CN101895870A - Silence recognition device for mobile phone, mobile phone de-noising method and system thereof in silence mode - Google Patents
Silence recognition device for mobile phone, mobile phone de-noising method and system thereof in silence mode Download PDFInfo
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- CN101895870A CN101895870A CN201010132880XA CN201010132880A CN101895870A CN 101895870 A CN101895870 A CN 101895870A CN 201010132880X A CN201010132880X A CN 201010132880XA CN 201010132880 A CN201010132880 A CN 201010132880A CN 101895870 A CN101895870 A CN 101895870A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0251—Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses a silence recognition device for a mobile phone, a de-noising method and a de-noising system for the mobile phone in a silence mode, wherein, the silence recognition device for the mobile phone comprises a filter module, a rectifier module, an amplifier module and a switching output module, wherein, the filter module is used for receiving an audio frequency signal sent by a baseband chip or an audio frequency coding and decoding chip of the mobile phone, filtering out a voice analog signal and outputting a noise analog signal; the rectifier module is used for converting the noise analog signal into a noise digital signal; the amplifier module is used for amplifying the noise digital signal; and the switching output module is used for comparing the amplified noise digital signal with the starting threshold of the switching output module and then outputting a comparison result as a mobile phone de-noising action condition in a silence mode. The invention can automatically recognize the uplink silence mode of the mobile phone, close a gain amplifier connected with a sounding device of the mobile phone or lower the audio power output to the sounding device of the mobile phone, thus avoiding noise interference under the uplink silence mode, achieving the de-noising effect in a silence mode and lowering the power consumption of the mobile phone.
Description
Technical field
The present invention relates to the mobile phone application, specially refer to a kind of method and system of discerning the device of the quiet identification of mobile phone with the de-noising when quiet of its mobile phone.
Background technology
In the mobile phone communication process, if a side has other thing to handle and don't to hang up, but the other side that is unwilling simultaneously hears the sound of oneself, and he tends to select up quiet so.Under the ideal state, any sound of local terminal can not appear in the other side's the receiver.But, in actual applications, still have tedious noise in the other side's the receiver.Reason is very simple, when receiver is imported in no signal, because internal noise and exterior antenna input noise can make its output produce very high noise level, existing mobile phone receiving terminal audio frequency processing system as shown in Figure 1, because it is up quiet that receiving terminal can't be discerned the opposing party, so the audio power gain amplifier 3 of receiving terminal will drive receiver, thereby produce high noise output.This phenomenon is particularly evident under the hands-free pattern of answering of use.
In sum, up quiet if receiving terminal can be discerned the opposing party, and close audio power gain amplifier 3 or reduce the audio signal power that outputs to receiver, just can eliminate noise, save the receiving terminal power consumption.
Summary of the invention
Purpose of the present invention makes in the mobile phone communication process for the device that the quiet identification of a kind of mobile phone is provided and method, the system of the quiet de-noising of mobile phone, and conversation one side is up when quiet, and the recipient eliminates the still interference of the noise signal of existence.
The invention provides the device of the quiet identification of a kind of mobile phone, it is characterized in that, comprising:
Filtration module is used to receive the audio signal of mobile phone base band chip or the transmission of audio coding decoding chip and carry out filtering, filtering voice analog signal, output noise analog signal;
Rectification module is used for described noise simulation conversion of signals is become the noisy digit signal;
Amplification module is used for described noisy digit signal is amplified;
Switching output module is used for the startup thresholding of noisy digit signal after the described amplification and switching output module is compared, and output is as the comparative result of the quiet de-noising operation condition of mobile phone.
Further, described device also comprises the amplification sensitivity module, is used to be provided with the amplifying parameters of described amplification module.
Further, described device also comprises the amplification sensitivity module, is used to be provided with the amplifying parameters of described amplification module.
Further, described device also comprises the switch sensitivity module, is used to be provided with the startup thresholding of described switching output module.
Further, described switching output module also comprises timer, is used for described noisy digit signal is carried out timing greater than the persistent state of described startup thresholding.
