CN105592198A - Multi-MIC terminal, MIC setting method and sound quality improvement method - Google Patents
Multi-MIC terminal, MIC setting method and sound quality improvement method Download PDFInfo
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- CN105592198A CN105592198A CN201410557502.4A CN201410557502A CN105592198A CN 105592198 A CN105592198 A CN 105592198A CN 201410557502 A CN201410557502 A CN 201410557502A CN 105592198 A CN105592198 A CN 105592198A
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- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Speech or voice signal processing techniques 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
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Abstract
The invention discloses a multi-MIC terminal, an MIC setting method and a sound quality improvement method. When MICs for a terminal are set, the MIC nearest to a terminal user in the MICs is set to be the main MIC, and the other MICs are set to be subsidiary MICs. Thus, the MIC nearest to the terminal user in different using modes (such as a receiver mode and a hands-free mode) can be constantly ensured to be the main MIC, the MIC can meet requirements of a noise reduction algorism more easily, that is, setting of the main MIC and the subsidiary MICs is correspondingly and dynamically adjusted along with the change of a relative position between the terminal user and the terminal, the noise reduction performance can be always kept in a good state, and thus, the sound quality of the terminal and the satisfaction degree of the user experience can be enhanced.
Description
Technical field
The present invention relates to the communications field, be specifically related to a kind of many MIC terminal and MIC method to set up and tonequalityMethod for improving.
Background technology
Now, the application of various mobile terminals is very extensive, and popularity is very high. Voice call isA basic function of mobile terminal, the lifting of voice call tonequality is that all mobile terminals are all devoted to effortThe problem of research. Due to uncertainty and the complexity of call environment, environmental noise is to affect call voice soundA key factor of matter, therefore the anti-acoustic capability of mobile terminal becomes Ge great operator judge pass of mobile phoneHow key index, eliminate or reduce that environmental noise also becomes each chip manufacturer and manufacturer terminal endeavours to study oneEmphasis problem.
For mobile terminal, noise reduction algorithm develops into two MIC noise reductions from single MIC noise reduction in the past,Even microphone array algorithm. On mobile terminal, the quantity of MIC is also developed into ready-made present already by single MICGeneral two MIC, have been 3MIC or 4MIC layout on the mobile terminal even having, and these new technologies allPromoting the development of mobile terminal noise reduction technology and the lifting of performance. In current noise reduction algorithm, in order to reachTo optimum anti-acoustic capability, for many MIC mobile terminal, require the signal to noise ratio of main MIC than the letter of secondary MICMake an uproar than large 6dB. Typical two MIC layout type shown in Figure 1, are fixedly installed terminal bottom at presentMIC1 be main MIC, the MIC2 on top is secondary MIC. Due to the sounding spy of traditional receiver (Receiver)Point, terminal use is in the time using handset mode call, and main MIC, than the more close mouth of secondary MIC, is therefore easy toMeet noise reduction algorithm requirement. If but terminal use is while using hands-free mode to converse, when people and terminalWhen relative position is different, the signal to noise ratio of major and minor MIC can change, and makes the signal to noise ratio of major and minor MICDifference cannot meet noise reduction algorithm requirement, thereby causes noise reduction algorithm to lose efficacy, and the anti-acoustic capability of call is sharply dislikedChange. Therefore need a kind of method to carry out this variation of identification, ensure the anti-acoustic capability of voice call, thereby promoteUser's experience effect, increases the competitiveness of product in market.
Summary of the invention
The main technical problem to be solved in the present invention is that a kind of many MIC terminal and MIC method to set up thereof are providedWith tonequality method for improving, the major and minor MIC that solves existing many MIC terminal is fixedly installed and causes anti-acoustic capability poorProblem.
For solving the problems of the technologies described above, the invention provides a kind of MIC method to set up of many MIC terminal, comprising:
Determine the nearest MIC of distance terminal use in each MIC of described terminal;
The nearest MIC of the described terminal use of this distance is set to main MIC, and other MIC is set to secondary MIC.
In an embodiment of the present invention, determine distance in each MIC of described terminal by ultrasonic measurementThe MIC that terminal use is nearest.
