CN106911996A - The detection method of microphone state, device and terminal device - Google Patents
The detection method of microphone state, device and terminal device Download PDFInfo
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- CN106911996A CN106911996A CN201710123466.4A CN201710123466A CN106911996A CN 106911996 A CN106911996 A CN 106911996A CN 201710123466 A CN201710123466 A CN 201710123466A CN 106911996 A CN106911996 A CN 106911996A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R29/00—Monitoring arrangements; Testing arrangements
- H04R29/004—Monitoring arrangements; Testing arrangements for microphones
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Abstract
The present invention proposes a kind of detection method of microphone state, device and terminal device, wherein, method includes：The audio signal of capture setting microphone on the terminal device, according to corresponding first energy of the audio signal medium-high frequency frequency range and corresponding second energy of low frequency band, the current state to the microphone is detected.In the present invention each self-corresponding energy of low-and high-frequency frequency range is extracted from audio signal, the energy of low-and high-frequency frequency range is then based on to detect the current state of microphone, the accuracy of detection that whether blocked state is in microphone can be improved, because accuracy of detection improves the probability that can reduce the frequent switching microphone on the mobile terminal of dual microphone.
Description
Technical field
Set the present invention relates to field of terminal technology, more particularly to a kind of detection method of microphone state, device and terminal
It is standby.
Background technology
During user carries out voice call using mobile terminal, the microphone (MIC) on mobile terminal is sometimes
Can be blocked by the finger of user is unconscious.When the MIC on mobile terminal is in blocked state, the user of the other end may listen
Less than or do not hear the sound of user, influence the quality of voice call.
At present, rely primarily on and increase on mobile terminals MIC quantity and solve the above problems, for example, not only it is mobile eventually
The bottom at end sets a MIC, can also set a MIC on top or side.When there is a MIC to be blocked by finger or
When occurring abnormal, then it is switched to another MIC from the MIC for blocking and is operated.Specifically, can be to two sounds of MIC collections
The size of frequency signal is compared, if the signal magnitude of the main MIC of acquiescence is illustrated at main MIC less than the signal magnitude from MIC
It is operated, it is necessary to be switched to from MIC in blocked state.
And determine that main MIC is in blocked state, frequent switching easily occurs by comparing the signal magnitude of principal and subordinate MIC
The phenomenon of MIC.For example, user using main MIC when being conversed, possible user occurs in that the of short duration situation for blocking main MIC, base
In above-mentioned detection method, will be switched to from MIC and be conversed.And actually user soon removes finger from main MIC,
So will again detect that the signal magnitude of main MIC is more than from MIC, then switch back into again from MIC.
The content of the invention
It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.
Therefore, first purpose of the invention is to propose a kind of detection method of microphone state, to realize improving wheat
The accuracy rate of gram wind state-detection, for solving existing to determine that main MIC is in by comparing the signal magnitude of principal and subordinate MIC and block
State, has easily frequent switching MIC occur.
Second object of the present invention is the detection means for proposing microphone state.
Third object of the present invention is to propose a kind of terminal device.
It is that, up to above-mentioned purpose, first aspect present invention embodiment proposes a kind of detection method of microphone state, including：
The audio signal of capture setting microphone on the terminal device；
According to corresponding first energy of the audio signal medium-high frequency frequency range and corresponding second energy of low frequency band, to institute
The current state for stating microphone is detected.
The detection method of the microphone state of the embodiment of the present invention, by capture setting microphone on the terminal device
Audio signal, the means that can be analyzed with feature based extract each self-corresponding energy of low-and high-frequency frequency range from audio signal, then
The current state of microphone is detected based on the energy of low-and high-frequency frequency range.When the ratio of low-and high-frequency energy is less than predetermined threshold value,
Can detect that microphone is currently at blocked state.In the present embodiment, based on the energy that the signature analysis to audio signal is obtained
Amount, can improve the accuracy of detection that whether blocked state is in microphone, can be reduced double because accuracy of detection improves
The probability of frequent switching microphone on the mobile terminal of MIC.
In addition, the detection method of the microphone state of the embodiment of the present invention, also with following additional technical characteristic：
In one embodiment of the invention, it is when the single microphone is provided with the terminal device, then described
According to corresponding first energy of the audio signal medium-high frequency frequency range and corresponding second energy of low frequency band, to the microphone
Current state detected, including：
Spectrum analysis is carried out to the audio signal, the sound spectrograph of the audio signal is obtained；
First energy and second energy are extracted from the sound spectrograph；
If the ratio between first energy and second energy is less than predetermined threshold value, the Mike is detected
Wind is currently at blocked state.
In one embodiment of the invention, it is described to detect that the microphone is currently at after blocked state, including：
Gain and/or the numeral of amplifier in the terminal device sound intermediate frequency signal processing module are adjusted according to the ratio
Filter response.
