CN109036445A - The method of adjustment and moving camera of the source of sound yield value of microphone MIC sensor - Google Patents
The method of adjustment and moving camera of the source of sound yield value of microphone MIC sensor Download PDFInfo
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- CN109036445A CN109036445A CN201710438854.1A CN201710438854A CN109036445A CN 109036445 A CN109036445 A CN 109036445A CN 201710438854 A CN201710438854 A CN 201710438854A CN 109036445 A CN109036445 A CN 109036445A
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/003—Changing voice quality, e.g. pitch or formants
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0208—Noise filtering
- G10L21/0216—Noise filtering characterised by the method used for estimating noise
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72448—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0208—Noise filtering
- G10L21/0216—Noise filtering characterised by the method used for estimating noise
- G10L2021/02161—Number of inputs available containing the signal or the noise to be suppressed
- G10L2021/02163—Only one microphone
Abstract
The embodiment of the invention provides a kind of methods of adjustment of the source of sound yield value of microphone MIC sensor, applied to Image Acquisition mobile terminal, it includes MIC sensor that described image, which acquires mobile terminal, which comprises determines the current acceleration and current kinetic speed of described image acquisition mobile terminal；According to the positive and negative situation of the current acceleration and the variation tendency of the current kinetic speed, judge whether the tone-entering hole of the MIC sensor is consistent towards the direction of motion for acquiring mobile terminal with described image；If it has, then turning the current input source of sound yield value of the MIC sensor down.It can reduce the wind noise of input MIC sensor using the embodiment of the present invention.
Description
Technical field
The present invention relates to audio signal processing technique fields, more particularly to a kind of adjustment of the source of sound yield value of MIC sensor
Method and moving camera.
Background technique
With the fast development of moving camera technology, the requirement for the audio quality that user records moving camera is also increasingly
It is high.When being recorded a video or recorded using moving camera during the motion, since movement velocity is very fast, cause on moving camera
Microphone (Microphone, MIC) sensor of setting while input audio, also has input wind noise, affects audio
Quality.
In order to reduce the wind noise of input MIC sensor, at present using the entering tone that relatively broad method is in microphone
Setting drop wind surface structure at hole.But the movement side of larger in wind speed and MIC sensor tone-entering hole direction and moving camera
To under consistent scene, there are still biggish wind noises in recording.
Summary of the invention
The method of adjustment and movement phase of a kind of source of sound yield value for being designed to provide MIC sensor of the embodiment of the present invention
Machine, to realize the wind noise for reducing input MIC sensor.Specific technical solution is as follows:
The embodiment of the present invention proposes a kind of method of adjustment of the source of sound yield value of microphone MIC sensor, is applied to figure
As acquisition mobile terminal, it includes MIC sensor that described image, which acquires mobile terminal, which comprises determines that described image is adopted
Collect the current acceleration and current kinetic speed of mobile terminal；According to the positive and negative situation of the current acceleration and described work as
The variation tendency of preceding movement velocity judges the tone-entering hole direction and the fortune of described image acquisition mobile terminal of the MIC sensor
Whether dynamic direction is consistent；If it has, then turning the current input source of sound yield value of the MIC sensor down.
Preferably, before the step of current input source of sound yield value for turning the MIC sensor down, the method is also
It include: to judge whether the current kinetic speed is more than pre-set velocity threshold value；If the current kinetic speed is more than pre-set velocity
Threshold value, then execute described in the step of turning the current input source of sound yield value of the MIC sensor down.
Preferably, the step of current input source of sound yield value for turning the MIC sensor down, comprising: according to default
Movement velocity and input source of sound yield value corresponding relationship, determine that the current kinetic speed corresponding target input source of sound increases
Benefit value；Judge whether current input source of sound yield value and the target input source of sound yield value of the MIC sensor are consistent；If
Be it is no, then by the current input source of sound yield value adjust to the target input source of sound yield value.
Preferably, the corresponding relationship according to preset movement velocity and input source of sound yield value determines described current
The step of corresponding target of movement velocity inputs source of sound yield value, comprising: according to the preset table of comparisons, determine the current kinetic
Target speed section locating for speed, the table of comparisons include at least one movement velocity section and input source of sound yield value
Corresponding relationship；According to the table of comparisons, the corresponding target input source of sound yield value in the target speed section is determined.
Preferably, if the tone-entering hole of the MIC sensor acquires the direction of motion of mobile terminal not towards with described image
Unanimously, the method also includes: by the MIC sensor input source of sound current input source of sound yield value be adjusted to preset gain
Value.
Preferably, described image acquisition mobile terminal further includes acceleration transducer and velocity sensor；By the acceleration
Degree sensor determines the acceleration of described image acquisition mobile terminal, and determines that described image acquires by the velocity sensor
The movement velocity of mobile terminal；The method also includes: when the acceleration transducer and the velocity sensor are in suspend mode
When mode, judge described image acquisition mobile terminal whether setting in motion, if it has, then by the acceleration transducer and described
Velocity sensor is switched to normal mode of operation；Judge whether the variable quantity of the current acceleration is less than preset acceleration and increases
Threshold value is measured, and the variable quantity is less than whether the duration of the acceleration delta threshold is more than preset quiescent time threshold
Value, the variable quantity includes the acceleration transducer in current preset sampling period collected acceleration, is worked as with described
The difference between previous default sampling period collected acceleration before the preceding default sampling period；If it has, then determining institute
It states Image Acquisition mobile terminal to remain static, the acceleration transducer and the velocity sensor is switched to described stop
Sleep mode.