In an embodiment of the present invention, determine distance in each MIC of described terminal by ultrasonic measurementThe nearest MIC of terminal use comprises:
For described terminal arranges a ultrasonic wave transmitter module, and can characterize each for each MIC arranges respectively oneThe ultrasonic wave receiver module of MIC position;
Described ultrasonic wave transmitter module emission measurement ultrasonic wave, described each ultrasonic wave receiver module receives and runs into instituteState the measurement ultrasonic wave that terminal use reflects;
To receive at first the corresponding MIC of the hyperacoustic ultrasonic wave receiver module of described measurement and be defined as distanceThe MIC that terminal use is nearest, or calculate each ultrasonic wave receiver module apart from described end according to following computing formulaThe distance of end subscriber, is defined as minimum MIC corresponding to ultrasonic wave receiver module of distance apart from terminal useNearest MIC:
Si＝(ti-t0)*C-S0
Described Si is the distance of i ultrasonic wave receiver module apart from terminal use, and described i is more than or equal to 1,Be less than or equal to the MIC sum N of described terminal; Described ti is described in i ultrasonic wave receiver module receivesMeasure hyperacoustic time; Described t0 is hyperacoustic time of described ultrasonic wave transmitter module emission measurement; InstituteStating C is the hyperacoustic transmission speed of described measurement; Described S0 is described end of described ultrasonic wave transmitter module distanceThe distance of end subscriber.
In an embodiment of the present invention, described each ultrasonic wave receiver module is integrated is respectively arranged on each correspondenceMIC on.
In an embodiment of the present invention, described ultrasonic wave transmitter module is integrated is arranged on raising of described terminalOn sound device.
In an embodiment of the present invention, when determining that each MIC of described terminal is apart from terminal use's distanceWhen identical, keep former MIC arrange or each MIC is set to main MIC; When determining each MIC of described terminalIn, have M MIC identical apart from terminal use's distance, and this M MIC is the described terminal use of distanceWhen nearest MIC, from a described M MIC, select one as main MIC; Described M is more than or equal to 2, littleIn the MIC of described terminal sum N.
In order to address the above problem, the present invention also provides a kind of tonequality method for improving of many MIC terminal, instituteThe method of stating comprises:
Set the major and minor MIC of described terminal by the MIC method to set up of many MIC terminal as aboveAfter, determine corresponding noise reduction algorithm according to new major and minor MIC, and carry out noise reduction according to this noise reduction algorithmProcess.
In an embodiment of the present invention, in the each MIC that determines described terminal, distance terminal use is nearestMIC before, also comprise and judge whether described terminal has opened hands-free mode, in this way, then carry out determine instituteState the step of the nearest MIC of distance terminal use in each MIC of terminal.
In order to address the above problem, the present invention also provides a kind of many MIC terminal, comprises processor and multipleMIC, described processor is for determining the nearest MIC of described multiple MIC distance terminal use, by this distanceThe nearest MIC of described terminal use is set to main MIC, and other MIC is set to secondary MIC.
In an embodiment of the present invention, described processor is determined the each of described terminal by ultrasonic measurementThe nearest MIC of distance terminal use in MIC.
In an embodiment of the present invention, described terminal also comprises a ultrasonic wave transmitter module and can distinguishCharacterize the ultrasonic wave receiver module of described each MIC position;
Described ultrasonic wave transmitter module is for emission measurement ultrasonic wave;
Described each ultrasonic wave receiver module receives and runs into the measurement ultrasonic wave that described terminal use reflects;
Described processor determines that in described multiple MIC, the nearest MIC of distance terminal use comprises:
To receive at first the corresponding MIC of the hyperacoustic ultrasonic wave receiver module of described measurement and be defined as distanceThe MIC that terminal use is nearest, or calculate each ultrasonic wave receiver module apart from described end according to following computing formulaThe distance of end subscriber, is defined as minimum MIC corresponding to ultrasonic wave receiver module of distance apart from terminal useNearest MIC:
Si＝(ti-t0)*C-S0
Described Si is the distance of i ultrasonic wave receiver module apart from terminal use, and described i is more than or equal to 1,Be less than or equal to the MIC sum N of described terminal; Described ti is described in i ultrasonic wave receiver module receivesMeasure hyperacoustic time; Described t0 is hyperacoustic time of described ultrasonic wave transmitter module emission measurement; InstituteStating C is the hyperacoustic transmission speed of described measurement; Described S0 is described end of described ultrasonic wave transmitter module distanceThe distance of end subscriber.