In one embodiment of the invention, when two microphones are provided with the terminal device, wherein, described two
One is main microphon in individual microphone, one be from microphone, then it is described according to audio signal medium-high frequency frequency range correspondence
The first energy and corresponding second energy of low frequency band, the current state to the microphone detects, including：
The audio signal to the main microphon carries out spectrum analysis, obtains institute's predicate spectrum of the main microphon
Figure；
From the sound spectrograph of the main microphon, first energy of the main microphon and the main wheat are extracted
Second energy of gram wind；
If the ratio of second energy of first energy of the main microphon and the main microphon is less than
Predetermined threshold value, then detect that the main microphon is currently at blocked state.
In one embodiment of the invention, the audio signal to the main microphon carries out spectrum analysis,
Before obtaining the sound spectrograph of the main microphon, also include：
Obtain the first signal intensity of the audio signal of the main microphon, and the sound from microphone
The secondary signal intensity of frequency signal；
Compare first signal intensity and the secondary signal intensity, determine first signal intensity and described second
The difference of signal intensity is more than or equal to default value.
In one embodiment of the invention, methods described also includes：
If the secondary signal intensity is less than default value and persistently presets with the difference of first signal intensity
It is long, then detect that the main microphon is currently at blocked state.
In one embodiment of the invention, it is described to detect that the Mike is currently at after blocked state, including：
Continue to provide the user service from microphone described in being switched to.
In one embodiment of the invention, it is described be switched to it is described continue to provide the user service from microphone after,
Including：
Adjust the gain of amplifier in the audio-frequency signal processing module in the terminal and/or the frequency response spy of digital filter
Property.
It is that, up to above-mentioned purpose, second aspect present invention embodiment proposes a kind of detection means of microphone state, including：
Acquisition module, for the audio signal of capture setting microphone on the terminal device；
Detection module, for corresponding according to corresponding first energy of the audio signal medium-high frequency frequency range and low frequency band
Second energy, the current state to the microphone is detected.
The detection means of the microphone state of the embodiment of the present invention, by capture setting microphone on the terminal device
Audio signal, the means that can be analyzed with feature based extract each self-corresponding energy of low-and high-frequency frequency range from audio signal, then
The current state of microphone is detected based on the energy of low-and high-frequency frequency range.When the ratio of low-and high-frequency energy is less than predetermined threshold value,
Can detect that microphone is currently at blocked state.In the present embodiment, based on the energy that the signature analysis to audio signal is obtained
Amount, can improve the accuracy of detection that whether blocked state is in microphone, can be reduced double because accuracy of detection improves
The probability of frequent switching microphone on the mobile terminal of MIC.
In addition, the detection means of the microphone state of the embodiment of the present invention, also with following additional technical characteristic：
In one embodiment of the invention, it is when the single microphone is provided with the terminal device, then described
Detection module, including：
First spectral analysis unit, for carrying out spectrum analysis to the audio signal, obtains the language of the audio signal
Spectrogram；
First extraction unit, for extracting first energy and second energy from the sound spectrograph；
First detection unit, if being less than default threshold for the ratio between first energy and second energy
Value, then detect that the microphone is currently at blocked state.
In one embodiment of the invention, described device also includes：
First adjusting module, for amplifying according in the ratio adjustment terminal device sound intermediate frequency signal processing module
The gain of device and/or the Frequency Response of digital filter.
In one embodiment of the invention, when being provided with two microphones on the terminal device, wherein, it is described two
One is main microphon in microphone, one be from microphone when, then the detection module, including：
Second spectral analysis unit, spectrum analysis is carried out for the audio signal to the main microphon, obtains institute
State the sound spectrograph of main microphon；
Second extraction unit, for from the sound spectrograph of the main microphon, extracting the described of the main microphon
Second energy of the first energy and the main microphon；
Second detection unit, if described of first energy and the main microphon for the main microphon
The ratio of two energy is less than predetermined threshold value, then detect that the main microphon is currently at blocked state.
In one embodiment of the invention, described device also includes：
Acquisition module, the first signal intensity of the audio signal for obtaining the main microphon, and it is described from
The secondary signal intensity of the audio signal of microphone；
Determining module, for comparing first signal intensity and the secondary signal intensity, determines first signal
Intensity is more than or equal to default value with the difference of the secondary signal intensity.
In one embodiment of the invention, second detection unit, if be additionally operable to the secondary signal intensity with
The difference of first signal intensity is less than default value and lasting preset duration, then detect that the main microphon is currently at
Blocked state.
In one embodiment of the invention, described device also includes：
Handover module, described continues to provide the user service for being switched to from microphone.
In one embodiment of the invention, described device also includes：
Second adjusting module, for adjust amplifier in the audio-frequency signal processing module in the terminal gain and/or
The Frequency Response of digital filter.
It is that, up to above-mentioned purpose, third aspect present invention embodiment proposes another terminal device, including：
Housing and the processor in the housing, memory and at least one microphone, wherein, the processor leads to
Cross and read the executable program code that stores in the memory and run program corresponding with the executable program code, with
For performing following steps：
The audio signal of capture setting microphone on the terminal device；
According to corresponding first energy of the audio signal medium-high frequency frequency range and corresponding second energy of low frequency band, to institute
The current state for stating microphone is detected.
