CN1148884C - Method for processing sound signal - Google Patents
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- CN1148884C CN1148884C CNB991271556A CN99127155A CN1148884C CN 1148884 C CN1148884 C CN 1148884C CN B991271556 A CNB991271556 A CN B991271556A CN 99127155 A CN99127155 A CN 99127155A CN 1148884 C CN1148884 C CN 1148884C
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Abstract
The present invention relates to a method for processing sound signals, which is applied to a signal processing system. The present invention comprises the following steps: receiving all sound signals or designated sound signals, including sound source signals and background noise signals by a sound signal receiving device; distinguishing between the sound source signals and the background noise signals by a sound signal discriminator according to the phase change, the phase shift and the oscillator intensity of the sound signals, and frequency change caused by Doppler effect; eliminating the background noise signals, and transmitting the sound source signals to a sound signal processing device, wherein the sound signal processing device only amplifies the sound source signals, and a filter circuit to filter off the background noise signals is not needed.
Description
Invention field:
The invention relates to a kind of sound signal processing method, more detailed it, relate to and a kind ofly utilize the phase change of differentiating sound signal and skew, signal oscillator intensity and eliminate the background noise signal is also only done processing and amplifying to sounding source of sound signal method by the caused frequency shift of Du Bule effect.
Background of invention:
The mode of general known removal noise all need use filter, via filter circuit, to voltage signal also or current signal handle.With allow more than the characteristic frequency or following voltage signal also or current signal pass through, maybe can allow in the specific frequency range voltage signal also or current signal pass through, to distinguish required signal and noise signal.According to the difference of operation principle, general filter can be divided into low frequency pass filter, high frequency pass filter, band frequency pass filter and remove band filter frequently.And no matter be the filter of that class, all be to be used in the circuit, voltage signal also or the amplitude of current signal, frequency characteristic is handled all signals of importing this filter circuit via filter circuit, to tell noise and required signal.Hence one can see that, and filter circuit now all is that all signals are input in the circuit, and the voltage that utilizes signal more also or the amplitude of electric current, frequency characteristic, and tell noise and required signal.
When utilizing known techniques, can't when receiving all signals at the beginning, promptly distinguish required signal and noise with the characteristic of signal, that is, can't be at the beginning the time, promptly distinguish required signal and noise, get final product and only handle required signal, and can be at the beginning the time, promptly remove the noise signal, and after all signals must being input in the filter circuit, more all signals are handled, to distinguish required signal and noise.So how to seek a kind of sound signal processing method, and can be after telling sounding source of sound signal and background noise signal, to remove the background noise signal, and only sounding source of sound signal is processed, with solve now be problem to be solved with carrying out way of signal process in all signal input filter circuits again.
In order to solve the problem that above-mentioned prior art method produces, and the working method that will carry out the signal processing in all signal input filter circuits again of prior art method, we have adopted a kind of sound signal processing method, method of the present invention can need not all signals are input in the filter circuit to carry out the signal processing, but directly after the reception audio unit receives all sound signals, utilize the phase change and the skew of sound signal with identification sound signal device, signal oscillator intensity and by the different qualities of the caused frequency shift of Du Bule effect, and tell sounding source of sound signal and background noise signal, identification sound signal device will be eliminated the background noise signal and only sounding source of sound signal be passed to the sound signal processing unit, and the sound signal processing unit will be done processing and amplifying to sounding source of sound signal, can overcome the mode that above-mentioned prior art method is taked, and only sounding source of sound signal be done processing and amplifying.
Summary of the invention and purpose:
Main purpose of the present invention is to provide a kind of sound signal processing method, can be applicable to comprise in the signal processing apparatus that receives sound signal device, identification sound signal device and sound signal processing unit, via phase change and skew, signal oscillator intensity and the caused frequency shift of Du Bule effect of differentiating sound signal, and eliminate the background noise signal only sounding source of sound signal is done processing and amplifying.
Another object of the present invention is to provide a kind of sound signal processing method, can be applicable to comprise in the signal processing apparatus that receives sound signal device, identification sound signal device and sound signal processing unit, via phase change and skew, signal oscillator intensity and the caused frequency shift of Du Bule effect of differentiating sound signal, utilize identification sound signal device and pick out sounding source of sound signal and noise signal.