In an embodiment of the present invention, described each ultrasonic wave receiver module is integrated is respectively arranged on each correspondenceMIC on.
In an embodiment of the present invention, also comprise loudspeaker, the integrated setting of described ultrasonic wave transmitter moduleOn described loudspeaker.
In an embodiment of the present invention, described processor is also for the each MIC distance when definite described terminalWhen identical from terminal use's distance, keep former MIC arrange or each MIC is set to main MIC; When determiningIn each MIC of described terminal, have M MIC identical apart from terminal use's distance, and this M MIC isWhen the nearest MIC of the described terminal use of distance, from a described M MIC, select one as main MIC; DescribedM is more than or equal to 2, is less than the MIC sum N of described terminal.
In an embodiment of the present invention, described processor is also for setting the major and minor MIC of described terminalAfter, determine corresponding noise reduction algorithm according to new major and minor MIC, and carry out noise reduction according to this noise reduction algorithmProcess.
The invention has the beneficial effects as follows:
Many MIC terminal provided by the invention and MIC method to set up thereof and tonequality method for improving, arranging terminalMIC time, in each MIC, the nearest MIC of distance terminal use is set to main MIC, and other MIC are arrangedFor secondary MIC. This set can ensure for example to use, under pattern (handset mode and hands-free mode) all the time in differenceEnsure that the MIC (this MIC more easily meet noise reduction algorithm requirement) nearest apart from terminal use is main MIC, alsoThe setting that is major and minor MIC of the present invention can be corresponding along with the variation of the relative position of terminal use and terminalDynamic adjustment, make anti-acoustic capability remain on a preferable states always, and then can promote the tonequality of terminalAnd the satisfaction of user's experience.
Brief description of the drawings
Fig. 1 is the MIC schematic layout pattern of existing pair of MIC terminal;
The MIC method to set up schematic flow sheet that Fig. 2 is many MIC terminal of providing in the embodiment of the present invention one;
Fig. 3 for determining by ultrasonic measurement of providing in the embodiment of the present invention one nearest apart from terminal useThe schematic flow sheet of MIC;
The many MIC terminal structure journey schematic diagram of Fig. 4 for providing in the embodiment of the present invention two;
Fig. 5 another many MIC terminal structure journey schematic diagram for providing in the embodiment of the present invention two;
The loadspeaker structure journey schematic diagram of Fig. 6 for providing in the embodiment of the present invention three;
The MIC method to set up schematic flow sheet that Fig. 7 is two MIC terminals of providing in the embodiment of the present invention three.
Detailed description of the invention
By reference to the accompanying drawings the present invention is described in further detail below by detailed description of the invention.
Embodiment mono-:
Shown in Figure 2, the many MIC terminal in the present embodiment refers to that being provided with at least two MIC (is soundElectricity conversion equipment) terminal, its MIC method to set up comprises the following steps:
Step 201: determine the nearest MIC of distance terminal use in each MIC of terminal;
Step 202: this MIC nearest apart from terminal use is set to main MIC, and other MIC is set toSecondary MIC.
For said process, terminal can just trigger and carry out in the time that user opens hands-free mode; Also can be according to establishingOther conditions of putting (for example in real time or timing etc.) trigger and carry out. By above-mentioned set-up mode, can ensureThe setting of the major and minor MIC of terminal can be dynamic accordingly along with the variation of the relative position of terminal use and terminalAdjust, make anti-acoustic capability remain on a preferable states always, and then can promote tonequality and the use of terminalThe satisfaction that family is experienced.