The terminal device of the embodiment of the present invention, by the audio signal of capture setting microphone on the terminal device, can
Each self-corresponding energy of low-and high-frequency frequency range is extracted from audio signal with the means that feature based is analyzed, height is then based on again and again
The energy of section detects the current state of microphone.When the ratio of low-and high-frequency energy is less than predetermined threshold value, wheat can be detected
Gram wind is currently at blocked state.In the present embodiment, based on the energy that the signature analysis to audio signal is obtained, can improve right
Whether microphone is in the accuracy of detection of blocked state, because accuracy of detection improves the mobile terminal that can be reduced in double MIC
The probability of upper frequent switching microphone.
The additional aspect of the present invention and advantage will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by practice of the invention.
Brief description of the drawings
The above-mentioned and/or additional aspect of the present invention and advantage will become from the following description of the accompanying drawings of embodiments
Substantially and be readily appreciated that, wherein：
A kind of schematic flow sheet of the detection method of microphone state that Fig. 1 is provided by the embodiment of the present invention；
The schematic flow sheet of the detection method of another microphone state that Fig. 2 is provided by the embodiment of the present invention；
A kind of schematic flow sheet of the detection method of microphone state that Fig. 3 is provided by the embodiment of the present invention；
A kind of structural representation of the detection means of microphone state that Fig. 4 is provided by the embodiment of the present invention；
The structural representation of the detection means of another microphone state that Fig. 5 is provided by the embodiment of the present invention；
Fig. 6 is the structural representation of the detection means of another microphone state provided in an embodiment of the present invention；
A kind of structural representation of terminal device that Fig. 7 is provided by the embodiment of the present invention.
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from start to finish
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
It is exemplary to scheme the embodiment of description, it is intended to for explaining the present invention, and be not considered as limiting the invention.
Below with reference to the accompanying drawings detection method, device and the terminal device of the microphone state of the embodiment of the present invention described.
A kind of schematic flow sheet of the detection method of microphone state that Fig. 1 is provided by the embodiment of the present invention.The present invention
The detection method of the microphone state of embodiment, can be applied to various devices or terminal device, such as panel computer, notebook electricity
Brain, PC, smart mobile phone etc..As shown in figure 1, the detection method of the microphone state is comprised the following steps：
The audio signal of S101, capture setting microphone on the terminal device.
In the present embodiment, voice call, Video chat are carried out based on terminal device in user or Mike is needed to use
During the application program of wind, microphone is in opening, can be with the audio signal of capture setting microphone on the terminal device.
S102, according to corresponding first energy of audio signal medium-high frequency frequency range and corresponding second energy of low frequency band, it is right
The current state of microphone is detected.
After audio signal is collected, signature analysis can be carried out to audio signal, audio is extracted from audio signal
The frequecy characteristic of signal, can get corresponding first energy of high-frequency band, and corresponding second energy of low frequency band.
The first energy and the second energy are got, the current state of microphone can be detected according to first energy and the second energy.
Generally, high-frequency band is the frequency range of more than 800hz, and the frequency range of low frequency band is 20hz-800hz.
Enter one, obtain the ratio between corresponding first energy of high-frequency band and corresponding second energy of low frequency band
Value.In practical application, in order to ensure the speech quality of microphone, often by the energy and low frequency of audio signal medium-high frequency frequency range
Ratio between the energy of frequency range is set to 1：1, i.e., 1：1 is predetermined threshold value.And when MIC is by the blocking of user in practical application
Afterwards, the signal of high-frequency band can significantly be decayed.Therefore, when the ratio between the first energy and the second energy is less than default threshold
During value, then the corresponding signal attenuation of high-frequency band of microphone can be determined, illustrate that the microphone is in abnormality, the wheat
Gram wind may be sheltered from blocked state by the finger of user.If the ratio between the first energy and the second energy is not
Less than predetermined threshold value, then illustrate that microphone is in normal operating condition.
The detection method of microphone state provided in an embodiment of the present invention, capture setting microphone on the terminal device
Audio signal, the means that can be analyzed with feature based extract each self-corresponding energy of low-and high-frequency frequency range from audio signal, then
The current state of microphone is detected based on the energy of low-and high-frequency frequency range.When the ratio of low-and high-frequency energy is less than predetermined threshold value,
Can detect that microphone is currently at blocked state.In the present embodiment, based on the energy that the signature analysis to audio signal is obtained
Amount, can improve the accuracy of detection that whether blocked state is in microphone, can be reduced double because accuracy of detection improves
The probability of frequent switching microphone on the mobile terminal of MIC.
Fig. 2 is the schematic flow sheet of the detection method of another microphone state provided in an embodiment of the present invention.In terminal
Equipment is provided with a scene for microphone, as shown in Fig. 2 the detection method of the microphone state includes：
The audio signal of S201, capture setting microphone on the terminal device.