The embodiment of the present invention also proposed a kind of moving camera, be provided on the moving camera microphone MIC sensor,
Acceleration transducer, velocity sensor, processor and audio processor；The acceleration transducer, for determining the movement
The current acceleration of camera；The velocity sensor, for determining the current kinetic speed of the moving camera；The processing
Device, for according to the positive and negative situation of the current acceleration and the variation tendency of the current kinetic speed, described in judgement
Whether the tone-entering hole direction of MIC sensor is consistent with the direction of motion of the moving camera；If it has, then at by the audio
Reason device turns the current input source of sound yield value of the MIC sensor down.
Preferably, the processor is also used to judge whether the current kinetic speed is more than pre-set velocity threshold value；If institute
Current kinetic speed is stated more than pre-set velocity threshold value, then the current defeated of the MIC sensor is turned down by the audio processor
Enter source of sound yield value.
Preferably, the processor, specifically for the corresponding pass according to preset movement velocity and input source of sound yield value
System determines the corresponding target input source of sound yield value of the current kinetic speed；Judge the current input sound of the MIC sensor
Whether source gain value and target input source of sound yield value are consistent；If it has not, then being worked as by described in by the audio processor
Preceding input source of sound yield value adjusts to the target and inputs source of sound yield value.
Preferably, the processor is specifically used for being determined locating for the current kinetic speed according to the preset table of comparisons
Target speed section, the table of comparisons include the corresponding pass at least one movement velocity section with input source of sound yield value
System；According to the preset table of comparisons, the corresponding target input source of sound yield value in the target speed section is determined.
Preferably, the processor is also used to that the MIC sensor is inputted working as source of sound by the audio processor
Preceding input source of sound yield value is adjusted to preset gain value.
Preferably, the processor is also used to be in suspend mode mould when the acceleration transducer and the velocity sensor
When formula, judge the moving camera whether setting in motion, if it has, then by the acceleration transducer and the velocity sensor
It is switched to normal mode of operation；When the acceleration transducer and the velocity sensor are in the normal mode of operation,
Judge whether the variable quantity of the current acceleration is less than preset acceleration delta threshold, and the variable quantity is less than described add
Whether the duration of speed increment threshold value is more than preset quiescent time threshold value, and the variable quantity includes the acceleration sensing
Device is in current preset sampling period collected acceleration, with the previous default sampling before the current preset sampling period
Difference between period collected acceleration；If it has, then determining that the moving camera remains static, by the acceleration
Degree sensor and the velocity sensor are switched to the suspend mode.
The embodiment of the present invention separately proposes a kind of sports equipment, including processor, communication interface, memory and communication are always
Line, wherein processor, communication interface, memory complete mutual communication by communication bus；Memory, based on storing
Calculation machine program；Processor when for executing the program stored on memory, realizes following steps: determining that described image acquires
The current acceleration and current kinetic speed of mobile terminal；According to the positive and negative situation of the current acceleration and described current
The variation tendency of movement velocity judges the tone-entering hole direction and the movement of described image acquisition mobile terminal of the MIC sensor
Whether direction is consistent；If it has, then turning the current input source of sound yield value of the MIC sensor down.
The embodiment of the present invention has reintroduced a kind of computer readable storage medium, the computer readable storage medium memory
Computer program is contained, when the computer program is executed by processor, realizes following steps: determining described image acquisition movement
The current acceleration and current kinetic speed of terminal；According to the positive and negative situation of the current acceleration and the current kinetic
The variation tendency of speed judges the tone-entering hole direction and the direction of motion of described image acquisition mobile terminal of the MIC sensor
It is whether consistent；If it has, then turning the current input source of sound yield value of the MIC sensor down.
A kind of method of adjustment of the source of sound yield value of MIC sensor provided in an embodiment of the present invention is applied to Image Acquisition
Mobile terminal, firstly, obtaining the current acceleration and current kinetic speed of Image Acquisition mobile terminal；According to current acceleration and
Current kinetic speed judges whether the tone-entering hole direction of MIC sensor is consistent with the direction of motion of Image Acquisition mobile terminal, if
Be it is yes, then judge whether current kinetic speed is more than pre-set velocity threshold value, if it has, then turning the current input of MIC sensor down
Source of sound yield value, to reduce the wind noise of input MIC sensor.