Should be understood that, the distance in the present embodiment between each MIC and the terminal use of definite terminal is passableRealize by various metering systems. For a better understanding of the present invention, below to determine by ultrasonic measurementThis kind of exemplary scheme determines that in each MIC of terminal, the nearest MIC of distance terminal use is example, to thisInvention is done and is carried out a step explanation, shown in Figure 3, comprising:
Step 301: for terminal arranges a ultrasonic wave transmitter module, and can show for each MIC arranges respectively oneLevy the ultrasonic wave receiver module of each MIC position; Can characterize each MIC position herein and refer to ultrasonic wave receiver modulePosition can characterize the position of corresponding MIC; For example, can be by the integrated setting of each ultrasonic wave receiver moduleOn the MIC of each correspondence, make the position consistency of the two; Certainly also can not integrated setting, for example, between the twoCan retain certain distance, as long as this distance meets the distance energy between ultrasonic wave receiver module and terminal useCharacterize the distance between MIC and the terminal use that this ultrasonic wave receiver module is corresponding;
Step 302: ultrasonic wave transmitter module emission measurement ultrasonic wave;
Step 303: each ultrasonic wave receiver module receives and runs into the measurement ultrasonic wave that terminal use reflects;
Step 304: determine the MIC nearest apart from terminal use, comprising: will receive at first measurement ultrasonic waveThe corresponding MIC of ultrasonic wave receiver module be defined as the MIC nearest apart from terminal use, or according to following meterCalculate the distance that formula calculates the described terminal use of each ultrasonic wave receiver module distance, by minimum distance ultrasonicThe MIC that ripple receiver module is corresponding is defined as the MIC nearest apart from terminal use:
Si＝(ti-t0)*C-S0
Si is the distance of i ultrasonic wave receiver module apart from terminal use, and i is more than or equal to 1, is less than or equal toThe MIC sum N of terminal; Ti is that i ultrasonic wave receiver module receives hyperacoustic time of measurement; T0It is hyperacoustic time of ultrasonic wave transmitter module emission measurement; C is for measuring hyperacoustic transmission speed; S0 isUltrasonic wave transmitter module is apart from terminal use's distance.
Also can find out according to above-mentioned formula, more early receive and measure hyperacoustic ultrasonic wave receiver module, itsDistance apart from terminal use is less, and therefore corresponding MIC is also just less apart from terminal use's distance.
In the present embodiment, ultrasonic wave transmitter module can be arranged on the optional position in terminal in theory, as long as itsThe ultrasonic wave energy of measurement of launching meets above-mentioned requirements. In the present embodiment, preferably ultrasonic wave is launched to mouldOn the integrated loudspeaker (being that electroacoustic conversion arranges Sperker) that is arranged on terminal of piece.
In the present embodiment, in the time determining that each MIC of terminal is identical apart from terminal use's distance, keepFormer MIC arranges or each MIC is set to main MIC, also enters single MIC noise reduction mode; When definite terminalEach MIC in, have M MIC identical apart from terminal use's distance, and this M MIC is apart from terminalWhen the nearest MIC of user, from this M MIC, select one as main MIC; M is more than or equal to 2, is less thanThe MIC sum N of terminal. For example,, for three MIC terminals, when determining that wherein two MIC are apart from terminal useDistance identical, and these two MIC are during apart from the nearest MIC of terminal use, from these two MIC, selectSelect one as main MIC; Remaining two MIC are as secondary MIC.
After above-mentioned steps 102, the present embodiment also comprise determine according to newly-installed major and minor MIC rightThe noise reduction algorithm of answering, and carry out noise reduction process according to this noise reduction algorithm, to promote the tonequality of terminal.
In addition, in actual use, terminal is generally that the main MIC of acquiescence uses apart from terminal under handset modeFamily is nearest, does not therefore now generally need additionally MIC to be reset. Generally under hands-free mode, terminal is usedThe distance of the family secondary MIC that likely distance arranged is originally less than the distance of the main MIC of distance. Therefore, this realityExecute example and can, in the time that terminal is opened hands-free mode, just carry out distance terminal use in the each MIC that determines described terminalThe step of nearest MIC and follow-up MIC setting steps.