S202, spectrum analysis is carried out to audio signal, obtain the sound spectrograph of audio signal.
Specifically, can be using Fast Fourier Transform (FFT) (Fast Fourier Transform, abbreviation FFT) to collecting
Audio signal carry out spectrum analysis, so as to obtain the sound spectrograph of audio signal.Wherein, the abscissa of sound spectrograph is audio signal
Corresponding time, the ordinate of sound spectrograph is the frequency component contained by audio signal, and the coordinate point value of sound spectrograph is that audio is believed
Number energy value.
S203, corresponding first energy of extraction high-frequency band and corresponding second energy of low frequency band from sound spectrograph.
Specifically, the first energy of the high-frequency band of the audio signal of microphone can be extracted from sound spectrograph, and
Extract the second energy of the low frequency band of microphone.After the sound spectrograph for getting audio signal, can count and exceed
Energy on 800hz each frequency, obtains the first energy of high-frequency band, every it is possible to further count 20hz~800hz
Energy on individual frequency, obtains the second energy of low frequency band.
If the ratio between S204, the first energy and the second energy is less than predetermined threshold value, detect that microphone is current
In blocked state.
After the first energy and the second energy is got, the ratio between the first energy and the second energy can be obtained, so
The ratio and predetermined threshold value are compared afterwards.In practical application after blockings of the MIC by user, the signal of high-frequency band can quilt
Significantly decay.Therefore, when the ratio between the first energy and the second energy is less than predetermined threshold value, then Mike can be determined
The corresponding signal attenuation of high-frequency band of wind, illustrates that the microphone is in abnormality, and the microphone may be by the finger of user
Shelter from blocked state.If the ratio between the first energy and the second energy is not below predetermined threshold value, illustrate
Microphone is in normal operating condition.If the ratio between the first energy and the second energy is not less than predetermined threshold value, return
Continue to detect the current state of microphone.
S205, the gain that amplifier in terminal device sound intermediate frequency signal processing module is adjusted according to ratio and/or numeral filter
The frequency response of ripple device.
When the microphone on terminal device is detected in blocked state, the current state of microphone may influence user
It is normal use, such as when user is in talking state, if microphone is in blocks state, other side can be caused to listen
The sound of clear user.In the present embodiment, due to being only provided with single microphone on the terminal device, in order to ensure that microphone can
Service is preferably provided the user, can be according to the ratio between the first energy and the second energy, to the audio in terminal device
Signal processing module is adjusted.Alternatively, sound is improved by adjusting the gain of amplifier in the audio-frequency signal processing module
The volume of sound, so that the other user can hear more clearly sound.
Alternatively, by adjusting the Frequency Response of digital filter in the audio-frequency signal processing module, can specifically wrap
The parameters such as the cut-off frequency and bandwidth of adjustment digital filter are included, such that it is able to compensating audio signal medium-high frequency frequency band signals,
So that the energy ratio of low-and high-frequency frequency range is returned near predetermined threshold value as early as possible so that the performance of Mike's wind energy is enough returned to as early as possible
Performance under unplugged state, thereby may be ensured that the experience of user.
It is alternatively possible to the gain of amplifier and numeral are filtered in audio-frequency signal processing module on adjustment terminal device simultaneously
The Frequency Response of ripple device so that detect microphone be blocked after, can be substantially improved due to block cause decay gain with
And significantly compensate the high frequency for causing to decay due to blocking.
The detection method of microphone state provided in an embodiment of the present invention, capture setting microphone on the terminal device
Audio signal, the means that can be analyzed with feature based extract each self-corresponding energy of low-and high-frequency frequency range from audio signal, then
The current state of microphone is detected based on the energy of low-and high-frequency frequency range.When the ratio of low-and high-frequency energy is less than predetermined threshold value,
Can detect that microphone is currently at blocked state.In the present embodiment, based on the energy that the signature analysis to audio signal is obtained
Amount, can improve the accuracy of detection that whether blocked state is in microphone.Further, it is single due to being set on terminal device
Microphone, in order to ensure that microphone can preferably provide the user service, can adjust Audio Signal Processing on terminal device
The Frequency Response of the gain of amplifier and/or digital filter in module so that detect microphone be blocked after, can be significantly
To be lifted cause the gain of decay due to blocking and significantly compensate and cause the high frequency of decay due to blocking, ensure that microphone
Remain able to normally use under blocked state, improve Consumer's Experience.
Fig. 3 is the schematic flow sheet of the detection method of another microphone state provided in an embodiment of the present invention.In terminal
Equipment is provided with two scenes of microphone, wherein, a microphone is main microphon, and another is from microphone.Such as
Shown in Fig. 3, the detection method of the microphone state includes：
S301, capture setting two audio signals of microphone on the terminal device.
S302, obtain main microphon audio signal the first signal intensity, and from the of the audio signal of microphone
Binary signal intensity.