As it can be seen that noise-reduction method described in the embodiment of the present invention, it can be in the tone-entering hole direction and Image Acquisition of MIC sensor
It is defeated to reduce by turning the current input source of sound yield value of MIC sensor down under the identical scene of the direction of motion of mobile terminal
Enter the wind noise of MIC sensor, improves the quality of MIC sensor input source of sound.Certainly, it implements any of the products of the present invention or square
Method must be not necessarily required to reach all the above advantage simultaneously.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of flow chart of the method for adjustment of the source of sound yield value of the MIC sensor of the embodiment of the present invention；
Fig. 2 is another flow chart of the method for adjustment of the source of sound yield value of the MIC sensor of the embodiment of the present invention；
Fig. 3 is a kind of structure chart of the moving camera of the embodiment of the present invention；
Fig. 4 is a kind of schematic diagram of the sports equipment of the embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The embodiment of the invention discloses a kind of method of adjustment noise-reduction methods of the source of sound yield value of MIC sensor, are applied to
Image Acquisition mobile terminal, it includes MIC sensor that described image, which acquires mobile terminal,.
Referring to Fig. 1, Fig. 1 is a kind of process of the method for adjustment of the source of sound yield value of the MIC sensor of the embodiment of the present invention
Figure, includes the following steps:
Step 101, the current acceleration and current kinetic speed of described image acquisition mobile terminal are determined；
In practical applications, in order to guarantee the intensity of MIC sensor typing source of sound, the MIC of Image Acquisition mobile terminal is passed
Sensor is typically exposed in air.User carries Image Acquisition mobile terminal and rides or the case where other high-speed motions
Under, since high-speed motion can generate higher wind speed, the wind noise of MIC sensor input audio is exacerbated, also, wind speed is excessive
The input audio that will lead to MIC sensor generates unsweet sound phenomenon.Therefore, the embodiment of the present invention is by adjusting for MIC sensor
The source of sound yield value of source of sound is inputted, the wind resistance for improving MIC sensor is made an uproar ability, makes the signal-to-noise ratio of MIC sensor input source of sound more
It is good.
In embodiments of the present invention, Image Acquisition mobile terminal can be moving camera, be set to bicycle, motorcycle,
On the high-speed moving objects such as speedboat, parachute, for recording or shooting in high-speed motion bat；Wherein, Image Acquisition is mobile
Microphone MIC sensor, acceleration transducer, velocity sensor and processor are provided in terminal.
In this step, Image Acquisition is obtained according to preset period distances by the processor of Image Acquisition mobile terminal
The current acceleration and current kinetic speed of mobile terminal；Wherein, preset period distances can choose 10ms, 20ms, 30ms,
Any value in 40ms, 50ms, 60ms, 70ms, 80ms, 90ms, 100ms, or take the arbitrary value between 10ms~100ms；
Wherein, processor can be cpu chip.
Specifically, processor can determine the current acceleration of Image Acquisition mobile terminal by acceleration transducer, with
And the current kinetic speed of Image Acquisition mobile terminal is obtained by velocity sensor, wherein velocity sensor, which can be, to be had
The alignment sensor of calculating speed function, such as GPS (Globle Positioning System, GPS)
Chip and Beidou satellite navigation system (BeiDou Navigation Satellite System, BDS) chip.
For movement velocity, current point in time can also be first obtained by the alignment sensor with calculating speed function with before
The location information at one time point, further according to above-mentioned two time point location information determine between above-mentioned two time point away from
Deviation calculates the current fortune of Image Acquisition mobile terminal finally according to the time difference of above-mentioned range difference and above-mentioned two time point
Dynamic speed.
Step 102, according to the positive and negative situation of the current acceleration and the variation tendency of the current kinetic speed,
Judge whether the tone-entering hole of the MIC sensor is consistent towards the direction of motion for acquiring mobile terminal with described image；
In this step, by the processor of Image Acquisition mobile terminal according to Image Acquisition mobile terminal current acceleration
The variation tendency of positive and negative situation and Image Acquisition mobile terminal current kinetic speed, judges the tone-entering hole direction of MIC sensor
It is whether consistent with the direction of motion of Image Acquisition mobile terminal.
Specifically, when the current acceleration of Image Acquisition mobile terminal is working as positive value or Image Acquisition mobile terminal
Preacceleration is that the variation tendency of negative value but movement velocity is when gradually becoming smaller, and the tone-entering hole of MIC sensor with image towards adopting
The direction of motion for collecting mobile terminal is consistent；When the variation that the current acceleration of Image Acquisition mobile terminal is negative value and movement velocity
Trend is when becoming larger, and the tone-entering hole direction of MIC sensor is inconsistent with the direction of motion of Image Acquisition mobile terminal.
It should be noted that under normal conditions, MIC sensor is located on " the preceding face " of Image Acquisition mobile terminal；Work as MIC
When the tone-entering hole direction of sensor is consistent with the direction of motion of Image Acquisition mobile terminal, illustrate in Image Acquisition mobile terminal
In motion process, the MIC sensor for being located at Image Acquisition mobile terminal " preceding face " " faces " advance of Image Acquisition mobile terminal
Direction, in this way, the wind to come head-on can directly pour into the tone-entering hole of MIC sensor, when wind speed is higher, because the wind that wind generates is made an uproar
Sound is more serious, is affected to the quality of MIC sensor input audio.
In one preferred embodiment of the invention, if the tone-entering hole of the MIC sensor is acquired towards with described image
The direction of motion of mobile terminal is inconsistent, the method also includes:
The current input source of sound yield value of MIC sensor input source of sound is adjusted to preset gain value.