The invention provides the method for the quiet de-noising of a kind of mobile phone, it is characterized in that, comprising:
Under the mobile phone communication state, the audio signal of mobile phone base band chip or the transmission of audio coding decoding chip is carried out filtering, rectification, amplification, the output noise digital signal;
Noisy digit signal and the startup thresholding of presetting are compared, and comparative result sends to the power gain amplifier that is connected with the mobile phone sound-producing device and enables control pin;
Control the switch of described power gain amplifier according to comparative result.
Further, the described step switch of controlling described gain amplifier according to comparative result comprises:
If the noisy digit signal is greater than starting thresholding, described power gain amplifier cuts out;
If the noisy digit signal is less than starting thresholding, described power gain amplifier is opened.
Further, described method also comprises:
Time parameter is set, the persistent state timing that described noisy digit signal is prescribed a time limit greater than enabling gate.
The invention provides a kind of system that realizes the quiet de-noising of mobile phone, comprise: the power gain amplifier that is used for the mobile phone base band chip of output audio signal or audio coding decoding chip, mobile phone sound-producing device and is connected with the mobile phone sound-producing device, it is characterized in that, also comprise the quiet recognition device of mobile phone, it comprises:
Filtration module is used to receive the audio signal of mobile phone base band chip or the transmission of audio coding decoding chip and carry out filtering, filtering voice analog signal, output noise analog signal;
Rectification module is used for described noise simulation conversion of signals is become the noisy digit signal;
Amplification module is used for described noisy digit signal is amplified;
Switching output module is used for the startup thresholding of noisy digit signal after the described amplification and switching output module is compared, and output comparative result to described power gain amplifier enables control pin.
Further, the quiet recognition device of described mobile phone also comprises the amplification sensitivity module, is used to be provided with the amplifying parameters of described amplification module.
Further, the quiet recognition device of described mobile phone also comprises the switch sensitivity module, is used for the startup thresholding of the described switching output module of equipment.
Further, described switching output module also comprises timer, is used for described noisy digit signal is carried out timing greater than the persistent state of described startup thresholding.
The present invention provides the method for the quiet de-noising of a kind of mobile phone in addition, it is characterized in that, comprising:
Under the mobile phone communication state, the audio signal of mobile phone base band chip or the transmission of audio coding decoding chip is carried out filtering, rectification, amplification, the output noise digital signal;
Noisy digit signal and the startup thresholding of presetting are compared, and comparative result is sent to described mobile phone base band chip or audio coding decoding chip;
Control exports the audio signal power of mobile phone sound-producing device to according to comparative result.
Further, described step comprises according to the audio signal power that comparative result control exports the mobile phone sound-producing device to:
If the noisy digit signal is greater than starting thresholding, described mobile phone base band chip or audio coding decoding chip reduce the gain amplifying parameters value of mobile phone base band chip or audio coding decoding chip;
If the noisy digit signal is less than starting thresholding, the gain amplifying parameters value of mobile phone base band chip or audio coding decoding chip is constant.
Further, described step comprises according to the audio signal power that comparative result control exports the mobile phone sound-producing device to:
If the noisy digit signal is greater than starting thresholding, described mobile phone base band chip or audio coding decoding chip send a control signal to the power-adjustable gain amplifier that is connected with the mobile phone sound-producing device, reduce the gain amplifying parameters value of power-adjustable gain amplifier;
If the noisy digit signal is less than starting thresholding, the gain amplifying parameters value of described power-adjustable gain amplifier is constant.
Further, described step also comprises according to the audio signal power that comparative result control exports the mobile phone sound-producing device to:
If the noisy digit signal is greater than starting thresholding, described mobile phone base band chip or audio coding decoding chip send a control signal to the power-adjustable gain amplifier that is connected with the mobile phone sound-producing device, reduce the gain amplifying parameters value of power-adjustable gain amplifier;
If the noisy digit signal is less than starting thresholding, the gain amplifying parameters value of described power-adjustable gain amplifier is constant.
Further, described method also comprises:
Amplifying parameters is set, the amplifying parameters that described step is amplified is controlled.
