CN104363543A - Microphone frequency response curve adjusting method and device - Google Patents
Microphone frequency response curve adjusting method and device Download PDFInfo
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- CN104363543A CN104363543A CN201410632063.9A CN201410632063A CN104363543A CN 104363543 A CN104363543 A CN 104363543A CN 201410632063 A CN201410632063 A CN 201410632063A CN 104363543 A CN104363543 A CN 104363543A
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Abstract
The invention belongs to the technical field of mobile terminals and provides a microphone frequency response curve adjusting method and device. The method includes when the information of switching on a microphone is detected, acquiring the output value of an acceleration sensor; calling a pre-set frequency response curve relative to the output value according to the output value of the acceleration sensor; adjusting the microphone frequency response curve according to the called pre-set frequency response curve. According to the method, the output value of the acceleration sensor represents the orientation of a mobile terminal display screen, different pre-set frequency response curves can be called to adjust the current microphone frequency response curve according to the orientation of the mobile terminal display screen, the influence on the microphone frequency response curve by the placing manner of the mobile terminal is eliminated, and the communicating effect during a hands-free call and recording effect of the microphone are optimized.
Description
Technical field
The invention belongs to technical field of mobile terminals, particularly relate to a kind of method of adjustment and device of microphone frequency response curve.
Background technology
Current mobile terminal all has multiple microphone, is such as arranged on the microphone (namely microphone) in mobile phone front and is arranged on the microphone (namely microphone) at the mobile phone back side.Because the front and back of mobile phone is provided with microphone, therefore, when mobile phone front (having the one side of display screen) is placed on the object of the platforms such as desktop upward, will be blocked with the microphone on the mobile phone back side of object contact.The microphone blocked will be affected when recording or hand-free call, and its poor effect, even produces very large difference.
Summary of the invention
Given this, the object of the embodiment of the present invention is the method for adjustment and the device that provide a kind of microphone frequency response curve, to solve the impact of the different disposing way of mobile terminal on rear microphone frequency response curve, improves recording or the hand-free call effect of rear microphone.
First aspect, a kind of method of adjustment of microphone frequency response curve, described method comprises:
When the information starting microphone being detected, obtain the output valve of acceleration transducer;
The preset frequency response curve associated with described output valve is called according to the output valve of described acceleration transducer;
The frequency response curve of described microphone is adjusted according to called preset frequency response curve.
Further, described preset frequency response curve comprises the first preset frequency response curve;
The described output valve according to described acceleration transducer also comprises before calling the preset frequency response curve associated with described output valve:
Obtain terminal display screen upward time microphone initial frequency response curve;
To adjust in described initial frequency response curve the sound frequency that decline exceedes predetermined threshold value, after adjustment terminates, again obtain terminal display screen upward time microphone frequency response curve, and using the frequency response curve of this acquisition as the first preset frequency response curve;
Associated with the output valve of acceleration transducer by described first preset frequency response curve, described output valve is Z axis component of acceleration is positive output valve;
Store the first preset frequency response curve after described association.
Further, described preset frequency response curve comprises the second preset frequency response curve;
The described output valve according to described acceleration transducer also comprises before calling the preset frequency response curve associated with described output valve:
Obtain terminal display screen down time microphone initial frequency response curve;
To adjust in described initial frequency response curve the sound frequency that decline exceedes predetermined threshold value, after adjustment terminates, again obtain terminal display screen down time microphone frequency response curve, and using the frequency response curve of this acquisition as the second preset frequency response curve;
Associated with the output valve of acceleration transducer by described second preset frequency response curve, described output valve is Z axis component of acceleration is negative output valve;
Store the second preset frequency response curve after described association.
Further, described method also comprises:
Obtain the white noise recording file of microphone;
The initial frequency response curve corresponding with described white noise recording file is obtained according to described white noise recording file.
Further, described microphone is rear microphone.
Second aspect, provide a kind of adjusting device of microphone frequency response curve, described device comprises:
Acquisition module, for when the information starting microphone being detected, obtains the output valve of acceleration transducer;
Calling module, for calling the preset frequency response curve associated with described output valve according to the output valve of described acceleration transducer;
Adjusting module, for adjusting the frequency response curve of described microphone according to called preset frequency response curve.