Specifically, being said when the tone-entering hole of MIC sensor direction is inconsistent with the direction of motion of Image Acquisition mobile terminal
It is bright in the motion process of Image Acquisition mobile terminal, be located at Image Acquisition mobile terminal " preceding face " MIC sensor " facing away from "
The direction of advance of Image Acquisition mobile terminal, the wind speed for pouring into the tone-entering hole of MIC sensor is lower, because wind generate wind noise compared with
It is also smaller on the influence of the quality of MIC sensor input audio to be slight, therefore, MIC sensor can be inputted into the current of source of sound
Input source of sound yield value is adjusted to preset gain value；Preset gain value is likely larger than current input source of sound yield value, it is also possible to small
In currently input source of sound yield value, can specifically determine according to the actual situation.
Step 103, if the direction of motion one of the tone-entering hole direction of the MIC sensor and described image acquisition mobile terminal
It causes, then turns the current input source of sound yield value of the MIC sensor down.
In this step, the tone-entering hole direction by the processor of Image Acquisition mobile terminal in MIC sensor is adopted with image
Under the direction of motion unanimous circumstances for collecting mobile terminal, by the audio chip of Image Acquisition mobile terminal, MIC sensor is turned down
Current input source of sound yield value, with reduce input MIC sensor wind noise.
In another preferred embodiment of the invention, " the current input sound of the MIC sensor is turned down in step 103
Source gain value ", can specifically include:
According to the corresponding relationship of preset movement velocity and input source of sound yield value, determine that the current kinetic speed is corresponding
Target input source of sound yield value；
Judge the MIC sensor current input source of sound yield value and the target input source of sound yield value whether one
It causes；Source of sound yield value is inputted if it has not, then adjusting the current input source of sound yield value to the target.
In practical applications, multiple movement velocitys can be preset and input the corresponding relationship of source of sound yield value, it can be with
It is the corresponding input source of sound yield value of a movement velocity, is also possible to the corresponding input source of sound gain of multiple movement velocitys
Value, can determine according to actual needs.
Specifically, firstly, determining Image Acquisition according to the corresponding relationship of preset movement velocity and input source of sound yield value
The corresponding target of the current kinetic speed of mobile terminal inputs source of sound yield value；It should be understood that target inputs source of sound yield value
Refer in the case where current kinetic speed, when the input audio yield value of MIC sensor is that target inputs source of sound yield value,
The input audio quality of MIC sensor is preferable, it is audio property make an uproar it is relatively high；
Then, judge whether current input source of sound yield value and the target input source of sound yield value of MIC sensor are consistent, if
Be it is no, then by the current input source of sound yield value of MIC sensor adjust to target input source of sound yield value, if it has, then being not required to
The current input source of sound yield value of MIC sensor is adjusted.
In practical applications, movement velocity can be as shown in table 1 with the corresponding relationship of input source of sound yield value:
| Movement velocity (m/s) | Target inputs source of sound yield value (dB) |
| 2 | 30 |
| 5 | 20 |
| 10 | 10 |
Table 1
In table 1, when movement velocity is 2m/s, corresponding target input source of sound yield value is 30dB；Work as movement velocity
When for 5m/s, corresponding target input source of sound yield value is 20dB；When movement velocity is 10m/s, corresponding target inputs sound
Source gain value is 10dB.In the specific implementation process, can according to the actual situation under, multiple movement velocitys and target are set and inputted
The corresponding relationship of source of sound yield value.
Further, in order to expand MIC sensor described in the embodiment of the present invention source of sound yield value method of adjustment
Use scope, it is in another preferred embodiment of the invention, described according to preset movement velocity and input source of sound yield value
Corresponding relationship, the step of determining the current kinetic speed corresponding target input source of sound yield value, can specifically include:
According to the preset table of comparisons, target speed section locating for the current kinetic speed, the control are determined
Table includes the corresponding relationship at least one movement velocity section and input source of sound yield value；
According to the table of comparisons, the corresponding target input source of sound yield value in the target speed section is determined.
In practical applications, the table of comparisons can be preset, the table of comparisons includes multiple movement velocity sections and input source of sound
The corresponding relationship of yield value, wherein the corresponding input source of sound yield value in a movement velocity section；Specifically, first compareing
Target speed section locating for current movement velocity is determined in table, then determines that target velocity section is corresponding in the table of comparisons
Target input source of sound yield value.In this way, can not only expand the source of sound yield value of MIC sensor described in the embodiment of the present invention
Method of adjustment use scope, and can be improved the working efficiency of processor in Image Acquisition mobile terminal.
In specific implementation, for the operating procedure of simplified processor, " the current input of the MIC sensor is being turned down
Before the step of source of sound yield value ", the method also includes:
Judge whether the current kinetic speed is more than pre-set velocity threshold value；
If the current kinetic speed is more than pre-set velocity threshold value, the current of the MIC sensor is turned down described in execution
The step of inputting source of sound yield value.
