the difference of phase place match, if so, determine that the corresponding recorded audio signals of current frequency is target recordTone signal.
Exemplary, it is for the sound of different frequency is separated that recorded audio signals is carried out to Fourier transform,In the frequency spectrum data obtaining, the frequency spectrum data of the respectively corresponding sound source of each different frequency.
Exemplary, when in default recording parameter, comprise difference in magnitude simultaneously with phase place poor time, can be according to realityBorder situation arranges matching condition. For example, when higher to orientation recording performance requirement, can be by bothThe difference of the joining amplitude again recorded audio signals corresponding to frequency of the difference of matched-phase is defined as target recorded audio signals; When rightWhen directed recording performance requirement is lower, can be by the record corresponding to frequency of the coupling difference of amplitude or the difference of matched-phaseTone signal is all defined as target recorded audio signals.
Step 611, target recorded audio signals is processed, and generated recording file.
The embodiment of the present invention four, on the basis of above-described embodiment, has increased and has generated the relevant of default recording parameterStep, then according to determined recording direction from generate all default recording parameter, obtain with determineThe corresponding default recording parameter of recording direction, and filter out target record according to the default recording parameter obtainingTone signal, finally processes and generates recording file target recorded audio signals. Wherein, in default recording parameterThe difference that comprises amplitude and/or phase place poor, determines order according to the match condition of the difference of the difference to amplitude and/or phase placeMark recorded audio signals, can improve the degree of accuracy of screening target recorded audio signals, thereby realizes more directed recordSound, promotes user and experiences.
Embodiment five
The structural frames of the orientation recording control device of a kind of mobile terminal that Fig. 7 provides for the embodiment of the present invention fiveFigure, this device can be realized by software and/or hardware, is generally integrated in mobile terminal, can move by executionThe directed recording control method of terminal is controlled the orientation recording of mobile terminal. As shown in Figure 7, shouldDevice comprises: recording direction acquisition of information module 701, recording direction determination module 702 and recording file generateModule 703.
Wherein, recording direction acquisition of information module 701, in the time monitoring recording direction selection event, obtainsTake the recording direction information of family input; Recording direction determination module 702, for believing according to described recording directionBreath is determined recording direction; Recording file generation module 703, for moving according to determined recording direction controlAt least three microphone locations in terminal, and generate recording file.
The orientation recording control device of the mobile terminal that the embodiment of the present invention five provides, recording direction acquisition of informationModule 701, in the time monitoring recording direction selection event, is obtained the recording direction information of user's input, recordingOrientation determination module 702 is determined recording direction according to recording direction information, 703 of recording file generation modulesAccording at least three microphone locations on determined recording direction control mobile terminal, and generate recording file.By adopting technique scheme, when the position of target sound source changes, or target sound source changesTime, user without change the position of mobile terminal or towards, just can be own pre-by input on mobile terminalThe recording direction information of the recording direction of thinking, realizes the orientation recording to this recording direction.
On the basis of above-described embodiment, described recording direction acquisition of information module can comprise chooses interface displayUnit and recording direction information generating unit. Wherein, choose interface display unit, for monitoring recordingWhen set direction event, demonstration recording direction is chosen interface, and wherein, described recording direction is chosen interface and comprisedThe direction icon of preset number, the direction icon of described preset number forms a circumference; Recording direction informationGeneration unit, for choosing interface according to user at described recording direction, to the trigger action of direction iconGenerate recording direction information.
On the basis of above-described embodiment, described recording direction information generating unit specifically can be used for: according to useFamily is chosen on interface at described recording direction, and the touch operation of direction icon is generated to recording direction information; Or,Choose on interface at described recording direction according to user, by dragging pointer in described circumference to direction iconPoint operation generate recording direction information.
On the basis of above-described embodiment, described recording file generation module can comprise recorded audio signals acquiring unit,Default recording parameter acquiring unit, target recorded audio signals determining unit and recording file generation unit. Wherein,Recorded audio signals acquiring unit, for obtaining recorded audio signals by least three microphones on mobile terminal; In advanceIf recording parameter acquiring unit, for obtaining corresponding default recording parameter according to determined recording direction;Target recorded audio signals determining unit, for determining described recorded audio signals according to obtained default recording parameterTarget recorded audio signals; Recording file generation unit, for described target recorded audio signals is processed, andGenerate recording file.
On the basis of above-described embodiment, described recording file generation unit specifically can be used for: promote described orderThe gain of mark recorded audio signals, obtains the first recorded audio signals; Reduce in described recorded audio signals except described target recordingThe gain of other recorded audio signals beyond signal, obtains the second recorded audio signals; According to described the first recorded audio signalsGenerate recording file with described the second recorded audio signals.