Further, described preset frequency response curve comprises the first preset frequency response curve;
Described device also comprises:
Pre-adjustment module, for obtain terminal display screen upward time microphone initial frequency response curve; To adjust in described initial frequency response curve the sound frequency that decline exceedes predetermined threshold value, after adjustment terminates, again obtain terminal display screen upward time microphone frequency response curve, and using the frequency response curve of this acquisition as the first preset frequency response curve;
Relating module, for being associated with the output valve of acceleration transducer by described first preset frequency response curve, described output valve is Z axis component of acceleration is positive output valve;
Memory module, for storing the first preset frequency response curve after described association.
Further, described preset frequency response curve comprises the second preset frequency response curve;
Described pre-adjustment module also for obtain terminal display screen down time microphone initial frequency response curve; To adjust in described initial frequency response curve the sound frequency that decline exceedes predetermined threshold value, after adjustment terminates, again obtain terminal display screen down time microphone frequency response curve, and using the frequency response curve of this acquisition as the second preset frequency response curve;
Described relating module is also for associating described second preset frequency response curve with the output valve of acceleration transducer, and described output valve is Z axis component of acceleration is negative output valve;
Described memory module is also for storing the second preset frequency response curve after described association.
Further, described pre-adjustment module also for:
Obtain the white noise recording file of microphone;
The initial frequency response curve corresponding with described white noise recording file is obtained according to described white noise recording file.
Further, described microphone is rear microphone.。
Compared with prior art, the embodiment of the present invention detect start the information of microphone time, according to the output valve of described acquisition of information acceleration transducer; And the preset frequency response curve associated with described output valve is called according to the output valve of described acceleration transducer; Then according to the frequency response curve of called preset frequency response curve adjustment microphone; Wherein, the output valve of described acceleration transducer characterize mobile terminal display screen towards, thus achieve according to mobile terminal display screen towards the frequency response curve calling different preset frequency response curves and adjust current microphone, the disposing way eliminating mobile terminal, on the impact of the frequency response curve of microphone, improves the effect of microphone hand-free call or recording.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the first realization flow figure of the method for adjustment of the microphone frequency response curve that the embodiment of the present invention one provides;
Fig. 2 is the schematic diagram of the microphone frequency response curve that the embodiment of the present invention one provides;
Fig. 3 is the second realization flow figure of the method for adjustment of the microphone frequency response curve that the embodiment of the present invention two provides;
Fig. 4 is the composition structure chart of the adjusting device of the microphone frequency response curve that the embodiment of the present invention three provides.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
In embodiments of the present invention, by detecting the information starting microphone, according to the output valve of described acquisition of information acceleration transducer; And the preset frequency response curve associated with described output valve is called according to the output valve of described acceleration transducer; Then according to the frequency response curve of called preset frequency response curve adjustment microphone; Wherein, the output valve of described acceleration transducer characterize mobile terminal display frequently towards, thus achieve according to mobile terminal display screen towards the frequency response curve calling different preset frequency response curves and adjust microphone, the disposing way eliminating mobile terminal, on the impact of the frequency response curve of microphone, improves the effect of microphone call or recording.The embodiment of the present invention additionally provides the adjusting device of corresponding microphone frequency response curve, is described in detail respectively below.
embodiment one
Fig. 1 shows first of the method for adjustment of the microphone frequency response curve that the invention process one provides and realizes stream; For convenience of explanation, illustrate only part related to the present invention.
In embodiments of the present invention, described method is applied to be had in the terminal of microphone, and described terminal equipment can be mobile terminal, includes but not limited to mobile phone, panel computer, notebook etc., is preferably mobile phone.Described mobile terminal has at least one microphone.If when mobile terminal starts recording or hand-free call function, voice signal will be gathered by described microphone.
As shown in Figure 1, described method comprises:
In step S101, when the information starting microphone being detected, obtain the output valve of acceleration transducer.
Under normal circumstances, only when use hand-free call or recording, just microphone can be used.Therefore, in the present embodiment, the information of described startup microphone is preferably user and triggers hand-free call function or sound-recording function and the microphone enabled instruction sent.When mobile terminal detect user open hand-free call or sound-recording function and the microphone enabled instruction triggered time, starting loop transducer.Preferably, the information of described startup microphone also can be the trigger message of the startup microphone that mobile terminal produces according to prefixed time interval.