Specifically, the first signal intensity of the audio signal can be extracted from the audio signal of main microphon, i.e., should
The amplitude of audio signal.Further, the secondary signal intensity of the audio signal is extracted from the audio signal of microphone, i.e.,
The amplitude of the audio signal.
S303, the difference for judging secondary signal intensity and the first signal intensity are higher than default value and lasting preset duration.
In practical application, when microphone is in the role of main microphon, the general ratio of signal intensity of the microphone is in
Signal intensity from another microphone of microphone role is big, and so the microphone in main microphon role could be by user
Sound collection after be transferred to other side.When abnormal such as blocking occurs in main microphon, the signal intensity of main microphon often declines
Subtract, the situation less than the signal intensity from microphone can occurs.
After the first signal intensity and secondary signal intensity is got, can be by the first signal intensity and secondary signal intensity
It is compared, when the first signal intensity is more than secondary signal intensity, obtains the difference of the first signal intensity and secondary signal intensity
Value.If after the first signal intensity is more than or equal to default value with the difference of secondary signal intensity, may indicate that main wheat
The signal intensity of gram wind is normal, and the main microphon is in normal operating condition, now performs S304.
Further, when the first signal intensity be less than or equal to secondary signal intensity when, obtain secondary signal intensity with
The difference of the first signal intensity.If secondary signal intensity is less than default value and continues with the difference of first signal intensity
Preset duration, illustrating the signal intensity of main microphon will be less than the signal intensity from microphone, show the appearance letter of main microphon
Number strength retrogression, main microphon is likely to be at blocked state, performs S307.
S304, the audio signal to main microphon carry out spectrum analysis, obtain the sound spectrograph of main microphon.
Specifically, can be using Fast Fourier Transform (FFT) (Fast Fourier Transform, abbreviation FFT) to collecting
The audio signal of main microphon carry out spectrum analysis, so as to obtain the sound spectrograph of the audio signal of main microphon.
S305, from the sound spectrograph of main microphon, obtain main microphon the first energy and main microphon the second energy.
After getting the sound spectrograph of main microphon, can count more than the energy on 800hz each frequency, obtain height
First energy of frequent section, it is possible to further count the energy on 20hz~800hz each frequency, obtains low frequency band
The second energy.
Whether the ratio of second energy of S306, the first energy for judging main microphon and main microphon is less than default threshold
Value.
If the ratio of the second energy of the first energy of main microphon and main microphon is less than predetermined threshold value, perform
S307；Otherwise return and continue executing with S301.
S307, detect that main microphon is currently at blocked state.
S308, to be switched to continue from microphone and provide the user service.
When detecting that main microphon is currently at blocked state, if being continuing with the main microphon provides the user clothes
Business, may cause service quality poor.In the present embodiment, due to being provided with two microphones on terminal device, can be by from wheat
Gram wind is used as main microphon, that is, to be switched to continue from microphone and provide the user service, that is to say, that by from microphone
Role switching is operated to the role of main microphon.
The gain and/or the frequency response of digital filter of amplifier in audio-frequency signal processing module in S309, adjustment terminal
Characteristic.
In actually used, two microphones set on terminal device may be respectively provided with different positions, for example, main wheat
Gram wind may be arranged on the bottom of terminal device, solve the position of user's mouth, and may be arranged on terminal device from microphone
Top.Microphone at the top of being arranged on relatively far away from, so for the microphone for being arranged on bottom, receives people from mouth
The signal of mouth is smaller, and the high frequency of signal can be lower, when be switched to continue to provide the user service from microphone after, to make
The signal of the mouth received from microphone after switching, can be with the audio signal in terminal close to the signal of main microphon before
The Frequency Response of the gain of amplifier and/or digital filter in processing module.Specific adjustment process can be found in above-described embodiment
The record of middle related content, here is omitted.
In the present embodiment, be switched to from microphone continue to provide service to user after, it is necessary to continue to from microphone
State is detected that the process of detection can be found in above-mentioned flow, and here is omitted.
In the present embodiment, the current shape based on the frequecy characteristic to audio signal and signal intensity comprehensive detection main microphon
State, can improve the accuracy of detection whether main microphon is in blocked state, after detecting that main microphon is in blocked state,
Can switch and all continue to provide the user service from microphone, be easy to persistently carrying out for client server.And due to complex building
Two factors of signal intensity and energy detect the state of main microphon, and improve detection threshold and precision can reduce in double MIC
Mobile terminal on frequent switching microphone probability.
Fig. 4 is a kind of structural representation of the detection means of microphone state provided in an embodiment of the present invention.Such as Fig. 4 institutes
Show, the detection means of the microphone state includes：Acquisition module 11 and detection module 12.
Wherein, acquisition module 11, for the audio signal of capture setting microphone on the terminal device.
Detection module 12, for corresponding with low frequency band according to corresponding first energy of the audio signal medium-high frequency frequency range
The second energy, the current state to the microphone detects.