On the basis of above-described embodiment, this device also can comprise target sound source recorded audio signals acquisition module, changeDie change piece, computing module and default recording parameter generation module. Wherein, target sound source recorded audio signals obtains mouldPiece, for before monitoring recording direction selection event, by least three microphones on mobile terminalObtain the recorded audio signals of stationary sound source; Conversion module, for every to described at least three microphones respectivelyThe recorded audio signals of the stationary sound source that individual microphone is corresponding carries out Fourier transform, obtains corresponding frequency spectrum data;Computing module, in frequency spectrum data corresponding to every two microphones of at least three microphones described in calculatingThe difference of corresponding amplitude and/or phase place poor; Default recording parameter generation module, for according to described amplitudePoor and/or described phase place poor, generates the default recording ginseng that the current place of described stationary sound source recording direction is correspondingNumber. Described default recording parameter acquiring unit, specifically can be used for: according to determined recording direction from describedIn all default recording parameter that default recording parameter generation module generates, obtain and determined recording directionCorresponding default recording parameter.
On the basis of above-described embodiment, described target recorded audio signals determining unit, specifically can be used for: respectivelyThe recorded audio signals corresponding to the each microphone in described at least three microphones carries out Fourier transform, obtainsCorresponding frequency spectrum data; For each frequency, every two microphones described in calculating at least three microphonesIn corresponding frequency spectrum data, the difference of corresponding amplitude and/or phase place is poor; The difference of the amplitude calculated of judgement and/orThe difference of phase place whether with obtained default recording parameter in the difference of the amplitude that comprises and/or phase place poor mutuallyJoin, if so, determine that the corresponding recorded audio signals of current frequency is target recorded audio signals.
The orientation recording control device of the mobile terminal providing in above-described embodiment can be carried out the present invention and implement arbitrarilyThe directed recording control method of the mobile terminal that provides of example, possess the corresponding functional module of the method for execution andBeneficial effect. The not ins and outs of detailed description in the above-described embodiments, can be referring to any embodiment of the present inventionThe directed recording control method of the mobile terminal providing.
Note, above are only preferred embodiment of the present invention and institute's application technology principle. Those skilled in the artWill appreciate that, the invention is not restricted to specific embodiment described here, can enter for a person skilled in the artThe various obvious variations of row, readjust and substitute and can not depart from protection scope of the present invention. Therefore, thoughSo by above embodiment, the present invention is described in further detail, but the present invention be not limited only toUpper embodiment, in the situation that not departing from the present invention's design, can also comprise more other equivalent embodiment,And scope of the present invention is determined by appended claim scope.
Claims (14)
1. a directed recording control method for mobile terminal, is characterized in that, comprising:
While monitoring recording direction selection event, obtain the recording direction information of user's input;
Determine recording direction according to described recording direction information;
According at least three microphone locations on determined recording direction control mobile terminal, and generate recordSound file.
2. method according to claim 1, is characterized in that, while monitoring recording direction selection event,The recording direction information of obtaining user's input, comprising:
While monitoring recording direction selection event, demonstration recording direction is chosen interface, wherein, and described recording sideTo the direction icon of choosing interface and comprise preset number, the direction icon of described preset number forms a circumference;
Choose on interface at described recording direction according to user, the trigger action of direction icon is generated to recording sideTo information.
3. method according to claim 2, is characterized in that, selects at described recording direction according to userGet on interface, the trigger action of direction icon generated to recording direction information, comprising:
Choose on interface at described recording direction according to user, the touch operation of direction icon is generated to recording sideTo information; Or,
Choose on interface at described recording direction according to user, by dragging pointer in described circumference to directionThe point operation of icon generates recording direction information.
4. according to the method described in any one in claim 1-3, it is characterized in that, according to determined recordAt least three microphone locations on sound direction control mobile terminal, and generate recording file, comprising:
Obtain recorded audio signals by least three microphones on mobile terminal;
Obtain corresponding default recording parameter according to determined recording direction;
Determine the target recorded audio signals in described recorded audio signals according to obtained default recording parameter;
Described target recorded audio signals is processed, and generated recording file.
5. method according to claim 4, is characterized in that, to described target recorded audio signals placeReason, and generate recording file, comprising:
Promote the gain of described target recorded audio signals, obtain the first recorded audio signals;
Reduce the gain of other recorded audio signals except described target recorded audio signals in described recorded audio signals,To the second recorded audio signals;
Generate recording file according to described the first recorded audio signals and described the second recorded audio signals.