Preferably, described acceleration transducer is Gravity accelerometer.Described Gravity accelerometer is arranged at the inside of mobile terminal, can experience the acceleration of gravity that gravity causes, and converts available output signal to, thus can know mobile terminal gradient with respect to the horizontal plane by described acceleration transducer.Therefore, the described output valve according to obtaining acceleration transducer is specially:
Pre-set a time range; In described time range, fastened the component of acceleration of X-axis, Y-axis, Z axis at three-dimensional coordinate by acceleration sensor detection mobile terminal.
By above-mentioned steps, can obtain the output valve (x, y, z) of acceleration transducer, wherein, x is the component of acceleration of mobile terminal in X-axis, and y is the component of acceleration of mobile terminal in Y-axis, and z is the component of acceleration of mobile terminal on Z axis.
In step s 102, the preset frequency response curve associated with described output valve is called according to the output valve of described acceleration transducer.
In the present embodiment, the frequency response curve of microphone refers to and the characteristic that the sensitivity of microphone changes with sound frequency change usually represents with curve.Exemplary, the microphone of mobile phone is carry out testing in the open environment of anechoic chamber before dispatching from the factory, and now microphone is not with ante-chamber and back cavity, and the microphone frequency response curve of acquisition is comparatively straight, as shown in dashed line in figure 2.In fig. 2, abscissa represents sound frequency, and ordinate represents relative sensitivity.Straight frequency response curve shows that the recording level of microphone to the SoundRec of identical loudness different frequency is the same.But when microphone adds ante-chamber (i.e. leading note pipeline), or (such as microphone is arranged on the back side of mobile terminal when microphone is blocked, and the back side of mobile terminal and desktop are close to, thus cause microphone to be blocked), now, the signal strength signal intensity that the sound recording of microphone to identical loudness different frequency obtains is different, and frequency response curve will become not concordant, as solid line in figure 2.
Therefore, when the microphone of mobile terminal uses for the first time or dispatches from the factory, the embodiment of the present invention test in advance and obtain microphone mobile terminal display screen different towards time corresponding frequency response curve, and described microphone frequency response curve is adjusted, to obtain straight frequency response curve, and to define this straight microphone frequency response curve be preset frequency response curve.Described preset frequency response curve as the microphone of mobile terminal in use to the reference system that frequency response curve adjusts.
Preferably, according to the difference of mobile terminal display screen towards, described preset frequency response curve at least comprises two.When described microphone is arranged on front or the back side of mobile terminal, described preset frequency response curve comprise mobile terminal display screen upward time corresponding preset frequency response curve and mobile terminal display screen down time corresponding preset frequency response curve, preset frequency response curve corresponding when being faced upward or downward by mobile terminal display screen associates with the output valve of acceleration transducer, and stores the preset frequency response curve after described association.When standby communication terminal starts microphone, then called the preset frequency response curve of association by the output valve of acceleration transducer.Wherein, the output valve of described acceleration transducer characterize mobile terminal display screen towards, thus achieve according to mobile terminal display screen towards knowing the position that microphone is current, and call the preset frequency response curve be associated.
In step s 103, the frequency response curve of current microphone is adjusted according to called preset frequency response curve.
In the present embodiment, with called preset frequency response curve for reference system, the frequency response curve of adjustment microphone, comprise the characteristic quantity such as bandwidth, cut-off frequency when the current microphone of adjustment runs, make the frequency response curve of current microphone closer to preset frequency response curve, the frequency response curve of the current microphone namely after adjustment is more straight, thus obtains better acoustical quality.
In embodiments of the present invention, by detecting the information starting microphone, according to the output valve of described acquisition of information acceleration transducer; And the preset frequency response curve associated with described output valve is called according to the output valve of described acceleration transducer; Then according to the frequency response curve of called preset frequency response curve adjustment microphone; Wherein, the output valve of described acceleration transducer characterize mobile terminal display screen towards, thus achieve according to mobile terminal display screen towards the frequency response curve calling different preset frequency response curves and adjust current microphone, the disposing way eliminating mobile terminal, on the impact of the frequency response curve of microphone, improves the effect of microphone hand-free call or recording.
embodiment two
Fig. 3 shows method of adjustment second realization flow of the microphone frequency response curve that the embodiment of the present invention two provides, and for convenience of explanation, illustrate only part related to the present invention.