Embodiment bis-:
The present embodiment provides a kind of many MIC terminal (can be specifically many MIC mobile phone, flat board etc.), pleaseShown in Figure 4, comprise processor and multiple MIC, processor is used for determining multiple MIC distance terminalsThe MIC that family is nearest, this MIC nearest apart from terminal use is set to main MIC, and other MIC is set toSecondary MIC. Processor can just trigger and carry out in the time that user opens hands-free mode; Also can according to arrange otherPart (for example in real time or timing etc.) triggers to be carried out. The setting that can ensure the major and minor MIC of terminal can be along with endThe variation of the relative position of end subscriber and terminal and corresponding dynamically adjust remains on anti-acoustic capability alwaysA preferable states, and then can promote the tonequality of terminal and the satisfaction that user experiences.
Should be understood that, the distance in the present embodiment between each MIC and the terminal use of definite terminal is passableRealize by various metering systems. For a better understanding of the present invention, pass through ultrasound with processor belowMeasure definite this kind of exemplary scheme and determine that in each MIC of terminal, the nearest MIC of distance terminal use is example,The present invention is done and carries out a step explanation. Now shown in Figure 5, terminal also comprises a ultrasonic wave transmittingModule and the ultrasonic wave receiver module that can characterize respectively described each MIC position. Can characterize each MIC position hereinRefer to that ultrasonic wave receiver module position can characterize the position of corresponding MIC; For example, can be by each ultrasonicOn the integrated MIC that is arranged on each correspondence of ripple receiver module, make the position consistency of the two; Certainly can be not integrated yetArrange, for example, between the two, can retain certain distance, as long as this distance meets ultrasonic wave receiver module and endDistance between end subscriber can characterize the distance between MIC and the terminal use that this ultrasonic wave receiver module is corresponding.
Ultrasonic wave transmitter module is for emission measurement ultrasonic wave;
Each ultrasonic wave receiver module receives and runs into the measurement ultrasonic wave that terminal use reflects;
Processor determines that in multiple MIC, the nearest MIC of distance terminal use comprises:
To receive at first the corresponding MIC of the hyperacoustic ultrasonic wave receiver module of measurement is defined as apart from terminalThe MIC that user is nearest, or calculate the described terminal use of each ultrasonic wave receiver module distance according to following computing formulaThe distance at family, is defined as nearest apart from terminal use by minimum MIC corresponding to ultrasonic wave receiver module of distanceMIC:
Si＝(ti-t0)*C-S0
Si is the distance of i ultrasonic wave receiver module apart from terminal use, and i is more than or equal to 1, is less than or equal toThe MIC sum N of terminal; Ti is that i ultrasonic wave receiver module receives hyperacoustic time of measurement; T0It is hyperacoustic time of ultrasonic wave transmitter module emission measurement; C is for measuring hyperacoustic transmission speed; S0 isUltrasonic wave transmitter module is apart from terminal use's distance.
Also can find out according to above-mentioned formula, more early receive and measure hyperacoustic ultrasonic wave receiver module, itsDistance apart from terminal use is less, and therefore corresponding MIC is also just less apart from terminal use's distance.
In the present embodiment, ultrasonic wave transmitter module can be arranged on the optional position in terminal in theory, as long as itsThe ultrasonic wave energy of measurement of launching meets above-mentioned requirements. In the present embodiment, preferably ultrasonic wave is launched to mouldOn the integrated loudspeaker (being that electroacoustic conversion arranges Sperker) that is arranged on terminal of piece.
In the present embodiment, when processor is in the time determining that each MIC of terminal is identical apart from terminal use's distance,Keep former MIC arrange or each MIC is set to main MIC, also enter single MIC noise reduction mode; When determiningIn each MIC of terminal, have M MIC identical apart from terminal use's distance, and this M MIC is distanceWhen the nearest MIC of terminal use, from this M MIC, select one as main MIC; M is more than or equal to 2,Be less than the MIC sum N of terminal. For example,, for four MIC terminals, when determining that wherein two MIC are apart from terminalUser's distance is identical, and these two MIC are during apart from the nearest MIC of terminal use, from these two MICOne of middle selection is as main MIC; Remaining two MIC are as secondary MIC.
