CN104270489A - Method and system for determining main microphone and auxiliary microphone from multiple microphones - Google Patents
Method and system for determining main microphone and auxiliary microphone from multiple microphones Download PDFInfo
- Publication number
- CN104270489A CN104270489A CN201410457747.XA CN201410457747A CN104270489A CN 104270489 A CN104270489 A CN 104270489A CN 201410457747 A CN201410457747 A CN 201410457747A CN 104270489 A CN104270489 A CN 104270489A
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
- H04M1/6008—Substation equipment, e.g. for use by subscribers including speech amplifiers in the transmitter circuit
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets
Abstract
The invention provides a method and system for determining a main microphone and an auxiliary microphone from multiple microphones. The method includes the steps of determining the microphone, closest to a sound source, in the multiple microphones as the main microphone, and selecting one microphone, except for the main microphone, in the multiple microphones as the auxiliary microphone. The method and system solve the technical problem that as sound signals obtained by the microphones are low in signal to noise ratio, the sound quality is affected.
Description
Technical field
The present invention relates to mobile terminal de-noising field, particularly relate to a kind of method and system determining major-minor microphone from multiple microphone.
Background technology
Mobile terminal de-noising scheme is generally provided with two microphones, main microphone and secondary microphone.There is certain distance requirement the two position, and during hand-held call, main microphone gathers voice and ambient noise, and secondary microphone gathers ambient noise and a small amount of voice signal, the ambient noise sizableness that two-way microphone collects, and voice signal exists larger difference.The voice signal of two-way microphone collection, by utmost eliminating ambient noise after differential amplification or Digital Signal Processing, retains voice signal.
Present mobile terminal is when dispatching from the factory, on fuselage microphone which be main microphone, which is that secondary microphone is all provided, as shown in Figure 1a, the microphone 1 of mobile phone lower end is main Mike, the microphone 2 on Fig. 1 b camera side is secondary microphone, and this configuration generally has effect very much to de-noising during call.
If but were operated in image pickup mode by the above-mentioned mobile terminal arranging major-minor microphone, main microphone would be now away from sound source, and the sound timbre now recorded is just not ideal, there is larger ambient noise.
Summary of the invention
The invention provides a kind of method and system determining major-minor microphone from multiple microphone, how to avoid the voice signal signal to noise ratio because of microphone acquisition low to solve, and then affect the technical problem of sound timbre.
For solving the problems of the technologies described above, the invention provides a kind of method determining major-minor microphone from multiple microphone, described method comprises:
Main microphone is defined as from the microphone that sound source is nearest by multiple microphone;
One is selected as secondary microphone from the multiple microphones except main microphone.
Alternatively, described from the multiple microphones except main microphone select one as secondary microphone, comprising:
According to the signal to noise ratio size of Received signal strength, described multiple microphones except main microphone are sorted;
Be less than the microphone of set point from signal to noise ratio and select one as secondary microphone.
Alternatively, described being less than the microphone of set point from signal to noise ratio selects one as secondary microphone, comprising:
From signal to noise ratio be less than the microphone of set point select minimum signal to noise ratio corresponding microphone as secondary microphone.
Alternatively, be describedly set to main microphone by multiple microphone from the microphone that sound source is nearest, comprise:
The maximum signal to noise ratio of value is picked out from the signal to noise ratio of multiple microphones signal;
Using microphone corresponding for signal to noise ratio maximum for described value as main microphone.
Alternatively,
Described multiple microphone is the microphone in single terminal.
Alternatively, be describedly set to main microphone by multiple microphone from the microphone that sound source is nearest, comprise:
According to described terminal operating application type and estimate under this application sound source position select be set to main microphone from the microphone that sound source is nearest.
For solving the problems of the technologies described above, present invention also offers a kind of system determining major-minor microphone from multiple microphone, described system comprises: main microphone determining unit and secondary microphone determining unit, wherein,
Described main microphone determining unit, for being set to main microphone by multiple microphone from the microphone that sound source is nearest;
Described secondary microphone determining unit, for selecting one as secondary microphone from the multiple microphones except main microphone.
Alternatively, described secondary microphone determining unit, for selecting one as secondary microphone from the multiple microphones except main microphone, comprising:
According to the signal to noise ratio size of Received signal strength, described multiple microphones except main microphone are sorted;
Be less than the microphone of set point from signal to noise ratio and select one as secondary microphone.
Alternatively, described secondary microphone determining unit, for be less than set point from signal to noise ratio microphone in select one as secondary microphone, comprising:
From signal to noise ratio be less than the microphone of set point select minimum signal to noise ratio corresponding microphone as secondary microphone.
Alternatively, described main microphone determining unit, for being set to main microphone by multiple microphone from the microphone that sound source is nearest, comprising:
The maximum signal to noise ratio of value is picked out from the signal to noise ratio of multiple microphones signal;
Using microphone corresponding for signal to noise ratio maximum for described value as main microphone.
Alternatively,
Described system is used for single terminal.
Alternatively, described main microphone determining unit, for being set to main microphone by multiple microphone from the microphone that sound source is nearest, comprising:
According to described terminal operating application type and estimate under this application sound source position select be set to main microphone from the microphone that sound source is nearest.
