CN103716438A - Noise reduction method, device and mobile terminal - Google Patents
Noise reduction method, device and mobile terminal Download PDFInfo
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- CN103716438A CN103716438A CN201210372088.0A CN201210372088A CN103716438A CN 103716438 A CN103716438 A CN 103716438A CN 201210372088 A CN201210372088 A CN 201210372088A CN 103716438 A CN103716438 A CN 103716438A
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Abstract
The invention provides a noise reduction method, a device and a mobile terminal. The method and the device are applied to the mobile terminal with double microphones. The noise reduction method comprises the steps that whether the noise of the ambient environment is greater than a predetermined threshold is judged, and a judgment result is acquired; when the judgment result is that the noise of the ambient environment is greater than or equal to the predetermined threshold, a noise reduction algorithm of the double microphones is switched on for noise reduction; when the judgment result is that the noise of the ambient environment is less than the predetermined threshold, the noise reduction algorithm is switched off. According to the technical scheme of the invention, the problem of use inconvenience, which is caused by the fact that the noise reduction algorithm of the double microphones needs manual setting before a conversation, can be effectively solved.
Description
Technical field
The present invention relates to communication products field, more specifically, relate to a kind of noise-reduction method, device and mobile terminal.
Background technology
The mobile terminal using is at present mostly with dual microphone, and with dual microphone decrease of noise functions, and with the handheld terminal of dual microphone decrease of noise functions when incoming call or the outbound calling, capital acquiescence is opened decrease of noise functions, because noise reduction algorithm has certain damage to call tone quality, easily cause the slight distortion of sound.Common solution is handheld terminal preset opening or close decrease of noise functions before call, i.e. noise reduction is opened or closed in manual switchover, but this method needs user manually to arrange before call, not intelligence.
Therefore, in prior art, exist dual microphone noise reduction algorithm before call, manually to arrange and the awkward problem brought.
Summary of the invention
The present invention discloses a kind of noise-reduction method, and device and mobile terminal exist dual microphone noise reduction algorithm before call, manually to arrange and the awkward problem brought for solving prior art.
For achieving the above object, according to an aspect of the present invention, provide a kind of noise-reduction method, and adopt following technical scheme:
Noise-reduction method, for having the mobile terminal of dual microphone, comprising: judge whether ambient noise is greater than predetermined threshold, and obtain a judged result; Described, while judgment result is that described ambient noise is more than or equal to described predetermined threshold, the noise reduction algorithm of opening described dual microphone carries out noise reduction; Described, while judgment result is that described ambient noise is less than described predetermined threshold, close described noise reduction algorithm.
Further, before the noise reduction algorithm of the described dual microphone of described unlatching carries out noise reduction, described noise-reduction method also comprises: to user, send the prompting message that the described dual microphone of automatic unlatching carries out noise reduction.
Further, described close described noise reduction algorithm after, described noise-reduction method also comprises: the main microphone of controlling described dual microphone opens and controls the secondary microphone of described dual microphone and cuts out.
Further, described predetermined threshold is 60 decibels.
According to another aspect of the present invention, provide a kind of denoising device, and adopt following technical scheme:
Denoising device, for having the mobile terminal of dual microphone, comprising: judge module, for judging whether ambient noise is greater than predetermined threshold, and obtains a judged result; Opening module, for described, while judgment result is that described ambient noise is more than or equal to described predetermined threshold, the noise reduction algorithm of opening described dual microphone carries out noise reduction; Closing module, for while judgment result is that described ambient noise is less than described predetermined threshold, closing described noise reduction algorithm described.
Further, described denoising device also comprises: sending module, carries out the prompting message of noise reduction for send the described dual microphone of automatic unlatching to user.
Further, described denoising device also comprises: control module, and for controlling the main microphone of described dual microphone, open and control the secondary microphone of described dual microphone and close.
Further, described predetermined threshold is 60 decibels.
According to a further aspect of the invention, provide a kind of mobile terminal, and adopt following technical scheme:
Mobile terminal comprises above-mentioned denoising device.