Specifically, only in the case where the current kinetic speed of Image Acquisition mobile terminal is more than pre-set velocity threshold value,
Processor can just turn the current input source of sound yield value of MIC sensor down, that is to say, that in working as Image Acquisition mobile terminal
Preceding movement velocity is lower, input the wind noise of MIC sensor it is relatively slight in the case where, processor is without working as MIC sensor
Preceding input source of sound yield value is adjusted；It should be noted that when using the table of comparisons to illustrate movement velocity and input source of sound gain
When the corresponding relationship of value, pre-set velocity threshold value can be the lower limit value of minimum movement speed interval in the table of comparisons.In this way, guaranteeing
Under the premise of MIC sensor inputs the quality of source of sound, the operating procedure of simplified processor improves the working efficiency of processor.
In addition, in order to reduce the power consumption of Image Acquisition mobile terminal, in still another preferable embodiment of the invention, institute
State method further include:
When the acceleration transducer and the velocity sensor are in suspend mode, described image acquisition movement is judged
Terminal whether setting in motion, if it has, then the acceleration transducer and the velocity sensor are switched to normal work mould
Formula；
When the acceleration transducer and the velocity sensor are in the normal mode of operation, judge described current
Whether the variable quantity of acceleration is less than preset acceleration delta threshold, and the variable quantity is less than the acceleration delta threshold
Duration whether be more than preset quiescent time threshold value, the variable quantity includes the acceleration transducer in current preset
Sampling period collected acceleration, it is collected with the previous default sampling period before the current preset sampling period
Difference between acceleration.
Wherein, the acceleration of described image acquisition mobile terminal is determined by the acceleration transducer, and by the speed
Degree sensor determines the movement velocity of described image acquisition mobile terminal.
In practical applications, when user needs to be recorded or recorded using Image Acquisition mobile terminal during the motion
When picture, Image Acquisition mobile terminal can be set to intelligent wind and made an uproar anti-distorsion mode, at this point, in Image Acquisition mobile terminal
The method of adjustment of the source of sound yield value of MIC sensor described in processor meeting according to embodiments of the present invention, it is mobile to Image Acquisition
The current input source of sound yield value of MIC sensor is adjusted in terminal.
In order to save the battery capacity of Image Acquisition mobile terminal, make an uproar when Image Acquisition mobile terminal is arranged to intelligent wind
When anti-distorsion mode, acceleration transducer and velocity sensor in Image Acquisition mobile terminal are in suspend mode, wherein
Suspend mode post-acceleration sensor is arranged to down trigger (wake motion) mode.Next, being passed by the acceleration in suspend mode
Sensor come detection image acquisition mobile terminal whether setting in motion；If Image Acquisition mobile terminal setting in motion, it is in suspend mode
The acceleration transducer wake-up processor of mode namely down trigger mode is passed acceleration transducer and speed by processor
Sensor is switched to normal mode of operation from suspend mode, and acceleration transducer and velocity sensor is made to can determine that Image Acquisition is moved
The current acceleration and current kinetic speed of dynamic terminal, so that processor can be to the current input source of sound gain of MIC sensor
Value is adjusted.
Meanwhile in the case where acceleration transducer and velocity sensor are in the scene of normal mode of operation, processor is by adding
Velocity sensor, the motion state of continuous detection image acquisition mobile terminal；Scheme when processor is determined by acceleration transducer
As the variable quantity of the acceleration of acquisition mobile terminal is less than predetermined acceleration delta threshold, and the acceleration of Image Acquisition mobile terminal
When the duration that the variable quantity of degree is less than predetermined acceleration delta threshold is more than default quiescent time threshold value, illustrate Image Acquisition
Mobile terminal stop motion, remains static, wherein the variable quantity of acceleration refers to acceleration transducer current pre-
If sampling period collected acceleration, with the previous default sampling period before the current preset sampling period it is collected plus
Difference between speed, default sampling period can be arranged according to the actual situation；At this point, processor by acceleration transducer and
Velocity sensor is switched to suspend mode, to save the battery capacity of Image Acquisition mobile terminal.
As it can be seen that in embodiments of the present invention, it can be in the tone-entering hole direction and Image Acquisition mobile terminal of MIC sensor
Under the identical scene of the direction of motion, by turning the current input source of sound yield value of MIC sensor down, to reduce input MIC sensing
The wind noise of device can not only improve the quality of MIC sensor input source of sound, and without carrying out to Image Acquisition mobile terminal
HardwareUpgring avoids the hardware cost for increasing Image Acquisition mobile terminal.
Below by specific embodiment, the adjustment side of the source of sound yield value of the MIC sensor described in the embodiment of the present invention
Method is described in detail, as shown in Fig. 2, Fig. 2 is the method for adjustment of the source of sound yield value of the MIC sensor of the embodiment of the present invention
Another flow chart:
Step 201, when the acceleration transducer of Image Acquisition mobile terminal and velocity sensor are in suspend mode,
Judge Image Acquisition mobile terminal whether setting in motion；If it is, thening follow the steps 202；
It makes an uproar anti-distorsion mode at this point, Image Acquisition mobile terminal is set as intelligent wind；When acceleration transducer and speed pass
When sensor is in suspend mode, the current acceleration and current kinetic speed of Image Acquisition mobile terminal can not be determined, to subtract
Few power consumption.
Step 202, the acceleration transducer of Image Acquisition mobile terminal and velocity sensor are switched to normal work mould
Formula；
It should be noted that can be determined when transporting acceleration transducer and velocity sensor is in normal mode of operation
The current acceleration and current kinetic speed of Image Acquisition mobile terminal.