Another purpose of the present invention is to provide a kind of sound signal processing method, can be applicable to comprise in the signal processing apparatus that receives sound signal device, identification sound signal device and sound signal processing unit, via phase change and skew, signal oscillator intensity and the caused frequency shift of Du Bule effect of differentiating sound signal, the identification sound signal only is sent to the sound signal processing unit with sounding source of sound signal after being installed on and picking out sounding source of sound signal and noise signal.
Another purpose of the present invention is to provide a kind of sound signal processing method, can be applicable to comprise in the signal processing apparatus that receives sound signal device, identification sound signal device and sound signal processing unit, via phase change and skew, signal oscillator intensity and the caused frequency shift of Du Bule effect of differentiating sound signal, in the sound signal processing unit, handle the sounding source of sound signal that comes via identification sound signal device.
A further object of the present invention is to provide a kind of sound signal processing method, can be applicable to comprise reception sound signal device, in the signal processing apparatus of identification sound signal device and sound signal processing unit, via phase change and the skew of differentiating sound signal, signal oscillator intensity and the caused frequency shift of Du Bule effect, after receiving sound signal device reception sounding source of sound signal and noise signal, utilize identification sound signal device to tell different signals and eliminate the background noise signal, and the enable voice signal process device is done processing and amplifying to the sounding source of sound signal that comes via identification sound signal device.
According to above-described purpose, the invention provides a kind of sound signal processing method of novelty, can be applicable to comprise in the signal processing apparatus that receives sound signal device, identification sound signal device and sound signal processing unit, utilize the phase change of differentiating sound signal and skew, signal oscillator intensity and respectively sounding source of sound signal and background noise signal are processed by the caused frequency change of Du Bule effect.
At first, receive the sound signal device and will receive all sound signals, also or adjust and receive the sound signal that assigned direction was transmitted that the sound signal device will receive with selection, these a little sound signals comprise sounding source of sound signal and background noise signal.And then, because sounding source of sound signal and background noise signal have the characteristic of different phase places, amplitude and frequency, identification sound signal device is put up with the different qualities of different signals, and the sound signal that is received is differentiated, judged, utilize phase change and skew, signal oscillator intensity and the caused frequency shift of Du Bule effect of sound signal, and tell sounding source of sound signal and background noise signal.After waiting to tell sounding source of sound signal and background noise signal, identification sound signal device will be eliminated the background noise signal, and only sounding source of sound signal will be sent to the sound signal processing unit.And then the sound signal processing unit will only be done processing and amplifying to sounding source of sound signal, and not need to utilize filter circuit to filter the background noise signal.When utilizing this method, receive all sound signals via receiving the sound signal device, also or adjust to receive the sound signal that assigned direction transmitted of sound signal device to select to receive, and utilize identification sound signal device and determine sounding source of sound signal and background noise signal, to be identified go out and remove the background noise signal after, re-use the sound signal processing unit and come sounding source of sound signal is done processing and amplifying.
Remove the mode of noise in the prior art method, all need utilize filter circuit, to voltage signal also or current signal handle, with allow more than the characteristic frequency or following voltage signal also or current signal pass through, maybe can allow in the specific frequency range voltage signal also or current signal pass through, to distinguish required signal and noise signal.In filter circuit, utilize voltage signal also or different phase places, amplitude and the frequency characteristic of current signal, via filter circuit all signals that are input in this filter circuit are handled, to tell noise and required signal.When utilizing known techniques, can't be when receiving all signals at the beginning, promptly distinguish required signal and noise with the characteristic of signal, and required signal can't only be handled and all signals that must will contain required signal and noise are input in the filter circuit, again all signals are handled, to distinguish required signal and noise.And when using this method, be phase change and skew, signal oscillator intensity and the caused frequency shift of Du Bule effect of differentiating sound signal, after waiting to differentiate and removing the background noise signal, only sounding source of sound signal is processed.Receive all sound signals via receiving the sound signal device, also or adjust to receive the sound signal that assigned direction transmitted of sound signal device to select to receive, and utilize identification sound signal device and determine sounding source of sound signal and background noise signal, to be identified go out and remove the background noise signal after, re-use the sound signal processing unit and come sounding source of sound signal is done processing and amplifying.