In the present embodiment, based on the energy that the signature analysis to audio signal is obtained, can improve to whether microphone is located
In the accuracy of detection of blocked state, the frequent switching wheat on the mobile terminal of double MIC can be reduced because accuracy of detection improves
The probability of gram wind.
Under single microphone scene is provided with terminal device, another microphone state provided in an embodiment of the present invention
Detection means structural representation, as shown in Figure 5.
Wherein, detection module 12 includes：First spectral analysis unit 121, the first extraction unit 122 and the first detection unit
123。
First spectral analysis unit 121, for carrying out spectrum analysis to the audio signal, obtains the audio signal
Sound spectrograph.
First extraction unit 122, for extracting first energy and second energy from the sound spectrograph.
First detection unit 123, if for the ratio between first energy and second energy less than default
Threshold value, then detect that the microphone is currently at blocked state.
Further, the detection means of the microphone state also includes：First adjusting module 13.
First adjusting module 13, for being put according in the ratio adjustment terminal device sound intermediate frequency signal processing module
The gain of big device and/or the Frequency Response of digital filter.
In the present embodiment, based on the energy that the signature analysis to audio signal is obtained, can improve to whether microphone is located
In the accuracy of detection of blocked state.Further, due to setting single microphone on terminal device, in order to ensure that microphone can
Service is preferably provided the user, the gain of amplifier and/or number in audio-frequency signal processing module can be adjusted on terminal device
Word filter response so that detect microphone be blocked after, can be substantially improved due to block cause decay increasing
Benefit and significantly compensate caused due to blocking decay high frequency, ensure that microphone is remained able to normally under blocked state
Use, improve Consumer's Experience.
Two microphones are provided with the terminal device, wherein, one is main microphon, one in described two microphones
It is the structural representation of the detection means of another microphone state provided in an embodiment of the present invention under the scene of microphone,
As shown in Figure 6.
Wherein, detection module 12, including：
Second spectral analysis unit 124, spectrum analysis is carried out for the audio signal to the main microphon, is obtained
The sound spectrograph of the main microphon；
Second extraction unit 125, for from the sound spectrograph of the main microphon, extracting the institute of the main microphon
State second energy of the first energy and the main microphon；
Second detection unit 126, if first energy and the institute of the main microphon for the main microphon
The ratio of the second energy is stated less than predetermined threshold value, then detects that the main microphon is currently at blocked state.
Further, the detection means of the microphone state also includes：Acquisition module 13, determining module 14, handover module
15 and second adjusting module 16.
Acquisition module 13, the first signal intensity of the audio signal for obtaining the main microphon, and it is described
From the secondary signal intensity of the audio signal of microphone.
Determining module 14, for comparing first signal intensity and the secondary signal intensity, determines first letter
Number intensity is more than or equal to default value with the difference of the secondary signal intensity.
Further, the second detection unit 126, if being additionally operable to the secondary signal intensity with first signal intensity
Difference be less than default value and lasting preset duration, then detect that the main microphon is currently at blocked state.
Further, handover module 15, described continue to provide the user service for being switched to from microphone.
Further, the second adjusting module 16, for adjusting amplifier in the audio-frequency signal processing module in the terminal
Gain and/or digital filter Frequency Response.
In the present embodiment, the current shape based on the frequecy characteristic to audio signal and signal intensity comprehensive detection main microphon
State, can improve the accuracy of detection whether main microphon is in blocked state, after detecting that main microphon is in blocked state,
Can switch and all continue to provide the user service from microphone, be easy to persistently carrying out for client server.And due to complex building
Two factors of signal intensity and energy detect the state of main microphon, and improve detection threshold and precision can reduce in double MIC
Mobile terminal on frequent switching microphone probability.
Fig. 7 is a kind of structural representation of terminal device provided in an embodiment of the present invention.As shown in figure 5, the terminal device
Including following one or more assemblies：Housing 21 and include processor 211, memory 212 and at least one in the housing 21
Microphone 213.
Wherein, processor 211 is run and executable journey by reading the executable program code stored in memory 212
The corresponding program of sequence code, for performing following steps：
The audio signal of capture setting microphone 213 on the terminal device；
According to corresponding first energy of the audio signal medium-high frequency frequency range and corresponding second energy of low frequency band, to institute
The current state for stating microphone 213 is detected.
The terminal device that the present embodiment is provided, by the audio signal of capture setting microphone on the terminal device, can
Each self-corresponding energy of low-and high-frequency frequency range is extracted from audio signal with the means that feature based is analyzed, height is then based on again and again
The energy of section detects the current state of microphone.When the ratio of low-and high-frequency energy is less than predetermined threshold value, wheat can be detected
Gram wind is currently at blocked state.In the present embodiment, based on the energy that the signature analysis to audio signal is obtained, can improve right
Whether microphone is in the accuracy of detection of blocked state, because accuracy of detection improves the mobile terminal that can be reduced in double MIC
The probability of upper frequent switching microphone.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or spy that the embodiment or example are described
Point is contained at least one embodiment of the invention or example.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be with office
Combined in an appropriate manner in one or more embodiments or example.Additionally, in the case of not conflicting, the skill of this area
Art personnel can be tied the feature of the different embodiments or example described in this specification and different embodiments or example
Close and combine.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include at least one this feature.In the description of the invention, " multiple " is meant that at least two, such as two, three
It is individual etc., unless otherwise expressly limited specifically.