Method described in the embodiment of the present invention, major-minor microphone can switch flexibly, and the voice signal signal to noise ratio because of microphone acquisition can be avoided low, affects the defect of sound timbre.
Accompanying drawing explanation
Fig. 1 a is place, charging hole, mobile phone bottom end view;
Fig. 1 b is mobile phone front view and rearview;
Fig. 2 is the method flow diagram determining major-minor microphone from multiple microphone of the embodiment of the present invention;
Fig. 3 is the system composition diagram determining major-minor microphone from multiple microphone of the embodiment of the present invention.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly understand, hereinafter will be described in detail to embodiments of the invention by reference to the accompanying drawings.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combination in any mutually.
Fig. 2 is the method flow diagram determining major-minor microphone from multiple microphone of the embodiment of the present invention.
S201 is set to main microphone by multiple microphone from the microphone that sound source is nearest;
Alternatively, determine which microphone is nearest from sound source by snr of received signal, namely from the signal to noise ratio of multiple microphones signal, pick out the maximum signal to noise ratio of value; Using microphone corresponding for signal to noise ratio maximum for described value as main microphone;
Alternatively, when described multiple microphone is positioned in single terminal, according to described terminal operating application type and estimate under this application sound source position select be set to main microphone from the microphone that sound source is nearest, as when terminal works is at call mode, the posture of making a phone call according to most of user estimates the microphone of sound source bottom terminal under this application, therefore using the microphone that is positioned at bottom terminal as main microphone; When terminal works is at self-image pickup mode, estimate the microphone of sound source near the terminal back side under this application, therefore using the microphone at the terminal back side as main microphone;
S202 selects one as secondary microphone from the multiple microphones except main microphone.
Alternatively, according to the signal to noise ratio size of Received signal strength, described multiple microphones except main microphone are sorted; Be less than the microphone of set point from signal to noise ratio and select one as secondary microphone, pass through set point, the voice signal difference that major-minor microphones can be avoided to arrive is too small, cause to the voice signal of microphone collection by differential amplification or Digital Signal Processing in weaken voice signal, affect de-noising effect;
Alternatively, be strengthen de-noising effect, can from signal to noise ratio be less than the microphone of set point select minimum signal to noise ratio corresponding microphone as secondary microphone;
Alternatively, after pressing such scheme determination major-minor microphone, can the signal to noise ratio difference of Real-Time Monitoring major-minor microphones signal, if the signal to noise ratio of major-minor microphone is undesirable, major-minor microphone can be redefined according to the method described above.
Technique scheme can be used for selecting major-minor microphone from the multiple microphones single terminal, also can be used for selecting major-minor microphone from multiple microphones of multiple terminal.
According to technique scheme, use the mobile terminal shown in Fig. 1, if this mobile terminal work is in the talk mode, can using microphone 1 as main microphone, microphone 2 is as secondary microphone; If this terminal works carries out the pattern of making a video recording at main camera under, can using microphone 2 as main microphone, microphone 1 is as secondary microphone; If this terminal works carries out the pattern of making a video recording at secondary camera under, can using microphone 1 as main microphone, microphone 2 is as secondary microphone.As can be seen here, adopt the method described in the embodiment of the present invention, major-minor microphone can switch flexibly, and the voice signal signal to noise ratio because of microphone acquisition can be avoided low, affects sound timbre.
Fig. 3 is the system composition diagram determining major-minor microphone from multiple microphone of the embodiment of the present invention.
Described system comprises: main microphone determining unit and secondary microphone determining unit, wherein,
Described main microphone determining unit, for being set to main microphone by multiple microphone from the microphone that sound source is nearest;
Alternatively, main microphone determining unit can pick out the maximum signal to noise ratio of value from the signal to noise ratio of multiple microphones signal; Using microphone corresponding for signal to noise ratio maximum for described value as main microphone;
Alternatively, when described system is positioned in single terminal, main microphone determining unit also can be selected to be set to main microphone from the microphone that sound source is nearest according to described terminal operating application type and the position of sound source under this application estimated;
Described secondary microphone determining unit, for selecting one as secondary microphone from the multiple microphones except main microphone;
Alternatively, secondary microphone determining unit can according to the signal to noise ratio size of Received signal strength to described multiple microphone sequences except main microphone; Be less than the microphone of set point from signal to noise ratio and select one as secondary microphone; By set point, the voice signal difference that major-minor microphones can be avoided to arrive is too small, cause to the voice signal of microphone collection by differential amplification or Digital Signal Processing in weaken voice signal, affect de-noising effect;
Alternatively, be strengthen de-noising effect, can from signal to noise ratio be less than the microphone of set point select minimum signal to noise ratio corresponding microphone as secondary microphone;
Alternatively, after pressing such scheme determination major-minor microphone, can the signal to noise ratio difference of Real-Time Monitoring major-minor microphones signal, if the signal to noise ratio of major-minor microphone is undesirable, major-minor microphone can be redefined according to the method described above.