The present invention provides the system of the quiet de-noising of a kind of mobile phone in addition, comprise: be used for the mobile phone base band chip or the audio coding decoding chip of audio signal power that output audio signal, control export the mobile phone sound-producing device to, mobile phone sound-producing device and the power gain amplifier that is connected with the mobile phone sound-producing device, it is characterized in that, also comprise the quiet recognition device of mobile phone, it comprises:
Filtration module is used to receive the audio signal of mobile phone base band chip or the transmission of audio coding decoding chip and carry out filtering, filtering voice analog signal, output noise analog signal;
Rectification module is used for described noise simulation conversion of signals is become the noisy digit signal;
Amplification module is used for described noisy digit signal is amplified;
Switching output module is used for the startup thresholding of noisy digit signal after the described amplification and switching output module is compared, and the output comparative result is to described mobile phone base band chip or audio coding decoding chip.
Further, the quiet recognition device of described mobile phone also comprises the amplification sensitivity module, is used to be provided with the amplifying parameters of described amplification module.
Further, the quiet recognition device of described mobile phone also comprises the switch sensitivity module, is used for the startup thresholding of the described switching output module of equipment.
Further, described switching output module also comprises timer, is used for described noisy digit signal is carried out timing greater than the persistent state of described startup thresholding.
Quiet recognition device of mobile phone provided by the invention and the quiet noise-eliminating method of mobile phone, system can discern the up silent mode of mobile phone automatically, close the audio signal power that the gain amplifier that is connected with the mobile phone sound-producing device or reduction export the mobile phone sound-producing device to, avoid the noise jamming under the up silent mode, reach real quiet de-noising, reduced mobile telephone power consumption simultaneously.
Description of drawings
Fig. 1 is the structural representation of existing mobile phone receiving terminal audio frequency processing system;
Fig. 2 is the quiet recognition device structural representation of the mobile phone of one embodiment of the invention;
Fig. 3 is the method flow diagram of the quiet de-noising of a kind of mobile phone of another embodiment of the present invention;
Fig. 4 is the system construction drawing of embodiment among Fig. 3;
Fig. 5 is the method flow diagram of the quiet de-noising of a kind of mobile phone of further embodiment of this invention;
Fig. 6 is the system construction drawing of embodiment among Fig. 5.
The realization of the object of the invention, functional characteristics and advantage will be in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
The present invention is in the mobile phone communication process, and receiving terminal is closed local terminal power gain amplifier or reduced the audio signal amplifying power by the up silent mode of identification transmitting terminal, realizes de-noising.
With reference to Fig. 2, provide the quiet recognition device 70 of a kind of mobile phone mainly to comprise in one embodiment of the invention:
Mobile phone is when talking state, because internal noise and exterior antenna input noise, when no matter being the normal voice conversation or during up silent mode, receiving terminal all can be received the noise simulation signal, but the noise simulation signal power when the normal voice call mode is far below the noise simulation signal power under the up silent mode, according to the difference of the noise simulation signal power under the two states, utilizing this device for carrying out said 70 can discern mobile phone is to be in normal voice call mode or up silent mode.
This device for carrying out said 70 receives after the audio signal that mobile phone base band chip or audio coding decoding chip send by filtering, rectification, amplify the noisy digit signal that obtains being used for comparison, compare with the startup thresholding of switching output module 40, if the noise current level is greater than starting thresholding, then mobile phone is in up silent mode, switching output module 40 output low levels 0, trigger next step mobile phone de-noising action, if the noise current level is less than starting thresholding, then mobile phone is in the normal voice call mode, switching output module 40 output high level 1, the handset audio signal is normally exported.
The quiet recognition device 70 of above-mentioned mobile phone can be provided with as required and amplify sensitivity module 50 and switch sensitivity module 60, amplify the amplifying parameters that sensitivity module 50 is used to regulate amplification module 30, switch sensitivity module 60 is used for the startup thresholding of by-pass cock output module 40.In order to guarantee user's subjective feeling, switching output module 40 inside also can be provided with a timer, if in official hour, the startup thresholding that the level of amplification module 30 outputs is provided with greater than switch sensitivity module 60 always, then switching output module 40 output low levels 0.
The quiet recognition device 70 of above-mentioned mobile phone can be discerned the up silent mode of mobile phone automatically, to trigger the quiet de-noising action of mobile phone, has avoided noise jamming to reduce mobile telephone power consumption simultaneously.