The diagram summary:
For above and other objects of the present invention, feature, advantage can be become apparent, will lift a preferred embodiment, and cooperate appended diagram, describe embodiments of the invention in detail, appended graphic content Description is as follows:
Fig. 1 is a system block diagrams, wherein the fundamental system organizational structure of the signal processing apparatus of display application sound signal processing method of the present invention;
Fig. 2 is an operation workflow figure, wherein display application sound signal processing method of the present invention in the signal processing apparatus of Fig. 1 removal background noise signal and only sounding source of sound signal is done the process program of processing and amplifying;
Fig. 3 is the operation workflow figure of an embodiment of the system of presentation graphs 1, display application sound signal processing method of the present invention wherein, change removal background noise signal with the out of phase of differentiating sound signal, and only sounding source of sound signal is done the process program of processing and amplifying with skew;
Fig. 4 is the operation workflow figure of another embodiment of the system of presentation graphs 1, display application sound signal processing method of the present invention wherein, remove the background noise signal with the various amplitude of differentiating sound signal, and only sounding source of sound signal is done the process program of processing and amplifying; And
Fig. 5 is the operation workflow figure of an embodiment again of the system of presentation graphs 1, display application sound signal processing method of the present invention wherein, determine owing to the caused frequency shift of Du Bule effect, and remove the background noise signal, and only sounding source of sound signal is done the process program of processing and amplifying.
Embodiment describes in detail:
See also Fig. 1, wherein the fundamental system organizational structure of the signal processing apparatus of display application sound signal processing method of the present invention.As shown in Figure 1, this signal processing apparatus 1 comprises reception sound signal device 11, identification sound signal device 12 and sound signal processing unit 13.In this signal processing apparatus 1, receive sound signal device 11 and be coupled to identification sound signal device 12, and identification sound signal device 12 is coupled to sound signal processing unit 13 again.
Receive sound signal device 11 and comprise left radio reception parts 111 and right radio reception parts 112, receive sound signal device 11 reception is comprised all sound signals of sounding source of sound signal and background noise signal, also or adjust the sound signal that assigned direction transmitted of reception sound signal device 11 that comprises left radio reception parts 111 and right radio reception parts 112 to select to receive.Receive sound signal device 11 received sound signal is sent to identification sound signal device 12, and in identification sound signal device 12, the characteristic of out of phase, amplitude and the frequency that will have with regard to sounding source of sound signal and background noise signal, and the sound signal that is received is differentiated, judged, utilize phase change and skew, signal oscillator intensity and the caused frequency shift of Du Bule effect of sound signal, and tell sounding source of sound signal and background noise signal.Identification sound signal device 12 will be eliminated the background noise signal, and only sounding source of sound signal will be sent to sound signal processing unit 13.And sound signal processing unit 13 will only be done processing and amplifying to sounding source of sound signal, and not need to utilize filter circuit to filter the background noise signal.
When doing processing and amplifying at execution removal background noise signal and with sounding source of sound signal, at first, the reception sound signal device 11 that comprises left radio reception parts 111 and right radio reception parts 112, reception is comprised all sound signals of sounding source of sound signal and background noise signal, also or adjust the sound signal that assigned direction transmitted of reception sound signal device that comprises left radio reception parts 111 and right radio reception parts 112 to select to receive.And then, because sounding source of sound signal and background noise signal have the characteristic of different phase places, amplitude and frequency, identification sound signal device 12 is put up with the different qualities of different signals, and the sound signal that is received is differentiated, judged, utilize phase change and skew, signal oscillator intensity and the caused frequency shift of Du Bule effect of sound signal, and tell sounding source of sound signal and background noise signal.After waiting to tell sounding source of sound signal and background noise signal, identification sound signal device 12 will be eliminated the background noise signal, and only sounding source of sound signal will be sent to sound signal processing unit 13.Again and, sound signal processing unit 13 will only be done processing and amplifying to sounding source of sound signal, and not need to utilize filter circuit to filter the background noise signal.Receive all sound signals via the reception sound signal device 11 that comprises left radio reception parts 111 and right radio reception parts 112, also or adjust the sound signal that assigned direction transmitted of reception sound signal device comprise left radio reception parts 111 and right radio reception parts 112 to select to receive, and utilize identification sound signal device 12 and determine sounding source of sound signal and background noise signal, to be identified go out and remove the background noise signal after, re-use sound signal processing unit 13 and come sounding source of sound signal is done processing and amplifying, will finish the program that this handles sound signal.
Fig. 2 is the operation workflow figure of an embodiment of the system of presentation graphs 1, and wherein display application sound signal processing method of the present invention is only done the process program of processing and amplifying to sounding source of sound signal to remove the background noise signal.
As shown in FIG., at first when step 2, the reception sound signal device 11 that comprises left radio reception parts 111 and right radio reception parts 112, the all sound signals that reception comprised sounding source of sound signal and background noise signal, also or adjust the sound signal that assigned direction transmitted of reception sound signal device 11 comprise left radio reception parts 111 and right radio reception parts 112, and enter step 3 to select to receive.