User's ambient noise around before the present invention converses by judgement, determine whether to open dual microphone decrease of noise functions, thereby avoid no matter user's ambient noise around how, all automatically open dual microphone decrease of noise functions, and the noise reduction algorithm bringing has certain damage to call tone quality, easily cause the slight distortion problem of sound, meanwhile, according to front user ambient noise around, automatically open dual microphone decrease of noise functions or close.Efficiently solve the awkward problem that exists dual microphone noise reduction algorithm manually to arrange in prior art and bring before call.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, forms the application's a part, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 represents the main flow chart of the noise-reduction method described in the embodiment of the present invention;
Fig. 2 represents the particular flow sheet of the noise-reduction method described in the embodiment of the present invention; And
Fig. 3 represents the structural representation of the denoising device described in the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are elaborated, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
Fig. 1 represents the main flow chart of the noise-reduction method described in the embodiment of the present invention.
Shown in Figure 1, this noise-reduction method can comprise the steps:
S101: judge whether ambient noise is greater than predetermined threshold, and obtain a judged result;
S103: while judgment result is that described ambient noise is more than or equal to described predetermined threshold, the noise reduction algorithm of opening described dual microphone carries out noise reduction described;
S105: while judgment result is that described ambient noise is less than described predetermined threshold, close described noise reduction algorithm described.
In the technique scheme of the present embodiment, in step S101, before call, system need to detect the incoming call of mobile terminal unlatching or remove Electricity Functional, once that is system detects mobile terminal unlatching incoming call or removes Electricity Functional, just automatically open the secondary microphone of mobile terminal, this pair microphone is used for collecting ambient noise, user's noise size is around collected and is judged.And system sets in advance a predetermined threshold, this predetermined threshold is set as the case may be, for example, can be 60 decibels, but be not limited to this, sets this threshold value and is mainly used in determining whether to open dual microphone noise reduction algorithm.
In step S103, be according to the judged result of step S101, to carry out concrete noise reduction to carry out, when user's ambient noise is around more than or equal to the threshold value of setting, the noise reduction algorithm of opening the dual microphone of mobile terminal carries out noise reduction process, and in step S105, when the result of judgement is less than this threshold value for user's ambient noise, closes the noise reduction algorithm of dual microphone, and further close secondary microphone, open main microphone, and only have main microphone to carry out work.
By the technique scheme of the present embodiment, user's ambient noise around before judgement call, determine whether to open dual microphone decrease of noise functions, thereby avoid no matter user's ambient noise around how, all automatically open dual microphone decrease of noise functions, and the noise reduction algorithm bringing has certain damage to call tone quality, easily cause the slight distortion problem of sound.And, according to circumstances determine whether to open dual microphone decrease of noise functions, also remove artificial switching from, improved user's experience.
Preferably, when ambient noise is more than or equal to the threshold value of setting, opens the noise reduction algorithm of the dual microphone of mobile terminal, and send to user the prompting message that the described dual microphone of automatic unlatching carries out noise reduction.
Fig. 2 represents the particular flow sheet of the noise-reduction method described in the embodiment of the present invention.
Shown in Figure 2, noise-reduction method specifically can comprise the steps:
Step 20: send a telegram here or remove electricity;
Be that this method need be carried out when system detects mobile terminal incoming call or removes electricity.
Step 21: open secondary microphone;
When system detects mobile terminal incoming call or removes electricity, first open the secondary microphone of mobile terminal dual microphone, first this pair microphone collects user's ambient noise around.
Step 22: judgement ambient noise size;
To the ambient noise of collecting in step 21, judge judge whether this ambient noise is greater than default threshold value, in the present embodiment, default threshold value be take 60dBA as example, when ambient noise is more than or equal to 60dBA, and execution step 24, when this ambient noise is less than 60dBA, execution step 23.
Step 23: close noise reduction algorithm;
When ambient noise is less than 60dBA, close the noise reduction algorithm of dual microphone, this is because noise reduction algorithm has certain damage to call tone quality, easily causes the slight distortion of sound.Therefore, when ambient noise is less than 60dBA, close the noise reduction algorithm of dual microphone, to avoid the damage that call tone quality had because of noise reduction algorithm.
Step 24: start noise reduction algorithm;
When ambient noise is more than or equal to 60dBA, start the noise reduction algorithm of dual microphone, to reduce the impact of ambient noise on call.
Step 25: close secondary microphone;
After closing the noise reduction algorithm of dual microphone, close secondary microphone.