With reference to Fig. 3, provide a kind of mobile phone quiet noise-eliminating method in the another embodiment of the present invention, comprise step:
Step 102 is carried out rectification to the noise simulation signal, and the noise simulation conversion of signals is become the noisy digit signal;
Step 103 is amplified the noisy digit signal;
Step 104 compares noisy digit signal after amplifying and pre-set startup thresholding, if the noisy digit signal is greater than starting thresholding, then output low level 0 is to the power gain amplifier that is connected with the mobile phone sound-producing device, execution in step 106; If the noisy digit signal is then exported high level 1 to the power gain amplifier that is connected with the mobile phone sound-producing device, execution in step 105 less than starting thresholding;
Wherein, in step 103, amplifying parameters can be set as required; In step 104, the startup threshold parameter can be set as required, step 104 also can be provided with a time parameter, to of the persistent state timing of noise current level greater than the startup thresholding, if at the appointed time, the noise current level is always greater than starting thresholding, ability execution in step 106, otherwise execution in step 105.
The quiet noise-eliminating method of above-mentioned mobile phone can be discerned the up silent mode of mobile phone automatically, closes the power gain amplifier that is connected with the mobile phone sound-producing device, avoids the noise jamming under the up silent mode, reaches real quiet de-noising, has reduced mobile telephone power consumption simultaneously.
With reference to Fig. 4, the system construction drawing of another embodiment of the present invention comprises:
Mobile phone base band chip or audio coding decoding chip 301 are used for output audio signal;
Mobile phone sound-producing device 304 and the power gain amplifier 303 that is connected with mobile phone sound-producing device 304;
The quiet recognition device 302 of mobile phone, it comprises following functional module:
Filtration module is used to receive the audio signal of mobile phone base band chip or 301 transmissions of audio coding decoding chip and carry out filtering, filtering voice analog signal, output noise analog signal;
Rectification module is used for described noise simulation conversion of signals is become the noisy digit signal;
Amplification module is used for described noisy digit signal is amplified;
Switching output module is used for the startup thresholding of noisy digit signal after the described amplification and switching output module is compared, and output comparative result to power gain amplifier 303 enables control pin.
The system works principle of present embodiment is:
The noise simulation signal power of normal voice call mode is less than the noise simulation signal power under the up silent mode, the quiet recognition device 302 of mobile phone is according to above-mentioned difference, the audio signal that mobile phone base band chip or audio coding decoding chip 301 send is discerned, according to the switch of recognition result power controlling gain amplifier 303;
As recognition result is the normal voice call mode, and the switching output module output high level 1 of the quiet recognition device 302 of mobile phone is to the control pin that enables of power gain amplifier 303, and power gain amplifier 303 is opened, signal output; As recognition result is up silent mode, and the switching output module output low level 0 of the quiet recognition device 302 of mobile phone is to the control pin that enables of power gain amplifier 303, and power gain amplifier 303 cuts out, and mobile phone is quiet.
The quiet recognition device 302 of mobile phone is provided with the amplification sensitivity module as required, switch sensitivity module and timer, the amplification sensitivity module is used to be provided with the amplifying parameters of above-mentioned amplification module, the switch sensitivity module is used to be provided with the startup thresholding of above-mentioned switching output module, timer is used for the noisy digit signal is carried out timing greater than the persistent state that starts thresholding, if in official hour, the noisy digit signal is always greater than starting thresholding, switching output module is output low level 0, power gain amplifier 303 is just closed, promptly the delay of certain hour has been carried out in up quiet action, rather than uply closed power gain amplifier 303 at once after quiet detecting.
The quiet noise-canceling system of above-mentioned mobile phone can be discerned the up silent mode of mobile phone automatically, closes the power gain amplifier that is connected with the mobile phone sound-producing device, avoids the noise jamming under the up silent mode, reaches real quiet de-noising, has reduced mobile telephone power consumption simultaneously.
With reference to Fig. 5, the quiet noise-eliminating method of the mobile phone of further embodiment of this invention may further comprise the steps:
Step 201 under the mobile phone communication state, is carried out filtering to the audio signal of mobile phone base band chip or the output of audio coding decoding chip, and the filtering voice analog signal keeps the noise simulation signal;
Step 202 is carried out rectification to the noise simulation signal, and the noise simulation conversion of signals is become the noisy digit signal;
Step 203 is amplified the noisy digit signal;
Step 204 compares noisy digit signal after amplifying and pre-set startup thresholding, if the noisy digit signal is greater than starting thresholding, then output low level 0 is to mobile phone base band chip or audio coding decoding chip, execution in step 206; If the noisy digit signal is then exported high level 1 to mobile phone base band chip or audio coding decoding chip, execution in step 205 less than starting thresholding;
Step 206 reduces the audio signal power that exports the mobile phone sound-producing device to, the quiet de-noising of mobile phone.