Step 203, the current acceleration of Image Acquisition mobile terminal is determined by acceleration transducer, and by velocity pick-up
Device determines the current kinetic speed of Image Acquisition mobile terminal；
Step 204, mobile eventually according to the positive and negative situation and Image Acquisition of the current acceleration of Image Acquisition mobile terminal
The variation tendency of the current kinetic speed at end judges the tone-entering hole direction and figure of the MIC sensor in Image Acquisition mobile terminal
As whether the direction of motion of acquisition mobile terminal is consistent；If it is, 206 are thened follow the steps, if it has not, thening follow the steps 205；
Step 205；The current input source of sound yield value of MIC sensor input source of sound is adjusted to preset gain value；It executes
Step 203；
Wherein, preset gain value can be arranged according to the actual situation.
In this step, the current input source of sound yield value of MIC sensor input source of sound is being adjusted to preset gain value
Later, 203 are returned to step, continues to judge whether to need to adjust MIC sensor input sound according to acceleration and movement velocity
The current input source of sound yield value in source.
Step 206, judge whether Image Acquisition mobile terminal remains static, if it is, 207 are thened follow the steps, if
Be it is no, then follow the steps 208；
Specifically, when processor by acceleration transducer determine Image Acquisition mobile terminal acceleration variable quantity it is small
In predetermined acceleration delta threshold, and the variable quantity of the acceleration of Image Acquisition mobile terminal is less than predetermined acceleration delta threshold
Duration when being more than default quiescent time threshold value, illustrate the stop motion of Image Acquisition mobile terminal, be in static shape
State, wherein the variable quantity of acceleration specifically can be acceleration transducer in current preset sampling period collected acceleration,
With the difference between the previous default sampling period collected acceleration before the current preset sampling period；Quiescent time threshold
Value can be preset as 60s, and acceleration delta threshold can be preset as 0.2G (1G=9.81M/S2), it is of course also possible to according to reality
Border situation carrys out flexible setting.
Step 207, acceleration transducer and velocity sensor are switched to suspend mode；Execute step 201；
In this step, it when Image Acquisition mobile terminal remains static, no longer needs to determine current acceleration and work as
Therefore acceleration transducer and velocity sensor can be switched to suspend mode by preceding movement velocity again；It is passed by acceleration
Sensor and velocity sensor are switched to after suspend mode, return to step 201, so that acceleration transducer and velocity pick-up
Device is in Image Acquisition mobile terminal setting in motion, then is switched to normal mode of operation again.
Step 208, judge whether the current kinetic speed of Image Acquisition mobile terminal is more than in the preset table of comparisons, is minimum
The lower limit value in movement velocity section；If it is, thening follow the steps 209；If it has not, thening follow the steps 213；
Specifically, the table of comparisons is as shown in table 2,
| Movement velocity section (m/s) | Target inputs source of sound yield value (dB) |
| [2,5) | 30 |
| [5,10) | 20 |
| [10,+∞) | 10 |
Table 2
In table 2, list [2,5), [5,10) and [10 ,+∞) these three movement velocity sections respectively with target input
The corresponding relationship of source of sound yield value, wherein and movement velocity section [2,5) corresponding target input source of sound yield value is 30dB, fortune
Dynamic speed interval [5,10) corresponding target input source of sound yield value is 20dB, movement velocity section [10 ,+∞) corresponding target
Input source of sound yield value is 10dB；Wherein, the lower limit value of minimum movement speed interval is 2m/s.
Step 209；According to the preset table of comparisons, target locating for the current kinetic speed of Image Acquisition mobile terminal is determined
Movement velocity section；
Step 210, according to the table of comparisons, the corresponding target input source of sound yield value in target speed section is determined；
Step 211, judge MIC sensor current input source of sound yield value and target input source of sound yield value whether one
It causes；If it has not, 212 are thened follow the steps, if it is, thening follow the steps 213；
Step 212, the current input source of sound yield value of MIC sensor is adjusted to target and inputs source of sound yield value, executed
Step 203；
Step 213, the current input source of sound yield value of the MIC sensor is not adjusted, executes step 203.
In step 212 and 213, source of sound is inputted adjusting the current input source of sound yield value of MIC sensor to target
After yield value or the determining current input source of sound yield value for not adjusting the MIC sensor, 203 are returned to step, after
The continuous current input source of sound yield value for being judged whether to need to adjust MIC sensor input source of sound according to acceleration and movement velocity.