6. method according to claim 4, is characterized in that, is monitoring recording direction selection eventBefore, also comprise:
Obtain the recorded audio signals of stationary sound source by least three microphones on mobile terminal;
Respectively the recorded audio signals of stationary sound source corresponding to the each microphone in described at least three microphones is enteredRow Fourier transform, obtains corresponding frequency spectrum data;
Corresponding amplitude in frequency spectrum data corresponding to every two microphones described in calculating at least three microphonesDifference and/or phase place poor;
Poor according to the difference of described amplitude and/or described phase place, generates the current place of described stationary sound source recording sideTo the default recording parameter of correspondence;
Describedly obtain corresponding default recording parameter according to determined recording direction, comprising:
According to determined recording direction from all default recording parameter of above-mentioned generation, obtain with determineThe corresponding default recording parameter of recording direction.
7. method according to claim 6, is characterized in that, described according to obtained default recordingParameter is determined the target recorded audio signals in described recorded audio signals, comprising:
Respectively recorded audio signals corresponding to the each microphone in described at least three microphones carried out to Fourier changeChange, obtain corresponding frequency spectrum data;
For each frequency, every two spectrum numbers that microphone is corresponding described in calculating at least three microphonesPoor according to the difference of the amplitude of middle correspondence and/or phase place;
With obtained default recording parameter whether the difference of amplitude calculated of judgement and/or the difference of phase place wrapThe difference of the amplitude containing and/or the difference of phase place match, and if so, determine the corresponding recorded audio signals of current frequencyFor target recorded audio signals.
8. the orientation of a mobile terminal recording control device, is characterized in that, comprising:
Recording direction acquisition of information module, in the time monitoring recording direction selection event, obtains user defeatedThe recording direction information entering;
Recording direction determination module, for determining recording direction according to described recording direction information;
Recording file generation module, for according at least three on determined recording direction control mobile terminalIndividual microphone location, and generate recording file.
9. device according to claim 8, is characterized in that, described recording direction acquisition of information moduleComprise:
Choose interface display unit, in the time monitoring recording direction selection event, show recording direction choosingGet interface, wherein, described recording direction is chosen the direction icon that interface comprises preset number, described present countDestination party forms a circumference to icon;
Recording direction information generating unit, for choosing interface according to user at described recording direction, the other sideTrigger action to icon generates recording direction information.
10. device according to claim 9, is characterized in that, described recording direction Information generation listUnit specifically for:
Choose on interface at described recording direction according to user, the touch operation of direction icon is generated to recording sideTo information; Or,
Choose on interface at described recording direction according to user, by dragging pointer in described circumference to directionThe point operation of icon generates recording direction information.
Device in 11. according to Claim 8-10 described in any one, is characterized in that, described recording fileGeneration module comprises:
Recorded audio signals acquiring unit, for obtaining recorded audio signals by least three microphones on mobile terminal;
Default recording parameter acquiring unit, for obtaining corresponding default recording according to determined recording directionParameter;
Target recorded audio signals determining unit, for determining described recording letter according to obtained default recording parameterTarget recorded audio signals in number;
Recording file generation unit, for described target recorded audio signals is processed, and generates recording file.
12. devices according to claim 11, is characterized in that, described recording file generation unit toolBody is used for:
Promote the gain of described target recorded audio signals, obtain the first recorded audio signals;
Reduce the gain of other recorded audio signals except described target recorded audio signals in described recorded audio signals,To the second recorded audio signals;
Generate recording file according to described the first recorded audio signals and described the second recorded audio signals.
13. devices according to claim 11, is characterized in that, also comprise:
Target sound source recorded audio signals acquisition module, for before monitoring recording direction selection event, passes throughAt least three microphones on mobile terminal obtain the recorded audio signals of stationary sound source;
Conversion module, for corresponding to each microphone of described at least three microphones respectively fixed soundThe recorded audio signals in source carries out Fourier transform, obtains corresponding frequency spectrum data;
Computing module, for every two spectrum numbers that microphone is corresponding of at least three microphones described in calculatingPoor according to the difference of the amplitude of middle correspondence and/or phase place;
Default recording parameter generation module, poor for according to the difference of described amplitude and/or described phase place, generatesDefault recording parameter corresponding to the current place of described stationary sound source recording direction;
Described default recording parameter acquiring unit, specifically for:
The all default recording generating from described default recording parameter generation module according to determined recording directionIn parameter, obtain the default recording parameter corresponding with determined recording direction.
14. devices according to claim 13, is characterized in that, described target recorded audio signals is determined singleUnit, specifically for:
Respectively recorded audio signals corresponding to the each microphone in described at least three microphones carried out to Fourier changeChange, obtain corresponding frequency spectrum data;
For each frequency, every two spectrum numbers that microphone is corresponding described in calculating at least three microphonesPoor according to the difference of the amplitude of middle correspondence and/or phase place;
With obtained default recording parameter whether the difference of amplitude calculated of judgement and/or the difference of phase place wrapThe difference of the amplitude containing and/or the difference of phase place match, and if so, determine the corresponding recorded audio signals of current frequencyFor target recorded audio signals.
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