Wherein, step 206 can realize the reduction of audio signal gain amplifying parameters by following two kinds of modes:
1) mobile phone base band chip or audio coding decoding chip reduce the gain amplifying parameters value of mobile phone base band chip or audio coding decoding chip;
2) when the power gain amplifier that is connected with the mobile phone sound-producing device is the power-adjustable gain amplifier, mobile phone base band chip or audio coding decoding chip send control signals to adjustable power amplifier, reduce the amplifying parameters of adjustable power amplifier;
When step 206 is non-adjustable when the power gain amplifier that is connected with the mobile phone sound-producing device, can only be with mode 1) reduce the audio signal power that exports the mobile phone sound-producing device to, when but the power gain amplifier that is connected with the mobile phone sound-producing device is a timing, but selection mode 1) or mode 2) in any, or mode 1) and mode 2) carry out simultaneously.
Step 203 in the said method can be provided with amplifying parameters as required; In step 204, the startup threshold parameter can be set as required, step 204 also can be provided with a time parameter, to of the persistent state timing of noise current level greater than the startup thresholding, if at the appointed time, the noise current level is always greater than starting thresholding, ability execution in step 206, otherwise execution in step 205.
The quiet noise-eliminating method of above-mentioned mobile phone can be discerned the up silent mode of mobile phone automatically, reduce audio signal output power, make the noise simulation signal of receiving terminal very low, reached quiet de-noising effect and can look after user's impression simultaneously again, avoided the user because of the complete quiet illusion that produces dropped calls.
With reference to Fig. 6, the system construction drawing of further embodiment of this invention comprises:
Mobile phone base band chip or audio coding decoding chip 401 are used for the audio signal power that output audio signal and control export the mobile phone sound-producing device to;
Mobile phone sound-producing device 404 and the power gain amplifier 403 that is connected with mobile phone sound-producing device 404;
The quiet recognition device 402 of mobile phone, it comprises following functional module:
Filtration module is used to receive the audio signal of mobile phone base band chip or 401 transmissions of audio coding decoding chip and carry out filtering, filtering voice analog signal, output noise analog signal;
Rectification module is used for described noise simulation conversion of signals is become the noisy digit signal;
Amplification module is used for described noisy digit signal is amplified;
Switching output module is used for the startup thresholding of noisy digit signal after the described amplification and switching output module is compared, and the output comparative result is to mobile phone base band chip or audio coding decoding chip 401.
The system works principle of the foregoing description is:
The noise simulation signal power of normal voice call mode is less than the noise simulation signal power under the up silent mode, the quiet recognition device 402 of mobile phone is according to above-mentioned difference, the audio signal that mobile phone base band chip or audio coding decoding chip 401 send is discerned, and control exports the audio signal power of mobile phone sound-producing device 404 to according to recognition result.Need to prove that native system adopts the amplifying parameters of adjusting the control audio signal rather than directly closes power gain amplifier 403, is may produce the illusion of the other side's on-hook or signal interruption owing to consider the user under quiet fully state.
As recognition result is the normal voice call mode, and the switching output module of the quiet recognition device 402 of mobile phone is exported high level 1 to mobile phone base band chip or audio coding decoding chip 401, mobile phone base band chip or audio coding decoding chip 401 operate as normal, signal output; As recognition result is up silent mode, the switching output module output low level 0 of the quiet recognition device 402 of mobile phone is to mobile phone base band chip or audio coding decoding chip 401, and mobile phone base band chip or audio coding decoding chip 401 reduce the audio signal power that exports mobile phone sound-producing device 404 to.