Any process described otherwise above or method description in flow chart or herein is construed as, and expression includes
It is one or more for realizing custom logic function or process the step of the module of code of executable instruction, fragment or portion
Point, and the scope of the preferred embodiment of the present invention includes other realization, wherein can not press shown or discussion suitable
Sequence, including function involved by basis by it is basic simultaneously in the way of or in the opposite order, carry out perform function, this should be of the invention
Embodiment person of ordinary skill in the field understood.
Represent in flow charts or logic and/or step described otherwise above herein, for example, being considered use
In the order list of the executable instruction for realizing logic function, in may be embodied in any computer-readable medium, for
Instruction execution system, device or equipment (such as computer based system, including the system of processor or other can be held from instruction
The system of row system, device or equipment instruction fetch and execute instruction) use, or with reference to these instruction execution systems, device or set
It is standby and use.For the purpose of this specification, " computer-readable medium " can any can be included, store, communicate, propagate or pass
The dress that defeated program is used for instruction execution system, device or equipment or with reference to these instruction execution systems, device or equipment
Put.The more specifically example (non-exhaustive list) of computer-readable medium includes following：With the electricity that one or more are connected up
Connecting portion (electronic installation), portable computer diskette box (magnetic device), random access memory (RAM), read-only storage
(ROM), erasable edit read-only storage (EPROM or flash memory), fiber device, and portable optic disk is read-only deposits
Reservoir (CDROM).In addition, computer-readable medium can even is that the paper that can thereon print described program or other are suitable
Medium, because optical scanner for example can be carried out by paper or other media, then enters edlin, interpretation or if necessary with it
His suitable method is processed electronically to obtain described program, is then stored in computer storage.
It should be appreciated that each several part of the invention can be realized with hardware, software, firmware or combinations thereof.Above-mentioned
In implementation method, the software that multiple steps or method can in memory and by suitable instruction execution system be performed with storage
Or firmware is realized.Such as, if being realized, with another embodiment, following skill well known in the art being used with hardware
Any one of art or their combination are realized：With the logic gates for realizing logic function to data-signal from
Scattered logic circuit, the application specific integrated circuit with suitable combinational logic gate circuit, programmable gate array (PGA), scene can compile
Journey gate array (FPGA) etc..
Those skilled in the art are appreciated that to realize all or part of step that above-described embodiment method is carried
The rapid hardware that can be by program to instruct correlation is completed, and described program can be stored in a kind of computer-readable storage medium
In matter, the program upon execution, including one or a combination set of the step of embodiment of the method.
Additionally, during each functional unit in each embodiment of the invention can be integrated in a processing module, it is also possible to
It is that unit is individually physically present, it is also possible to which two or more units are integrated in a module.Above-mentioned integrated mould
Block can both be realized in the form of hardware, it would however also be possible to employ the form of software function module is realized.The integrated module is such as
Fruit is to realize in the form of software function module and as independent production marketing or when using, it is also possible to which storage is in a computer
In read/write memory medium.
Storage medium mentioned above can be read-only storage, disk or CD etc..Although having been shown above and retouching
Embodiments of the invention are stated, it is to be understood that above-described embodiment is exemplary, it is impossible to be interpreted as to limit of the invention
System, one of ordinary skill in the art can be changed to above-described embodiment, change, replace and become within the scope of the invention
Type.
Claims (17)
1. a kind of detection method of microphone state, it is characterised in that including：
The audio signal of capture setting microphone on the terminal device；
According to corresponding first energy of the audio signal medium-high frequency frequency range and corresponding second energy of low frequency band, to the wheat
The current state of gram wind is detected.
2. method according to claim 1, it is characterised in that when being provided with the single microphone on the terminal device
When, then it is described according to corresponding first energy of the audio signal medium-high frequency frequency range and corresponding second energy of low frequency band, it is right
The current state of the microphone detected, including：
Spectrum analysis is carried out to the audio signal, the sound spectrograph of the audio signal is obtained；
First energy and second energy are extracted from the sound spectrograph；
If the ratio between first energy and second energy is less than predetermined threshold value, detect that the microphone is worked as
It is preceding in blocked state.
3. method according to claim 2, it is characterised in that described to detect that the microphone is currently at blocked state
Afterwards, including：
Gain and/or the digital filtering of amplifier in the terminal device sound intermediate frequency signal processing module are adjusted according to the ratio
The Frequency Response of device.