In practical applications, when user rides downwards from eminence, Image Acquisition mobile terminal camera lens is facing forward, MIC sensing
The tone-entering hole of device is on " the preceding face " of Image Acquisition mobile terminal camera lens, and processing step according to Fig.2, is to MIC sensor
Current input source of sound yield value is adjusted；
When user starts to ride down from eminence, the acceleration transducer and velocity sensor of Image Acquisition mobile terminal
It is switched to normal mode of operation；The movement velocity of speed namely Image Acquisition mobile terminal that user rides is getting faster, until
When the current kinetic speed of Image Acquisition mobile terminal is more than the lower limit value of minimum movement speed interval in the table of comparisons, Image Acquisition
The processor of mobile terminal starts the movement velocity section according to locating for current kinetic speed, is gradually turned down by Audio Controller
By the current input source of sound yield value of MIC sensor；
After user rides to level land when degree of reducing speed now, the movement velocity of Image Acquisition mobile terminal is gradually dropped from 10ms
To 2m/s；Since the wind noise generated when movement velocity is lower is also smaller, if the current input source of sound of MIC sensor increases
When the corresponding target of movement velocity that beneficial value remains at 10ms inputs source of sound yield value 10dB, input MIC sensor will lead to
Audio volume it is too low；So, the processor of Image Acquisition mobile terminal can gradually tune up MIC biography by Audio Controller
The current input source of sound yield value of sensor finally tunes up the current input source of sound yield value of MIC sensor to the movement speed of 2ms
Corresponding target input source of sound yield value 30DB is spent, to guarantee the audio volume of input MIC sensor；
When user is finally stopped, and determines that Image Acquisition mobile terminal remains static, Image Acquisition is mobile eventually
Acceleration transducer and velocity sensor are switched to suspend mode by the processor at end, to reduce Image Acquisition battery of mobile terminal
Power consumption.
As it can be seen that above-mentioned specific embodiment can work as MIC sensor according to the movement velocity of Image Acquisition mobile terminal
Preceding input source of sound yield value is adjusted, and to reduce the wind noise of input MIC sensor, is improved user and is inputted MIC sensor
Audio quality, meanwhile, electricity is saved, the stand-by time of Image Acquisition mobile terminal is extended.
The embodiment of the present invention discloses a kind of moving camera again, sees that Fig. 3, Fig. 3 are the moving camera of the embodiment of the present invention
A kind of structure chart, in Fig. 3, be provided on the moving camera 301 microphone MIC sensor 302, acceleration transducer 303,
Velocity sensor 304, processor 305 and audio processor 306；
The acceleration transducer 303, for determining the current acceleration of the moving camera 301；
The velocity sensor 304, for determining the current kinetic speed of the moving camera 301；
The processor 305, for according to the positive and negative situation of the current acceleration and the current kinetic speed
Variation tendency judges whether the tone-entering hole direction of the MIC sensor 302 is consistent with the direction of motion of the moving camera 301；
If it has, then turning the current input source of sound yield value of the MIC sensor 302 down by the audio processor 306.
In practical applications, audio processor 306 can be audio chip；Processor 305, which passes through, opens a timer,
For example MIC sensor 302 is arranged by audio chip 306 according to predetermined period in 200HZ timer, predetermined period 5ms
The relevant parameter for inputting source of sound yield value, makes the gain reduction or increase of MIC sensor.
Preferably, the processor 305 is also used to judge whether the current kinetic speed is more than pre-set velocity threshold value；
If the current kinetic speed is more than pre-set velocity threshold value, the MIC sensor is turned down by the audio processor 306
302 current input source of sound yield value.
Preferably, the processor 305, specifically for corresponding with input source of sound yield value according to preset movement velocity
Relationship determines the corresponding target input source of sound yield value of the current kinetic speed；Judge the current of the MIC sensor 302
It inputs source of sound yield value and whether target input source of sound yield value is consistent；If it has not, then passing through the audio processor 306
The current input source of sound yield value is adjusted to the target and inputs source of sound yield value.
Preferably, the processor 305 is specifically used for determining the current kinetic speed institute according to the preset table of comparisons
The target speed section at place, the table of comparisons include that at least one movement velocity section is corresponding with input source of sound yield value
Relationship；According to the preset table of comparisons, the corresponding target input source of sound yield value in the target speed section is determined.
Preferably, the processor 305 is also used to by the audio processor 306 that the MIC sensor 302 is defeated
The current input source of sound yield value for entering source of sound is adjusted to preset gain value.
Preferably, the processor 305 is also used at the acceleration transducer 303 and the velocity sensor 304
When suspend mode, judge the moving camera 301 whether setting in motion, if it has, then by 303 He of acceleration transducer
The velocity sensor 304 is switched to normal mode of operation；When the acceleration transducer 303 and the velocity sensor 304
When in the normal mode of operation, judge whether the variable quantity of the current acceleration is less than preset acceleration increment threshold
Value, and the variable quantity is less than whether the duration of the acceleration delta threshold is more than preset quiescent time threshold value, institute
Stating variable quantity includes the acceleration transducer 303 in current preset sampling period collected acceleration, and described current
The difference between previous default sampling period collected acceleration before the default sampling period；If it has, then described in determining
Moving camera 301 remains static, and the acceleration transducer 303 and the velocity sensor 304 are switched to described stop
Sleep mode.
In addition, in the specific implementation process, in addition to moving camera described in the embodiment of the present invention is in addition to using implementation of the present invention
The method of adjustment of the source of sound yield value of MIC sensor described in example, also can be used other adjustment modes, such as pid algorithm etc.,
To realize optimizing and revising to the source of sound yield value of MIC sensor.