Mobile phone base band chip or audio coding decoding chip 401 reduce according to following two kinds of modes realizes the audio signal amplifying parameters:
1) mobile phone base band chip or audio coding decoding chip 401 reduce the gain multiplication factor of mobile phone base band chip or audio coding decoding chip 401 inside;
2) when the power gain amplifier 403 that is connected with mobile phone sound-producing device 404 is the power-adjustable gain amplifier, mobile phone base band chip or audio coding decoding chip 401 send control signals to power gain amplifier 403, reduce the amplifying parameters of power gain amplifier 403;
When the power gain amplifier that is connected with mobile phone sound-producing device 404 403 when non-adjustable, can only be with mode 1) reduce the audio signal power that exports mobile phone sound-producing device 404 to, when but the power gain amplifier 403 that is connected with mobile phone sound-producing device 404 is timing, but selection mode 1) or mode 2) in any, or mode 1) and mode 2) carry out simultaneously.
The quiet recognition device 402 of mobile phone is provided with the amplification sensitivity module as required, switch sensitivity module and timer, the amplification sensitivity module is used to be provided with the amplifying parameters of above-mentioned amplification module, the switch sensitivity module is used to be provided with the startup thresholding of above-mentioned switching output module, timer is used for the noisy digit signal is carried out timing greater than the persistent state that starts thresholding, if in official hour, the noisy digit signal is always greater than starting thresholding, switching output module is output low level 0, promptly the delay of certain hour has been carried out in up quiet action, rather than detected the up amplifying power that reduces audio signal after quiet at once.
The quiet noise-canceling system of above-mentioned mobile phone has been realized the up silent mode of automatic identification mobile phone, reduce the audio signal output power that exports the mobile phone sound-producing device to, make the noise simulation signal of receiving terminal very low, reached quiet de-noising effect and can look after user's impression simultaneously again, avoided the user because of the complete quiet illusion that produces dropped calls.
The above only is the preferred embodiments of the present invention; be not so limit claim of the present invention; every equivalent structure or equivalent flow process conversion that utilizes specification of the present invention and accompanying drawing content to be done; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (21)
1. the device of the quiet identification of mobile phone is characterized in that, comprising:
Filtration module is used to receive the audio signal of mobile phone base band chip or the transmission of audio coding decoding chip and carry out filtering, filtering voice analog signal, output noise analog signal;
Rectification module is used for described noise simulation conversion of signals is become the noisy digit signal;
Amplification module is used for described noisy digit signal is amplified;
Switching output module is used for the startup thresholding of noisy digit signal after the described amplification and switching output module is compared, and output is as the comparative result of the quiet de-noising operation condition of mobile phone.
2. device as claimed in claim 1 is characterized in that, also comprises the amplification sensitivity module, is used to be provided with the amplifying parameters of described amplification module.
3. device as claimed in claim 1 or 2 is characterized in that, also comprises the switch sensitivity module, is used to be provided with the startup thresholding of described switching output module.
4. device as claimed in claim 1 or 2 is characterized in that described switching output module also comprises timer, is used for described noisy digit signal is carried out timing greater than the persistent state of described startup thresholding.
5. the method for the quiet de-noising of mobile phone is characterized in that, comprising:
Under the mobile phone communication state, the audio signal of mobile phone base band chip or the transmission of audio coding decoding chip is carried out filtering, rectification and amplification, the output noise digital signal;
Noisy digit signal and the startup thresholding of presetting are compared, and comparative result sends to the power gain amplifier that is connected with the mobile phone sound-producing device and enables control pin;
Control the switch of described power gain amplifier according to comparative result.
6. method as claimed in claim 5 is characterized in that, the switch that described step is controlled described gain amplifier according to comparative result comprises:
When the noisy digit signal greater than starting thresholding, described power gain amplifier cuts out;
When the noisy digit signal less than starting thresholding, described power gain amplifier is opened.
7. as claim 5 or 6 described methods, it is characterized in that described method also comprises:
Time parameter is set, the persistent state timing that described noisy digit signal is prescribed a time limit greater than enabling gate.
8. as claim 5 or 6 described methods, it is characterized in that described step amplification also comprises: amplifying parameters is set.