In the present embodiment, consider that user is when using mobile terminal to carry out hand-free call or recording, ordinary practice by mobile terminal front (namely having the one side of display screen) towards being placed on the smooth object such as such as desktop, now, the rear microphone being arranged on the mobile terminal back side will be blocked.The embodiment of the present invention is described in detail with the method for adjustment of rear microphone to microphone frequency response curve being arranged on the mobile terminal back side.
When the microphone of terminal dispatches from the factory or uses first, test described rear microphone mobile terminal display screen difference towards time corresponding preset frequency response curve.As shown in Figure 3, described method comprises:
In step S301, obtain mobile terminal display screen upward (or down) time microphone initial frequency response curve.
In the present embodiment, call function is started for mobile terminal, ACQUA system (i.e. high level communication quality analysis system) is then adopted to send frequency response index, obtain mobile terminal display screen upward (or down) time after the initial frequency response curve of microphone, the audio frequency range of described frequency response curve is preferably 0-4k (width is 0-8K).And sound-recording function is started for mobile terminal, then first obtain mobile terminal display screen upward (or down) time after the white noise recording file of microphone; Then the initial frequency response curve corresponding with described white noise recording file is obtained according to described white noise recording file.
In step s 302, adjust decline in described initial frequency response curve and exceed the sound frequency of predetermined threshold value.
The embodiment of the present invention adopts decline in the described initial frequency response curve of the adjustment of the iir digital filter in mobile terminal (such as mobile phone) in house software to exceed the sound frequency of predetermined threshold value.Described IIR numeral oscillograph and wireless pulses responding digital filter, have feedback loop.From initial frequency response curve, iir digital filter can obtain frequency response and to decline large sound frequency, and when frequency response decline exceedes predetermined threshold value, compensates the frequency range of described sound frequency and neighbouring frequency composition thereof.
In step S303, after adjustment terminates, again obtain dynamic terminal display screen upward (or down) time microphone frequency response curve, and using the frequency response curve of this acquisition as the first preset frequency response curve (or second preset frequency response curve).
Wherein, mobile terminal display screen upward time, the frequency response curve being tending towards straight rear microphone after being defined through iir digital filter adjustment is the first preset frequency response curve; Mobile terminal display screen down time, the frequency response curve being tending towards straight rear microphone after being defined through iir digital filter adjustment is the second preset frequency response curve.
In step s 304, described first preset frequency response curve (or second preset frequency response curve) is associated with acceleration transducer output valve, output valve when to be Z axis component of acceleration be described output valve just (or negative).
In the present embodiment, first preset frequency response curve be mobile terminal display screen upward time obtain, and mobile terminal display screen upward time corresponding acceleration transducer the Z axis component of acceleration of output valve be just, in order to realize according to display screen towards the frequency response curve calling corresponding preset frequency response curve and adjust current microphone, described first preset frequency response curve is associated with acceleration transducer output valve, the output valve of described output valve to be Z axis component of acceleration be timing; In like manner, described second preset frequency response curve is associated with acceleration transducer output valve, the output valve that described output valve is Z axis component of acceleration when being negative.
In step S305, store the first preset frequency response curve after described association (or second preset frequency response curve).
Exemplary, if mobile terminal display screen upward time, there is serious decline at HFS in the frequency response curve that after test, microphone obtains, can have influence on the definition of voice.Now, when frequency response decline exceedes predetermined threshold value, the curve of HFS is drawn high by iir digital filter, to compensate the decline of rear microphone at HFS.The frequency response curve of the rear microphone again obtained during test will be tending towards straight, embodiment of the present invention definition is described be tending towards after iir digital filter adjustment straight after the frequency response curve of microphone be the first preset frequency response curve, and store described first preset frequency response curve.In like manner, mobile terminal display screen down time, define described be tending towards after iir digital filter adjustment straight after the frequency response curve of microphone be the second preset frequency response curve, and store described second preset frequency response curve.
After setting completed for the first preset frequency response curve and the second preset frequency response curve, wait for the microphone enabled instruction that user triggers when starting hand-free call or sound-recording function.
In step S306, when the information starting microphone being detected, obtain the output valve of acceleration transducer.
In the present embodiment, the output valve of acceleration transducer is (x, y, z), and wherein, x is the component of acceleration of mobile terminal in X-axis, and y is the component of acceleration of mobile terminal in Y-axis, and z is the component of acceleration of mobile terminal on Z axis.