In the present embodiment, processor is also for setting after the major and minor MIC of terminal, according to new major and minorMIC determines corresponding noise reduction algorithm, and carries out noise reduction process according to this noise reduction algorithm, to promote the sound of terminalMatter.
In actual use, terminal is generally that the main MIC of acquiescence is nearest apart from terminal use under handset mode,Therefore now generally do not need additionally MIC to be reset. Generally under hands-free mode, terminal use is likelyThe distance of the original secondary MIC arranging of distance is less than the distance of the main MIC of distance. Therefore, the present embodiment can beTerminal is opened when hands-free mode, and processor is just carried out in each MIC of definite described terminal distance terminal useThe step of near MIC and follow-up MIC setting steps.
Embodiment tri-:
For a better understanding of the present invention, taking two MIC mobile phones as mobile phone is as example, the present invention is done into one belowWalk exemplary explanation. The MIC layout of two MIC mobile phones is shown in Figure 1.
In the present embodiment, utilizing the audio-frequency module of mobile phone, (is electro-acoustic conversion device by the loudspeaker in Fig. 1Speaker) transform as and not only can send out audible sound but also can send out hyperacoustic Wideband module, be used for launching ultrasonic wave. ChangeLoudspeaker after making is shown in Figure 6, and centre is ultrasonic wave vibrating diaphragm, for generation of ultrasonic wave; Certainly, alsoCan directly adopt sonac to produce ultrasonic wave, now only need integrated this sonac being arranged on to raise one's voiceOn device. Acoustic-electric conversion equipment MIC1 and MIC2 in Fig. 1 are transformed into and not only can receive audible sound but also can receive superThe Wideband module of sound wave, is used for receiving ultrasonic wave.
Finally, by cell phone processor, metrical information is carried out to integrated treatment, calculate MIC1, MIC2And the distance between user's (being terminal use), and the MIC nearer apart from user be set to main MIC,Another MIC is set to secondary MIC, thereby ensures anti-acoustic capability, promotes hand-free call tonequality.
In the prior art, the major-minor MIC information using when hand-free call is constant, therefore when people and mobile phoneRelative position while changing, worsening may appear in the signal to noise ratio of major-minor MIC, thereby affects cell phoneAnti-acoustic capability and call voice tonequality. The scheme that provides of the present embodiment is provided, and the major-minor MIC of described mobile phone can be withThe relative position of people and cell phone changes and dynamically adjusts, and makes anti-acoustic capability remain on oneGood state, thus call tone quality improved, promoting user's experience effect, concrete adjustment process is as follows.
In the time of ultrasound emission module emission measurement ultrasonic wave, will report handset processes device launch time, each MICOn ultrasonic receiver module receive while running into the measurement ultrasonic wave that terminal use feeds back, by time of receptionReport handset processes device, handset processes device according to ultrasonic receiver module reporting information judge MIC1 and MIC2 andUser's distance.
Suppose that ultrasonic wave transmitter module (also can regard loudspeaker as) is S1, MIC1 distance apart from user's distanceBe that S2, MIC2 are that S3, ultrasonic transmission speed are C, ultrasonic wave apart from user's distance from user's distanceLaunch time be t0, MIC1 receive the ultrasonic wave time be t1, MIC2 to receive the ultrasonic wave time be t2,:
S2＝(t1-t0)*C-S1
S3＝(t2-t0)*C-S1
Can be found out by above formula, receive super early than MIC2 when MIC1 receives the ultrasonic signal timeWhen the sound wave time, S2 < S3 is that MIC1 is nearer apart from user, and now MIC1 is set to main MIC, MIC2Be set to secondary MIC; When MIC1 receives the ultrasonic signal time when being later than MIC2 and receiving the ultrasonic wave time,S2 > S3 is that MIC1 is far away apart from user, now MIC2 is set to main MIC, MIC1 and is set to secondary MIC;When S2=S3 is when to be MIC1 identical apart from user's distance with MIC2, can maintain former major-minor MIC and arrange notChange or noise reduction mode are set to single MIC noise reduction.