9. the system of the quiet de-noising of mobile phone, comprise: the power gain amplifier that is used for the mobile phone base band chip of output audio signal or audio coding decoding chip, mobile phone sound-producing device and is connected with the mobile phone sound-producing device, it is characterized in that also comprise the quiet recognition device of mobile phone, it comprises:
Filtration module is used to receive the audio signal of mobile phone base band chip or the transmission of audio coding decoding chip and carry out filtering, filtering voice analog signal, output noise analog signal;
Rectification module is used for described noise simulation conversion of signals is become the noisy digit signal;
Amplification module is used for described noisy digit signal is amplified;
Switching output module is used for the startup thresholding of noisy digit signal after the described amplification and switching output module is compared, and output comparative result to described power gain amplifier enables control pin.
10. system as claimed in claim 9 is characterized in that, the quiet recognition device of described mobile phone also comprises the amplification sensitivity module, is used to be provided with the amplifying parameters of described amplification module.
11., it is characterized in that the quiet recognition device of described mobile phone also comprises the switch sensitivity module as claim 9 or 10 described systems, be used for the startup thresholding of the described switching output module of equipment.
12. as claim 9 or 10 described systems, it is characterized in that described switching output module also comprises timer, be used for described noisy digit signal is carried out timing greater than the persistent state of described startup thresholding.
13. the method for the quiet de-noising of mobile phone is characterized in that, comprising:
Under the mobile phone communication state, the audio signal of mobile phone base band chip or the transmission of audio coding decoding chip is carried out filtering, rectification and amplification, the output noise digital signal;
Noisy digit signal and the startup thresholding of presetting are compared, and comparative result is sent to described mobile phone base band chip or audio coding decoding chip;
Control exports the audio signal power of mobile phone sound-producing device to according to comparative result.
14. method as claimed in claim 13 is characterized in that, described step is controlled the audio signal power that exports the mobile phone sound-producing device to according to comparative result and is comprised:
When the noisy digit signal greater than starting thresholding, described mobile phone base band chip or audio coding decoding chip reduce the gain amplifying parameters value of mobile phone base band chip or audio coding decoding chip;
When the noisy digit signal less than starting thresholding, the gain amplifying parameters value of described mobile phone base band chip or audio coding decoding chip is constant.
15. method as claimed in claim 13 is characterized in that, described step is controlled the audio signal power that exports the mobile phone sound-producing device to according to comparative result and is comprised:
When the noisy digit signal greater than starting thresholding, described mobile phone base band chip or audio coding decoding chip send a control signal to the power-adjustable gain amplifier that is connected with the mobile phone sound-producing device, reduce the gain amplifying parameters value of power-adjustable gain amplifier;
When the noisy digit signal less than starting thresholding, the gain amplifying parameters value of described power-adjustable gain amplifier is constant.
16. method as claimed in claim 14 is characterized in that, described step is controlled the audio signal power that exports the mobile phone sound-producing device to according to comparative result and is also comprised:
When the noisy digit signal greater than starting thresholding, described mobile phone base band chip or audio coding decoding chip send a control signal to the power-adjustable gain amplifier that is connected with the mobile phone sound-producing device, reduce the gain amplifying parameters value of power-adjustable gain amplifier;
When the noisy digit signal less than starting thresholding, the gain amplifying parameters value of described power-adjustable gain amplifier is constant.
17., it is characterized in that described step amplification also comprises: amplifying parameters is set as claim 13 or 16 described methods.
18. the system of the quiet de-noising of mobile phone, comprise: be used for the mobile phone base band chip or the audio coding decoding chip of audio signal power that output audio signal, control export the mobile phone sound-producing device to, mobile phone sound-producing device and the power gain amplifier that is connected with the mobile phone sound-producing device, it is characterized in that, also comprise the quiet recognition device of mobile phone, it comprises:
Filtration module is used to receive the audio signal of mobile phone base band chip or the transmission of audio coding decoding chip and carry out filtering, filtering voice analog signal, output noise analog signal;
Rectification module is used for described noise simulation conversion of signals is become the noisy digit signal;
Amplification module is used for described noisy digit signal is amplified;
Switching output module is used for the startup thresholding of noisy digit signal after the described amplification and switching output module is compared, and the output comparative result is to described mobile phone base band chip or audio coding decoding chip.
19. system as claimed in claim 18 is characterised in that, the quiet recognition device of described mobile phone also comprises the amplification sensitivity module, is used to be provided with the amplifying parameters of described amplification module.