4. method according to claim 1, it is characterised in that when two microphones are provided with the terminal device,
Wherein, in described two microphones one be main microphon, one be from microphone, then it is described according to high in the audio signal
Frequent corresponding first energy of section and corresponding second energy of low frequency band, the current state to the microphone detects,
Including：
The audio signal to the main microphon carries out spectrum analysis, obtains the sound spectrograph of the main microphon；
From the sound spectrograph of the main microphon, first energy and the main microphon of the main microphon are extracted
Second energy；
If the ratio of second energy of first energy of the main microphon and the main microphon is less than default
Threshold value, then detect that the main microphon is currently at blocked state.
5. method according to claim 4, it is characterised in that the audio signal to the main microphon is carried out
Spectrum analysis, before obtaining the sound spectrograph of the main microphon, also includes：
The first signal intensity of the audio signal of the main microphon is obtained, and the audio from microphone is believed
Number secondary signal intensity；
Compare first signal intensity and the secondary signal intensity, determine first signal intensity and the secondary signal
The difference of intensity is more than or equal to default value.
6. method according to claim 5, it is characterised in that also include：
If the secondary signal intensity is less than default value and lasting preset duration with the difference of first signal intensity,
Detect that the main microphon is currently at blocked state.
7. the method according to claim any one of 4-6, it is characterised in that described to detect that the Mike is currently at stifled
After plug-like state, including：
Continue to provide the user service from microphone described in being switched to.
8. method according to claim 7, it is characterised in that described being switched to described continues to provide the user from microphone
After service, including：
Adjust the gain of amplifier in the audio-frequency signal processing module in the terminal and/or the Frequency Response of digital filter.
9. a kind of detection means of microphone state, it is characterised in that including：
Acquisition module, for the audio signal of capture setting microphone on the terminal device；
Detection module, for according to corresponding first energy of the audio signal medium-high frequency frequency range and low frequency band corresponding second
Energy, the current state to the microphone is detected.
10. device according to claim 9, it is characterised in that when being provided with the single Mike on the terminal device
During wind, then the detection module, including：
First spectral analysis unit, for carrying out spectrum analysis to the audio signal, obtains the sound spectrograph of the audio signal；
First extraction unit, for extracting first energy and second energy from the sound spectrograph；
First detection unit, if being less than predetermined threshold value for the ratio between first energy and second energy,
Detect that the microphone is currently at blocked state.
11. devices according to claim 10, it is characterised in that also include：
First adjusting module, for according to amplifier in the ratio adjustment terminal device sound intermediate frequency signal processing module
Gain and/or the Frequency Response of digital filter.
12. devices according to claim 9, it is characterised in that when being provided with two microphones on the terminal device, its
In, one is main microphon in described two microphones, one be from microphone when, then the detection module, including：
Second spectral analysis unit, spectrum analysis is carried out for the audio signal to the main microphon, obtains the master
The sound spectrograph of microphone；
Second extraction unit, for from the sound spectrograph of the main microphon, extracting described the first of the main microphon
Second energy of energy and the main microphon；
Second detection unit, if second energy of first energy and the main microphon for the main microphon
The ratio of amount is less than predetermined threshold value, then detect that the main microphon is currently at blocked state.
13. devices according to claim 12, it is characterised in that also include：
Acquisition module, the first signal intensity of the audio signal for obtaining the main microphon, and it is described from Mike
The secondary signal intensity of the audio signal of wind；
Determining module, for comparing first signal intensity and the secondary signal intensity, determines first signal intensity
Difference with the secondary signal intensity is more than or equal to default value.
14. devices according to claim 13, it is characterised in that also include：
Second detection unit, if being additionally operable to the secondary signal intensity with the difference of first signal intensity less than pre-
If numerical value and lasting preset duration, then detect that the main microphon is currently at blocked state.
15. device according to claim any one of 12-14, it is characterised in that also include：
Handover module, described continues to provide the user service for being switched to from microphone.
16. methods according to claim 7, it is characterised in that also include：
Second adjusting module, gain and/or numeral for adjusting amplifier in the audio-frequency signal processing module in the terminal
Filter response.
17. a kind of terminal devices, it is characterised in that including following one or more assemblies：Housing and in the housing
Processor, memory and at least one microphone, wherein, the processor is by reading store in the memory executable
Program code runs program corresponding with the executable program code, for performing following steps：
The audio signal of capture setting microphone on the terminal device；
According to corresponding first energy of the audio signal medium-high frequency frequency range and corresponding second energy of low frequency band, to the wheat
The current state of gram wind is detected.
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| CN201710123466.4A CN106911996A (en) | 2017-03-03 | 2017-03-03 | The detection method of microphone state, device and terminal device |
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| CN201710123466.4A CN106911996A (en) | 2017-03-03 | 2017-03-03 | The detection method of microphone state, device and terminal device |
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| CN201710123466.4A Pending CN106911996A (en) | 2017-03-03 | 2017-03-03 | The detection method of microphone state, device and terminal device |
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