In step 3, identification sound signal device 12 will be differentiated, judge the sound signal that is received, to determine sounding source of sound signal and background noise signal.Because sounding source of sound signal and background noise signal have the characteristic of different phase places, amplitude and frequency, identification sound signal device 12 is put up with the different qualities of different signals, and the sound signal that is received is differentiated, judged, utilize phase change and skew, signal oscillator intensity and the caused frequency shift of Du Bule effect of sound signal, and tell sounding source of sound signal and background noise signal.
In step 5, treat that sound signal processing unit 13 is received sounding source of sound signal after, sounding source of sound signal is carried out processing and amplifying, and sound signal processing unit 13 does not need to utilize filter circuit to filter the background noise signal.
Fig. 3 is the operation workflow figure of an embodiment of the system of presentation graphs 1, display application sound signal processing method of the present invention wherein, change removal background noise signal with the out of phase of differentiating sound signal, and only sounding source of sound signal is done the process program of processing and amplifying with skew.In this embodiment, sounding source of sound signal and background noise signal have different phase places, and the out of phase that identification sound signal device 12 is put up with different signals is differentiated, judged.Can comply with the sound signal of being received phase difference (for example phase place in advance also or delay) and adjust left radio reception parts 111 and right radio reception parts 112, and make the reception sound signal device 11 that comprises left radio reception parts 111 and right radio reception parts 112 can select to receive the sound signal that certain direction (assigned direction) is transmitted.
At first when step 21, the reception sound signal device 11 that comprises left radio reception parts 111 and right radio reception parts 112, the all sound signals that reception comprised sounding source of sound signal and background noise signal, also maybe can comply with the sound signal of being received phase difference (for example phase place in advance also or delay) and adjust left radio reception parts 111 and right radio reception parts 112, and make the reception sound signal device 11 that comprises left radio reception parts 111 and right radio reception parts 112 can select to receive the sound signal that certain direction (assigned direction) is transmitted, and enter step 22.
In step 22, identification sound signal device 12 will be differentiated, judge the sound signal that is received, to determine sounding source of sound signal and background noise signal.Because sounding source of sound signal and background noise signal have different phase places, identification sound signal device 12 is put up with the out of phase characteristic of different signals, and the sound signal that is received is differentiated, judged, utilize the phase change of sound signal and skew and tell sounding source of sound signal and background noise signal.
In step 24, treat that sound signal processing unit 13 is received sounding source of sound signal after, sounding source of sound signal is carried out processing and amplifying, and sound signal processing unit 13 does not need to utilize filter circuit to filter the background noise signal.
Fig. 4 is the operation workflow figure of another embodiment of the system of presentation graphs 1, display application sound signal processing method of the present invention wherein, remove the background noise signal with the various amplitude of differentiating sound signal, and only sounding source of sound signal is done the process program of processing and amplifying.In this embodiment, sounding source of sound signal and background noise signal have different amplitudes, and the various amplitude that identification sound signal device 12 is put up with different signals is differentiated, judged.
At first when step 31, the reception sound signal device 11 that comprises left radio reception parts 111 and right radio reception parts 112, the all sound signals that reception comprised sounding source of sound signal and background noise signal, also or adjust the sound signal that assigned direction transmitted of reception sound signal device 11 comprise left radio reception parts 111 and right radio reception parts 112, and enter step 32 to select to receive.
In step 32, identification sound signal device 12 will be differentiated, judge the sound signal that is received, to determine sounding source of sound signal and background noise signal.Because sounding source of sound signal and background noise signal have different amplitudes, identification sound signal device 12 is put up with the various amplitude characteristic of different signals, and the sound signal that is received is differentiated, judged, utilize the various amplitude of sound signal and tell sounding source of sound signal and background noise signal.
Step 33, after sound signal device 12 to be identified determines sounding source of sound signal and background noise signal, identification sound signal device 12 will be removed the background noise signal, and only sounding source of sound signal will be sent to sound signal processing unit 13, and enter step 34.