20., it is characterized in that the quiet recognition device of described mobile phone also comprises the switch sensitivity module as claim 18 or 19 described systems, be used for the startup thresholding of the described switching output module of equipment.
21. as claim 18 or 19 described systems, it is characterized in that described switching output module also comprises timer, be used for described noisy digit signal is carried out timing greater than the persistent state of described startup thresholding.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010132880XA CN101895870A (en) | 2010-03-23 | 2010-03-23 | Silence recognition device for mobile phone, mobile phone de-noising method and system thereof in silence mode |
| PCT/CN2010/075179 WO2011116569A1 (en) | 2010-03-23 | 2010-07-15 | Mobile phone mute identification apparatus and mobile phone mute noise cancellation method and system |
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| CN201010132880XA CN101895870A (en) | 2010-03-23 | 2010-03-23 | Silence recognition device for mobile phone, mobile phone de-noising method and system thereof in silence mode |
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| CN101895870A true CN101895870A (en) | 2010-11-24 |
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| CN201010132880XA Pending CN101895870A (en) | 2010-03-23 | 2010-03-23 | Silence recognition device for mobile phone, mobile phone de-noising method and system thereof in silence mode |
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| CN (1) | CN101895870A (en) |
| WO (1) | WO2011116569A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102638598A (en) * | 2012-03-20 | 2012-08-15 | 华为终端有限公司 | Voice signal processing method and device as well as mobile terminal |
| CN103002380A (en) * | 2011-09-13 | 2013-03-27 | 索尼公司 | Information processing apparatus and information processing method |
| CN103546637A (en) * | 2013-10-22 | 2014-01-29 | 德赛电子(惠州)有限公司 | Adaptive method of mobile terminal contextual model |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114885404B (en) * | 2022-05-06 | 2023-11-28 | 甄十信息科技（上海）有限公司 | Method and equipment for reducing communication power consumption of smart watch |
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| US4411021A (en) * | 1981-07-27 | 1983-10-18 | Motorola, Inc. | Automatic threshold squelch |
| CN1946101A (en) * | 2006-10-31 | 2007-04-11 | 华为技术有限公司 | Method and device for realizing mobile terminal audio signal self adaption |
| CN201307873Y (en) * | 2008-11-12 | 2009-09-09 | 宇龙计算机通信科技(深圳)有限公司 | Mobile terminal |
| CN101668061A (en) * | 2008-09-01 | 2010-03-10 | 索尼爱立信移动通信日本株式会社 | Audio signal processing apparatus, audio signal processing method, and communication terminal |
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| CN1540623A (en) * | 2003-11-04 | 2004-10-27 | 清华大学 | Threshold self-adaptive speech sound detection system |
| CN100573663C (en) * | 2006-04-20 | 2009-12-23 | 南京大学 | Mute detection method based on speech characteristic to jude |
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- 2010-03-23 CN CN201010132880XA patent/CN101895870A/en active Pending
- 2010-07-15 WO PCT/CN2010/075179 patent/WO2011116569A1/en active Application Filing
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| US4411021A (en) * | 1981-07-27 | 1983-10-18 | Motorola, Inc. | Automatic threshold squelch |
| CN1946101A (en) * | 2006-10-31 | 2007-04-11 | 华为技术有限公司 | Method and device for realizing mobile terminal audio signal self adaption |
| CN101668061A (en) * | 2008-09-01 | 2010-03-10 | 索尼爱立信移动通信日本株式会社 | Audio signal processing apparatus, audio signal processing method, and communication terminal |
| CN201307873Y (en) * | 2008-11-12 | 2009-09-09 | 宇龙计算机通信科技(深圳)有限公司 | Mobile terminal |
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| CN103002380A (en) * | 2011-09-13 | 2013-03-27 | 索尼公司 | Information processing apparatus and information processing method |
| CN103002380B (en) * | 2011-09-13 | 2017-08-15 | 索尼公司 | Message processing device and information processing method |
| CN102638598A (en) * | 2012-03-20 | 2012-08-15 | 华为终端有限公司 | Voice signal processing method and device as well as mobile terminal |
| CN103546637A (en) * | 2013-10-22 | 2014-01-29 | 德赛电子(惠州)有限公司 | Adaptive method of mobile terminal contextual model |
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| WO2011116569A1 (en) | 2011-09-29 |
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