In step S307, call the preset frequency response curve associated with described output valve according to the output valve of described acceleration transducer.
Exemplarily, for rear microphone, be timing at the Z axis component of acceleration of the output valve of acceleration transducer, call the first preset frequency response curve; When the Z axis component of acceleration of the output valve of acceleration transducer is for bearing, call the second preset frequency response curve.
Preferably, if the Z axis component of acceleration of the output valve of acceleration transducer is not just be not negative yet, when namely Z axis component of acceleration is 0, mobile terminal is holded up along side, now, the rear microphone at the mobile terminal back side is not blocked, and can call Second Threshold frequency response curve.
In step S308, according to the frequency response curve of called preset frequency response curve adjustment microphone.
In the present embodiment, with called preset frequency response curve for reference, the frequency response curve of microphone after adjustment, the characteristic quantity such as bandwidth, cut-off frequency when microphone runs after comprising adjustment, make the frequency response curve of rear microphone closer to preset frequency response curve, namely the frequency response curve that the rearmounted Mike after adjustment divides is more level and smooth, thus obtains better acoustical quality.
In embodiments of the present invention, for rear microphone, the display screen testing described mobile terminal in advance upward and down time preset frequency response curve, and store after it is associated with the output valve of acceleration transducer, wherein, described acceleration transducer output valve characterize mobile terminal display screen towards.After user starts during microphone, then sense acceleration sensor output value, and the preset frequency response curve of association is called according to the output valve of acceleration transducer, to adjust the frequency response curve of described rear microphone, thus improve the effect of rear microphone hand-free call or recording, eliminate the disposing way of mobile terminal to the impact of the frequency response curve of rear microphone.
It should be noted that, the foregoing is only a preferred embodiment of the present invention, be not limited to the present invention.Described microphone also can be preposition microphone.
embodiment three
Fig. 4 shows the composition structure of the microphone frequency response curve adjusting device that the embodiment of the present invention three provides, and for convenience of explanation, illustrate only the part relevant to the embodiment of the present invention.
In embodiments of the present invention, described application of installation, in the method for adjustment realizing microphone frequency response curve as described in Fig. 1 and Fig. 3 embodiment, can be the unit being built in the software unit of terminal, hardware cell or software and hardware combining.Described terminal is provided with microphone, and described terminal can be mobile terminal, includes but not limited to mobile phone, panel computer, notebook computer etc.
The adjusting device of described microphone frequency response curve comprises:
Acquisition module 41, for when the information starting microphone being detected, obtains the output valve of acceleration transducer;
Calling module 42, for calling the preset frequency response curve associated with described output valve according to the output valve of described acceleration transducer;
Adjusting module 43, for adjusting the frequency response curve of described microphone according to called preset frequency response curve.
In the present embodiment, with called preset frequency response curve for reference, the frequency response curve of adjustment microphone, comprise the characteristic quantity such as bandwidth, cut-off frequency when the current microphone of adjustment runs, make the frequency response curve of current microphone closer to preset frequency response curve, the frequency response curve of the current microphone namely after adjustment is more straight, thus obtains better acoustical quality.
Preferably, described device also comprises an acceleration transducer.Described acceleration transducer is preferably Gravity accelerometer, for experiencing the acceleration of gravity that gravity causes, and converting useful output signal to, can know the gradient of mobile terminal and horizontal plane from this output signal.The embodiment of the present invention with the size of the Z axis component of acceleration in acceleration transducer output valve determine mobile terminal display screen towards, be specially: be timing at described Z axis component of acceleration, the display screen of mobile terminal is upward; At described Z axis component of acceleration for time negative, the display screen of mobile terminal down.
Described microphone for being arranged on microphone before mobile terminal front, or can be arranged on the rear microphone at the mobile terminal back side, microphone after being preferably.
In embodiments of the present invention, described preset frequency response curve comprises the first preset frequency response curve and the second preset frequency response curve; Described calling module 42 specifically for:
Be timing at the Z axis component of acceleration of the output valve of acceleration transducer, call the first preset frequency response curve;
When the Z axis component of acceleration of the output valve of acceleration transducer is for bearing, call the second preset frequency response curve.