In step 34, treat that sound signal processing unit 13 is received sounding source of sound signal after, sounding source of sound signal is carried out processing and amplifying, and sound signal processing unit 13 does not need to utilize filter circuit to filter the background noise signal.Fig. 5 is the operation workflow figure of an embodiment again of the system of presentation graphs 1, display application sound signal processing method of the present invention wherein, determine owing to the caused frequency shift of Du Bule effect, and remove the background noise signal, and only sounding source of sound signal is done the process program of processing and amplifying.In this embodiment, sounding source of sound signal and background noise signal have different movement velocitys, thereby in various degree the Du Bule effect of having of the signal processing apparatus of the method for using removal noise signal of the present invention, and identification sound signal device 12 is put up with the Du Bule effect in various degree of different signals and is differentiated, judges.
At first when step 41, the reception sound signal device 11 that comprises left radio reception parts 111 and right radio reception parts 112, the all sound signals that reception comprised sounding source of sound signal and background noise signal, also or adjust the sound signal that assigned direction transmitted of reception sound signal device 11 comprise left radio reception parts 111 and right radio reception parts 112, and enter step 42 to select to receive.
In step 42, identification sound signal device 12 will be differentiated, judge the sound signal that is received, to determine sounding source of sound signal and background noise signal.Because sounding source of sound signal and background noise signal have different movement velocitys, thereby in various degree the Du Bule effect of having of the signal processing apparatus of using sound signal processing method of the present invention, and identification sound signal device 12 is put up with the Du Bule effect in various degree of different signals and is differentiated, judges, utilize sound signal in various degree by the caused frequency shift of Du Bule effect, and tell sounding source of sound signal and background noise signal.
Step 43, after sound signal device 12 to be identified determines sounding source of sound signal and background noise signal, identification sound signal device 12 will be removed the background noise signal, and only sounding source of sound signal will be sent to sound signal processing unit 13, and enter step 44.
In step 44, treat that sound signal processing unit 13 is received sounding source of sound signal after, sounding source of sound signal is carried out processing and amplifying, and sound signal processing unit 13 does not need to utilize filter circuit to filter the background noise signal.Comprehensive above embodiment and method, we can obtain sound signal processing method of the present invention, are utilize to differentiate the phase change of sound signal and skew, signal oscillator intensity and respectively sounding source of sound signal and background noise signal are processed by the caused frequency shift of Du Bule effect.Receive the sound signal device and will receive all sound signals, also or adjust and receive the sound signal that assigned direction was transmitted that the sound signal device will receive with selection, these a little sound signals comprise sounding source of sound signal and background noise signal.And then, because sounding source of sound signal and background noise signal have the characteristic of different phase places, amplitude and frequency, identification sound signal device is put up with the different qualities of different signals, and the sound signal that is received is differentiated, judged, utilize phase change and skew, signal oscillator intensity and the caused frequency shift of Du Bule effect of sound signal, and tell sounding source of sound signal and background noise signal.After waiting to tell sounding source of sound signal and background noise signal, identification sound signal device will be eliminated the background noise signal, and only sounding source of sound signal will be sent to the sound signal processing unit.And then the sound signal processing unit will only be done processing and amplifying to sounding source of sound signal, and not need to utilize filter circuit to filter the background noise signal.
When utilizing this method, receive all sound signals via receiving the sound signal device, also or adjust to receive the sound signal that assigned direction transmitted of sound signal device to select to receive, and utilize identification sound signal device and determine sounding source of sound signal and background noise signal, to be identified go out and remove the background noise signal after, re-use the sound signal processing unit and come sounding source of sound signal is done processing and amplifying.The advantage of this sound signal processing method has:
1. change via the out of phase of differentiating sound signal, and pick out sounding source of sound signal and noise signal, and eliminate the background noise signal and only sounding source of sound signal is done processing and amplifying.
2. change via the various amplitude of differentiating sound signal, and pick out sounding source of sound signal and noise signal, and eliminate the background noise signal and only sounding source of sound signal is done processing and amplifying.
3. via the caused frequency shift of Yin Dubule effect of differentiating sound signal, and pick out sounding source of sound signal and noise signal, and eliminate the background noise signal and only sounding source of sound signal is done processing and amplifying.
4. directly utilize the phase change and the skew of sound signal, the different qualities of signal oscillator intensity and the caused frequency of Du Bule effect, receive the sound signal device in comprising, in the signal processing apparatus of identification sound signal device and sound signal processing unit, via phase change and the skew of differentiating sound signal, signal oscillator intensity and the caused frequency shift of Du Bule effect, after receiving sound signal device reception sounding source of sound signal and noise signal, utilize identification sound signal device to tell different signals and eliminate the background noise signal, and the enable voice signal process device is done processing and amplifying to the sounding source of sound signal that comes via identification sound signal device.