Above-mentioned adjustment process is shown in Figure 7, comprising:
Step 701: judge that whether mobile phone is opened hands-freely, in this way, goes to step 702; Otherwise, go to step705；
Step 702: obtain the MIC1 of mobile phone and MIC2 and terminal use's relative position;
Step 703: major and minor MIC is set according to the relative position information of MIC1 and MIC and user terminal;
Step 704: upgrade noise reduction algorithm according to the major and minor MIC setting, thereby keep noise reduction algorithm all the timeIn a kind of stable state, ensure the anti-acoustic capability of cell phone, make up because of the change in location pair for peopleThe impact of noise reduction algorithm performance, thus tonequality promoted;
Step 705: finish.
Above content is in conjunction with concrete embodiment further description made for the present invention, can not recognizeDetermine specific embodiment of the invention and be confined to these explanations. For the ordinary skill of the technical field of the inventionPersonnel, without departing from the inventive concept of the premise, can also make some simple deduction or replace,All should be considered as belonging to protection scope of the present invention.
Claims (15)
1. a MIC method to set up for the terminal of MIC more than, is characterized in that, comprising:
Determine the nearest MIC of distance terminal use in each MIC of described terminal;
The nearest MIC of the described terminal use of this distance is set to main MIC, and other MIC is set to secondary MIC.
2. the MIC method to set up of many MIC terminal as claimed in claim 1, is characterized in that, logicalCross the nearest MIC of distance terminal use in each MIC that ultrasonic measurement determines described terminal.
3. the MIC method to set up of many MIC terminal as claimed in claim 2, is characterized in that, logicalCrossing the nearest MIC of distance terminal use in each MIC that ultrasonic measurement determines described terminal comprises:
For described terminal arranges a ultrasonic wave transmitter module, and can characterize each for each MIC arranges respectively oneThe ultrasonic wave receiver module of MIC position;
Described ultrasonic wave transmitter module emission measurement ultrasonic wave, described each ultrasonic wave receiver module receives and runs into instituteState the measurement ultrasonic wave that terminal use reflects;
To receive at first the corresponding MIC of the hyperacoustic ultrasonic wave receiver module of described measurement and be defined as distanceThe MIC that terminal use is nearest, or calculate each ultrasonic wave receiver module apart from described end according to following computing formulaThe distance of end subscriber, is defined as minimum MIC corresponding to ultrasonic wave receiver module of distance apart from terminal useNearest MIC:
Si＝(ti-t0)*C-S0
Described Si is the distance of i ultrasonic wave receiver module apart from terminal use, and described i is more than or equal to 1,Be less than or equal to the MIC sum N of described terminal; Described ti is described in i ultrasonic wave receiver module receivesMeasure hyperacoustic time; Described t0 is hyperacoustic time of described ultrasonic wave transmitter module emission measurement; InstituteStating C is the hyperacoustic transmission speed of described measurement; Described S0 is described end of described ultrasonic wave transmitter module distanceThe distance of end subscriber.
4. the MIC method to set up of many MIC terminal as claimed in claim 3, is characterized in that, instituteState each ultrasonic wave receiver module respectively on the integrated MIC that is arranged on each correspondence.
5. the MIC method to set up of the many MIC terminal as described in claim 3 or 4, is characterized in that,On the integrated loudspeaker that is arranged on described terminal of described ultrasonic wave transmitter module.
6. the MIC method to set up of the many MIC terminal as described in claim 1-4 any one, its featureBe, in the time determining that each MIC of described terminal is identical apart from terminal use's distance, keep former MIC to arrangeOr each MIC is set to main MIC; When determining in each MIC of described terminal, there is M MIC apart from terminalUser's distance is identical, and this M MIC is while being the nearest MIC of the described terminal use of distance, from described MIn individual MIC, select one as main MIC; Described M is more than or equal to 2, is less than the MIC sum N of described terminal.
7. a tonequality method for improving for the terminal of MIC more than, is characterized in that, described method comprises:
As described in setting by the MIC method to set up of the many MIC terminal as described in claim 1-6 any oneAfter the major and minor MIC of terminal, determine corresponding noise reduction algorithm according to new major and minor MIC, and according to thisNoise reduction algorithm carries out noise reduction process.