In the present embodiment, described first preset frequency response curve and the second preset frequency response curve are test in advance and store.Therefore, described device also comprises:
Pre-adjustment module 44, for obtain terminal display screen upward time microphone initial frequency response curve; To adjust in described initial frequency response curve the sound frequency that decline exceedes predetermined threshold value, after adjustment terminates, again obtain terminal display screen upward time microphone frequency response curve, and using the frequency response curve of this acquisition as the first preset frequency response curve;
Relating module 45, for being associated with the output valve of acceleration transducer by described first preset frequency response curve, described output valve is Z axis component of acceleration is positive output valve;
Memory module 46, for storing the first preset frequency response curve after described association.
Thus complete the setting of the first preset frequency response curve.In like manner, for the second preset frequency response curve:
Described pre-adjustment module 44 also for obtain terminal display screen down time microphone initial frequency response curve; To adjust in described initial frequency response curve the sound frequency that decline exceedes predetermined threshold value, after adjustment terminates, again obtain terminal display screen down time microphone frequency response curve, and using the frequency response curve of this acquisition as the second preset frequency response curve;
Described relating module 45 is also for associating described second preset frequency response curve with the output valve of acceleration transducer, and described output valve is Z axis component of acceleration is negative output valve;
Described memory module 46 is also for storing the second preset frequency response curve after described association.
Preferably, in embodiments of the present invention, under call function or sound-recording function, obtain the mode of initial frequency response curve different for mobile terminal.Call function is started for mobile terminal, described pre-debugging module specifically for: adopt ACQUA system (i.e. high level communication quality analysis system) to send frequency response index, obtain rear microphone mobile terminal display screen upward/down time corresponding initial frequency response curve.And sound-recording function is started for mobile terminal, described pre-debugging module concrete also for: obtain mobile terminal display screen upward/down time after the white noise recording file of microphone; The initial frequency response curve corresponding with described white noise recording file is obtained according to described white noise recording file.
In embodiments of the present invention, for rear microphone, the display screen testing described mobile terminal in advance upward and down time preset frequency response curve, and store after it is associated with the output valve of acceleration transducer, wherein, described acceleration transducer output valve characterize mobile terminal display screen towards.After user starts during microphone, then sense acceleration sensor output value, and the preset frequency response curve of association is called according to the output valve of acceleration transducer, to adjust the frequency response curve of described rear microphone, thus improve the effect of rear microphone hand-free call or recording, eliminate the disposing way of mobile terminal to the impact of the frequency response curve of rear microphone.
It should be noted that, device in the embodiment of the present invention may be used for the whole technical schemes realized in said method embodiment, the function of its each functional module can according to the method specific implementation in said method embodiment, its specific implementation process can refer to the associated description in above-described embodiment, repeats no more herein.
The embodiment of the present invention is passed through when the information starting rear microphone being detected, according to the output valve of described acquisition of information acceleration transducer; And the preset frequency response curve associated with described output valve is called according to the output valve of described acceleration transducer; Then according to the frequency response curve of called preset frequency response curve adjustment microphone; Wherein, the output valve of described acceleration transducer characterize mobile terminal towards, thus achieve according to mobile terminal display screen towards the frequency response curve calling different preset frequency response curves and adjust microphone, the disposing way eliminating mobile terminal, on the impact of the frequency response curve of microphone, improves the effect of microphone hand-free call or recording.
Those of ordinary skill in the art it is also understood that, the all or part of step realized in above-described embodiment method is that the hardware that can carry out instruction relevant by program has come, described program can be stored in a computer read/write memory medium, described storage medium, comprises ROM/RAM, disk, CD etc.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention.Such as, modules is carry out dividing according to function logic, but is not limited to above-mentioned division, as long as can realize corresponding function; In addition, the concrete title of each functional module, also just for the ease of mutual differentiation, is not limited to protection scope of the present invention.
All any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a method of adjustment for microphone frequency response curve, is characterized in that, described method comprises:
When the information starting microphone being detected, obtain the output valve of acceleration transducer;
The preset frequency response curve associated with described output valve is called according to the output valve of described acceleration transducer;
The frequency response curve of described microphone is adjusted according to called preset frequency response curve.