Step 26: after starting the noise reduction algorithm of dual microphone, noise reduction algorithm is set, prepares for starting call.
Step 27: open main microphone;
After closing secondary microphone, open main microphone, only use main microphone to carry out work.
Step 28: complete initialization setting, converse ready.
In this enforcement, according to user's ambient noise around, automatically open dual microphone decrease of noise functions or close.Efficiently solve the awkward problem that exists dual microphone noise reduction algorithm manually to arrange in prior art and bring before call.
Fig. 3 represents the structural representation of the denoising device described in the embodiment of the present invention.
Shown in Figure 3, denoising device, for having the mobile terminal of dual microphone, specifically can comprise: judge module 30, for judging before conversing whether ambient noise is greater than predetermined threshold, and obtains a judged result; Opening module 32, for described, while judgment result is that described ambient noise is more than or equal to described predetermined threshold, the noise reduction algorithm of opening described dual microphone carries out noise reduction; Closing module 34, for while judgment result is that described ambient noise is less than described predetermined threshold, closing described noise reduction algorithm described.
Preferably, described denoising device also comprises: sending module (not shown), carries out the prompting message of noise reduction for send the described dual microphone of automatic unlatching to user.
Preferably, described denoising device also comprises: control module (not shown), and for controlling the main microphone of described dual microphone, open and control the secondary microphone of described dual microphone and close.
Preferably, described predetermined threshold is 60 decibels.
Mobile terminal comprises above-mentioned denoising device.
User's ambient noise around before the present invention converses by judgement, determine whether to open dual microphone decrease of noise functions, thereby avoid no matter user's ambient noise around how, all automatically open dual microphone decrease of noise functions, and the noise reduction algorithm bringing has certain damage to call tone quality, easily cause the slight distortion problem of sound, meanwhile, according to front user ambient noise around, automatically open dual microphone decrease of noise functions or close.Efficiently solve the awkward problem that exists dual microphone noise reduction algorithm manually to arrange in prior art and bring before call.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of principle of the present invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (9)
1. a noise-reduction method, for having the mobile terminal of dual microphone, is characterized in that, comprising:
Judge whether ambient noise is greater than predetermined threshold, and obtain a judged result;
Described, while judgment result is that described ambient noise is more than or equal to described predetermined threshold, the noise reduction algorithm of opening described dual microphone carries out noise reduction;
Described, while judgment result is that described ambient noise is less than described predetermined threshold, close described noise reduction algorithm.
2. noise-reduction method as claimed in claim 1, is characterized in that, before the noise reduction algorithm of the described dual microphone of described unlatching carries out noise reduction, described noise-reduction method also comprises:
To user, send the prompting message that the described dual microphone of automatic unlatching carries out noise reduction.
3. noise-reduction method as claimed in claim 1, is characterized in that, described close described noise reduction algorithm after, described noise-reduction method also comprises:
The main microphone of controlling described dual microphone opens and controls the secondary microphone of described dual microphone and cuts out.
4. noise-reduction method as claimed in claim 1, is characterized in that, described predetermined threshold is 60 decibels.
5. a denoising device, for having the mobile terminal of dual microphone, is characterized in that, comprising:
Judge module, for judging whether ambient noise is greater than predetermined threshold, and obtains a judged result;
Opening module, for described, while judgment result is that described ambient noise is more than or equal to described predetermined threshold, the noise reduction algorithm of opening described dual microphone carries out noise reduction;
Closing module, for while judgment result is that described ambient noise is less than described predetermined threshold, closing described noise reduction algorithm described.
6. denoising device as claimed in claim 5, is characterized in that, also comprises:
Sending module, carries out the prompting message of noise reduction for send the described dual microphone of automatic unlatching to user.
7. denoising device as claimed in claim 5, is characterized in that, also comprises:
Control module, opens and controls the secondary microphone of described dual microphone and close for controlling the main microphone of described dual microphone.
8. denoising device as claimed in claim 5, is characterized in that, described predetermined threshold is 60 decibels.
9. a mobile terminal, is characterized in that, comprises the denoising device described in claim 5-8 any one.
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| CN104581536A (en) * | 2015-01-26 | 2015-04-29 | 深圳市冠旭电子有限公司 | Method and device for controlling noise reduction of earphone |
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