8. the tonequality method for improving of many MIC terminal as claimed in claim 7, is characterized in that,Before determining the nearest MIC of distance terminal use in each MIC of described terminal, also comprise and judge described terminalWhether open hands-free mode, in this way, then carried out and determine in each MIC of described terminal that distance terminal useThe step of near MIC.
9. the terminal of MIC more than, is characterized in that, comprises processor and multiple MIC, described processorFor determining the nearest MIC of described multiple MIC distance terminal use, by nearest described this distance terminal useMIC be set to main MIC, other MIC is set to secondary MIC.
10. many MIC terminal as claimed in claim 9, is characterized in that, described processor is by superThe nearest MIC of distance terminal use in each MIC of described terminal is determined in acoustic measurement.
11. many MIC terminals as claimed in claim 10, is characterized in that, described terminal also comprises oneIndividual ultrasonic wave transmitter module and the ultrasonic wave receiver module that can characterize respectively described each MIC position;
Described ultrasonic wave transmitter module is for emission measurement ultrasonic wave;
Described each ultrasonic wave receiver module receives and runs into the measurement ultrasonic wave that described terminal use reflects;
Described processor determines that in described multiple MIC, the nearest MIC of distance terminal use comprises:
To receive at first the corresponding MIC of the hyperacoustic ultrasonic wave receiver module of described measurement and be defined as distanceThe MIC that terminal use is nearest, or calculate each ultrasonic wave receiver module apart from described end according to following computing formulaThe distance of end subscriber, is defined as minimum MIC corresponding to ultrasonic wave receiver module of distance apart from terminal useNearest MIC:
Si＝(ti-t0)*C-S0
Described Si is the distance of i ultrasonic wave receiver module apart from terminal use, and described i is more than or equal to 1,Be less than or equal to the MIC sum N of described terminal; Described ti is described in i ultrasonic wave receiver module receivesMeasure hyperacoustic time; Described t0 is hyperacoustic time of described ultrasonic wave transmitter module emission measurement; InstituteStating C is the hyperacoustic transmission speed of described measurement; Described S0 is described end of described ultrasonic wave transmitter module distanceThe distance of end subscriber.
12. many MIC terminals as claimed in claim 11, is characterized in that, described each ultrasonic wave receivesModule is respectively on the integrated MIC that is arranged on each correspondence.
13. many MIC terminals as described in claim 10 or 11, is characterized in that, also comprise and raising one's voiceDevice, described ultrasonic wave transmitter module is integrated to be arranged on described loudspeaker.
14. many MIC terminals as described in claim 9-12 any one, is characterized in that described processingDevice also, in the time determining that each MIC of described terminal is identical apart from terminal use's distance, keeps former MIC to establishPut or each MIC is set to main MIC; When determining in each MIC of described terminal, there is M MIC apart from endThe distance of end subscriber is identical, and this M MIC is while being the nearest MIC of the described terminal use of distance, from described MIn individual MIC, select one as main MIC; Described M is more than or equal to 2, is less than the MIC sum N of described terminal.
15. many MIC terminals as described in claim 9-12 any one, is characterized in that described processingDevice is also for setting after the major and minor MIC of described terminal, determines corresponding according to new major and minor MICNoise reduction algorithm, and carry out noise reduction process according to this noise reduction algorithm.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410557502.4A CN105592198A (en) | 2014-10-20 | 2014-10-20 | Multi-MIC terminal, MIC setting method and sound quality improvement method |
| PCT/CN2015/071492 WO2015184828A1 (en) | 2014-10-20 | 2015-01-23 | Terminal having plurality of mics, mic setting method therefor and sound quality enhancement method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410557502.4A CN105592198A (en) | 2014-10-20 | 2014-10-20 | Multi-MIC terminal, MIC setting method and sound quality improvement method |
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| CN105592198A true CN105592198A (en) | 2016-05-18 |
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| WO (1) | WO2015184828A1 (en) |
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