Said system can be used for selecting major-minor microphone from the multiple microphones single terminal, also can be used for selecting major-minor microphone from multiple microphones of multiple terminal.
The all or part of step that one of ordinary skill in the art will appreciate that in said method is carried out instruction related hardware by program and is completed, and described program can be stored in computer-readable recording medium, as read-only memory, disk or CD etc.Alternatively, all or part of step of above-described embodiment also can use one or more integrated circuit to realize, and correspondingly, each module/unit in above-described embodiment can adopt the form of hardware to realize, and the form of software function module also can be adopted to realize.The present invention is not restricted to the combination of the hardware and software of any particular form.
It should be noted that; the present invention also can have other various embodiments; when not deviating from the present invention's spirit and essence thereof; those of ordinary skill in the art can make various corresponding change and distortion according to the present invention, but these change accordingly and are out of shape the protection range that all should belong to the claim appended by the present invention.
Claims (12)
1. from multiple microphone, determine a method for major-minor microphone, it is characterized in that, described method comprises:
Main microphone is defined as from the microphone that sound source is nearest by multiple microphone;
One is selected as secondary microphone from the multiple microphones except main microphone.
2. the method for claim 1, is characterized in that, described from the multiple microphones except main microphone select one as secondary microphone, comprising:
According to the signal to noise ratio size of Received signal strength, described multiple microphones except main microphone are sorted;
Be less than the microphone of set point from signal to noise ratio and select one as secondary microphone.
3. method as claimed in claim 2, is characterized in that, described being less than the microphone of set point from signal to noise ratio selects one as secondary microphone, comprising:
From signal to noise ratio be less than the microphone of set point select minimum signal to noise ratio corresponding microphone as secondary microphone.
4. the method according to any one of claims 1 to 3, is characterized in that, is describedly set to main microphone by multiple microphone from the microphone that sound source is nearest, comprising:
The maximum signal to noise ratio of value is picked out from the signal to noise ratio of multiple microphones signal;
Using microphone corresponding for signal to noise ratio maximum for described value as main microphone.
5. the method according to any one of claims 1 to 3, is characterized in that,
Described multiple microphone is the microphone in single terminal.
6. method as claimed in claim 5, is characterized in that, is describedly set to main microphone by multiple microphone from the microphone that sound source is nearest, comprising:
According to described terminal operating application type and estimate under this application sound source position select be set to main microphone from the microphone that sound source is nearest.
7. from multiple microphone, determine a system for major-minor microphone, it is characterized in that, described system comprises: main microphone determining unit and secondary microphone determining unit, wherein,
Described main microphone determining unit, for being set to main microphone by multiple microphone from the microphone that sound source is nearest;
Described secondary microphone determining unit, for selecting one as secondary microphone from the multiple microphones except main microphone.
8. system as claimed in claim 7, is characterized in that, described secondary microphone determining unit, for selecting one as secondary microphone from the multiple microphones except main microphone, comprising:
According to the signal to noise ratio size of Received signal strength, described multiple microphones except main microphone are sorted;
Be less than the microphone of set point from signal to noise ratio and select one as secondary microphone.
9. system as claimed in claim 8, is characterized in that, described secondary microphone determining unit, for be less than set point from signal to noise ratio microphone in select one as secondary microphone, comprising:
From signal to noise ratio be less than the microphone of set point select minimum signal to noise ratio corresponding microphone as secondary microphone.
10. the system according to any one of claim 7 ~ 9, is characterized in that, described main microphone determining unit, for being set to main microphone by multiple microphone from the microphone that sound source is nearest, comprising:
The maximum signal to noise ratio of value is picked out from the signal to noise ratio of multiple microphones signal;
Using microphone corresponding for signal to noise ratio maximum for described value as main microphone.
11. systems according to any one of claim 7 ~ 9, is characterized in that,
Described system is used for single terminal.
12. systems as claimed in claim 11, is characterized in that, described main microphone determining unit, for being set to main microphone by multiple microphone from the microphone that sound source is nearest, comprising:
According to described terminal operating application type and estimate under this application sound source position select be set to main microphone from the microphone that sound source is nearest.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410457747.XA CN104270489A (en) | 2014-09-10 | 2014-09-10 | Method and system for determining main microphone and auxiliary microphone from multiple microphones |
| PCT/CN2014/089211 WO2015154424A1 (en) | 2014-09-10 | 2014-10-22 | Method and system for determining main microphone and auxiliary microphone among multiple microphones |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410457747.XA CN104270489A (en) | 2014-09-10 | 2014-09-10 | Method and system for determining main microphone and auxiliary microphone from multiple microphones |
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| CN104270489A true CN104270489A (en) | 2015-01-07 |
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| CN201410457747.XA Pending CN104270489A (en) | 2014-09-10 | 2014-09-10 | Method and system for determining main microphone and auxiliary microphone from multiple microphones |
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| WO (1) | WO2015154424A1 (en) |
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| CN110166879B (en) * | 2019-06-28 | 2020-11-13 | 歌尔科技有限公司 | Voice acquisition control method and device and TWS earphone |
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| WO2015154424A1 (en) | 2015-10-15 |
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