2. the method for adjustment of microphone frequency response curve as claimed in claim 1, it is characterized in that, described preset frequency response curve comprises the first preset frequency response curve;
The described output valve according to described acceleration transducer also comprises before calling the preset frequency response curve associated with described output valve:
Obtain terminal display screen upward time microphone initial frequency response curve;
To adjust in described initial frequency response curve the sound frequency that decline exceedes predetermined threshold value, after adjustment terminates, again obtain terminal display screen upward time microphone frequency response curve, and using the frequency response curve of this acquisition as the first preset frequency response curve;
Associated with the output valve of acceleration transducer by described first preset frequency response curve, described output valve is Z axis component of acceleration is positive output valve;
Store the first preset frequency response curve after described association.
3. the method for adjustment of microphone frequency response curve as claimed in claim 2, it is characterized in that, described preset frequency response curve comprises the second preset frequency response curve;
The described output valve according to described acceleration transducer also comprises before calling the preset frequency response curve associated with described output valve:
Obtain terminal display screen down time microphone initial frequency response curve;
To adjust in described initial frequency response curve the sound frequency that decline exceedes predetermined threshold value, after adjustment terminates, again obtain terminal display screen down time microphone frequency response curve, and using the frequency response curve of this acquisition as the second preset frequency response curve;
Associated with the output valve of acceleration transducer by described second preset frequency response curve, described output valve is Z axis component of acceleration is negative output valve;
Store the second preset frequency response curve after described association.
4. the method for adjustment of microphone frequency response curve as claimed in claim 2 or claim 3, it is characterized in that, described method also comprises:
Obtain the white noise recording file of microphone;
The initial frequency response curve corresponding with described white noise recording file is obtained according to described white noise recording file.
5. the method for adjustment of microphone frequency response curve as claimed in claim 1, it is characterized in that, described microphone is rear microphone.
6. an adjusting device for microphone frequency response curve, is characterized in that, described device comprises:
Acquisition module, for when the information starting microphone being detected, obtains the output valve of acceleration transducer;
Calling module, for calling the preset frequency response curve associated with described output valve according to the output valve of described acceleration transducer;
Adjusting module, for adjusting the frequency response curve of described microphone according to called preset frequency response curve.
7. the adjusting device of microphone frequency response curve as claimed in claim 6, it is characterized in that, described preset frequency response curve comprises the first preset frequency response curve;
Described device also comprises:
Pre-adjustment module, for obtain terminal display screen upward time microphone initial frequency response curve; To adjust in described initial frequency response curve the sound frequency that decline exceedes predetermined threshold value, after adjustment terminates, again obtain terminal display screen upward time microphone frequency response curve, and using the frequency response curve of this acquisition as the first preset frequency response curve;
Relating module, for being associated with the output valve of acceleration transducer by described first preset frequency response curve, described output valve is Z axis component of acceleration is positive output valve;
Memory module, for storing the first preset frequency response curve after described association.
8. the adjusting device of microphone frequency response curve as claimed in claim 7, it is characterized in that, described preset frequency response curve comprises the second preset frequency response curve;
Described pre-adjustment module also for obtain terminal display screen down time microphone initial frequency response curve; To adjust in described initial frequency response curve the sound frequency that decline exceedes predetermined threshold value, after adjustment terminates, again obtain terminal display screen down time microphone frequency response curve, and using the frequency response curve of this acquisition as the second preset frequency response curve;
Described relating module is also for associating described second preset frequency response curve with the output valve of acceleration transducer, and described output valve is Z axis component of acceleration is negative output valve;
Described memory module is also for storing the second preset frequency response curve after described association.
9. the adjusting device of as claimed in claim 7 or 8 microphone frequency response curve, is characterized in that, described pre-adjustment module also for:
Obtain the white noise recording file of microphone;
The initial frequency response curve corresponding with described white noise recording file is obtained according to described white noise recording file.
10. the adjusting device of microphone frequency response curve as claimed in claim 6, it is characterized in that, described microphone is rear microphone.
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| CN109036445A (en) * | 2017-06-12 | 2018-12-18 | 杭州萤石网络有限公司 | The method of adjustment and moving camera of the source of sound yield value of microphone MIC sensor |
| CN109413253A (en) * | 2017-08-17 | 2019-03-01 | 西安中兴新软件有限责任公司 | A kind of noise-eliminating method and device for realizing mobile terminal |
| CN113873399A (en) * | 2021-09-13 | 2021-12-31 | 中山大学 | Method for improving speech definition of audio system |
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