The above is preferred embodiment of the present invention only, is not in order to limit scope of the present invention; All other do not break away from the equivalence of being finished under the disclosed spirit and changes or modification, all should be included in the claim scope of present patent application.
Claims (10)
1. sound signal processing method, apply to comprise in the signal processing apparatus that receives sound signal device, identification sound signal device and sound signal processing unit, it is characterized in that, need not utilize filter circuit to filter the background noise signal, but utilize the different physical characteristics of sounding source of sound signal and background noise signal, remove noise and handle sounding source of sound signal, this sound signal processing method comprises following program:
(1) receives all sound signals that the sound signal device comprises reception sounding source of sound signal and background noise signal;
(2) identification sound signal device will be differentiated, judge the sound signal that is received, to determine sounding source of sound signal and background noise signal;
(3) identification sound signal device will be removed the background noise signal, and only sounding source of sound signal will be sent to the sound signal processing unit; And
(4) the sound signal processing unit carries out processing and amplifying to sounding source of sound signal.
2. a kind of sound signal processing method according to claim 1 is characterized in that: step (1) further comprises: adjust and receive the sound signal that comprise sounding source of sound signal and background noise signal that assigned direction transmitted of sound signal device to select to receive.
3. a kind of sound signal processing method according to claim 1, it is characterized in that: step (2) further comprises: identification sound signal device is put up with the different qualities of different signals, and the sound signal that is received is differentiated, judged, utilize the different phase characteristic of sound signal, and tell sounding source of sound signal and background noise signal.
4. a kind of sound signal processing method according to claim 1 is characterized in that: carrying out step (3) preceding comprising: adjust and receive the sound signal that comprise sounding source of sound signal and background noise signal that assigned direction transmitted of sound signal device to select to receive; Afterwards, identification sound signal device is put up with the different qualities of different signals, and the sound signal that is received is differentiated, judged, utilizes the different phase characteristic of sound signal, and tells sounding source of sound signal and background noise signal.
5. a kind of sound signal processing method according to claim 3, it is characterized in that: identification sound signal device is put up with the different qualities of different signals, and to the sound signal that is received differentiate, when judging, also can utilize the different oscillator intensity characteristic of sound signal, and tell sounding source of sound signal and background noise signal.
6. a kind of sound signal processing method according to claim 1 is characterized in that: carrying out step (3) preceding comprising: adjust and receive the sound signal that comprise sounding source of sound signal and background noise signal that assigned direction transmitted of sound signal device to select to receive; Afterwards, identification sound signal device is put up with the different qualities of different signals, and the sound signal that is received is differentiated, judged, utilizes the different oscillator intensity characteristic of sound signal, and tells sounding source of sound signal and background noise signal.
7. a kind of sound signal processing method according to claim 3, it is characterized in that: wherein, identification sound signal device is put up with the different qualities of different signals, and to the sound signal that is received differentiate, when judging, also can utilize the different of sound signal, and tell sounding source of sound signal and background noise signal by the caused frequency shift characteristic of Du Bule effect.
8. a kind of sound signal processing method according to claim 1, it is characterized in that: wherein, carrying out step (3) preceding comprising: adjust and receive the sound signal that comprise sounding source of sound signal and background noise signal that assigned direction transmitted of sound signal device to select to receive; Afterwards, identification sound signal device is put up with the different qualities of different signals, and the sound signal that is received is differentiated, judged, utilize the different of sound signal, and tell sounding source of sound signal and background noise signal by the caused frequency shift characteristic of Du Bule effect.
9. a kind of sound signal processing method according to claim 3, it is characterized in that: this identification sound signal device is put up with the different qualities of different signals, and the sound signal that is received is differentiated, judged, utilize phase change and skew, signal oscillator intensity and the caused frequency shift of Du Bule effect of sound signal, and tell sounding source of sound signal and background noise signal.
10. a kind of sound signal processing method according to claim 4, it is characterized in that: this identification sound signal device is put up with the different qualities of different signals, and to the sound signal that is received differentiate, when judging, also can utilize phase change and skew, signal oscillator intensity and the caused frequency shift of Du Bule effect of sound signal, and tell sounding source of sound signal and background noise signal.
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| CN104378570A (en) * | 2014-09-28 | 2015-02-25 | 小米科技有限责任公司 | Sound recording method and device |
| CN105578350A (en) * | 2015-12-29 | 2016-05-11 | 太仓美宅姬娱乐传媒有限公司 | Method for processing image sound |
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