As it can be seen that in embodiments of the present invention, it can be in the direction of motion of the tone-entering hole direction and moving camera of MIC sensor
Under identical scene, by turning the current input source of sound yield value of MIC sensor down, make an uproar to reduce the wind of input MIC sensor
Sound can not only improve the quality of MIC sensor input source of sound, and without carrying out HardwareUpgring to moving camera, avoid increasing
Add the hardware cost of moving camera.
The embodiment of the invention also provides a kind of sports equipments, as shown in figure 4, the movement that Fig. 4 is the embodiment of the present invention is set
A kind of standby schematic diagram.Sports equipment includes processor 401, communication interface 402, memory 403 and communication bus 404, wherein
Processor 401, communication interface 402, memory 403 complete mutual communication by communication bus 404,
Memory 403, for storing computer program；
Processor 401 when for executing the program stored on memory xx3, realizes following steps:
Determine the current acceleration and current kinetic speed of the sports equipment；
According to the positive and negative situation of the current acceleration and the variation tendency of the current kinetic speed, described in judgement
Whether the tone-entering hole direction of MIC sensor is consistent with the direction of motion of the sports equipment；
If it has, then turning the current input source of sound yield value of the MIC sensor down.
The communication bus that above-mentioned sports equipment is mentioned can be Peripheral Component Interconnect standard (Peripheral Component
Interconnect, PCI) bus or expanding the industrial standard structure (Extended Industry Standard
Architecture, EISA) bus etc..The communication bus can be divided into address bus, data/address bus, control bus etc..For just
It is only indicated with a thick line in expression, figure, it is not intended that an only bus or a type of bus.
Communication interface is for the communication between above-mentioned sports equipment and other equipment.
Memory may include random access memory (Random Access Memory, RAM), also may include non-easy
The property lost memory (Non-Volatile Memory, NVM), for example, at least a magnetic disk storage.Optionally, memory may be used also
To be storage device that at least one is located remotely from aforementioned processor.
Above-mentioned processor can be general processor, including central processing unit (Central Processing Unit,
CPU), network processing unit (Network Processor, NP) etc.；It can also be digital signal processor (Digital Signal
Processing, DSP), it is specific integrated circuit (Application Specific Integrated Circuit, ASIC), existing
It is field programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic device, discrete
Door or transistor logic, discrete hardware components.
As it can be seen that sports equipment provided in an embodiment of the present invention, it can be in the tone-entering hole direction and sports equipment of MIC sensor
The identical scene of the direction of motion under, by turning the current input source of sound yield value of MIC sensor down, come reduce input MIC pass
The wind noise of sensor can not only improve the quality of MIC sensor input source of sound, and without carrying out hardware liter to sports equipment
Grade avoids the hardware cost for increasing sports equipment.
The embodiment of the invention also provides a kind of computer readable storage medium, the computer readable storage medium memory
Computer program is contained, when the computer program is executed by processor, realizes following steps:
Determine the current acceleration and current kinetic speed of described image acquisition mobile terminal；
According to the positive and negative situation of the current acceleration and the variation tendency of the current kinetic speed, described in judgement
Whether the tone-entering hole of MIC sensor is consistent towards the direction of motion for acquiring mobile terminal with described image；
If it has, then turning the current input source of sound yield value of the MIC sensor down.
As it can be seen that computer readable storage medium provided in an embodiment of the present invention, it can be in the tone-entering hole direction of MIC sensor
Under scene identical with the direction of motion of Image Acquisition mobile terminal, by the current input source of sound gain for turning MIC sensor down
Value, come reduce input MIC sensor wind noise, can not only improve MIC sensor input source of sound quality, and without pair
Image Acquisition mobile terminal carries out HardwareUpgring, avoids the hardware cost for increasing Image Acquisition mobile terminal.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
Each embodiment in this specification is all made of relevant mode and describes, same and similar portion between each embodiment
Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.Especially for system reality
For applying example, since it is substantially similar to the method embodiment, so being described relatively simple, related place is referring to embodiment of the method
Part explanation.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.It is all
Any modification, equivalent replacement, improvement and so within the spirit and principles in the present invention, are all contained in protection scope of the present invention
It is interior.
Claims (14)
1. a kind of method of adjustment of the source of sound yield value of microphone MIC sensor, which is characterized in that it is mobile to be applied to Image Acquisition
Terminal, it includes MIC sensor that described image, which acquires mobile terminal, which comprises
Determine the current acceleration and current kinetic speed of described image acquisition mobile terminal；
According to the positive and negative situation of the current acceleration and the variation tendency of the current kinetic speed, judge that the MIC is passed
Whether the tone-entering hole of sensor is consistent towards the direction of motion for acquiring mobile terminal with described image；
If it has, then turning the current input source of sound yield value of the MIC sensor down.
2. the method according to claim 1, wherein the current input source of sound for turning the MIC sensor down
Before the step of yield value, the method also includes:
Judge whether the current kinetic speed is more than pre-set velocity threshold value；
If the current kinetic speed is more than pre-set velocity threshold value, the current input of the MIC sensor is turned described in execution down
The step of source of sound yield value.
3. method according to claim 1 or 2, which is characterized in that the current input sound for turning the MIC sensor down
The step of source gain value, comprising:
According to the corresponding relationship of preset movement velocity and input source of sound yield value, the corresponding mesh of the current kinetic speed is determined
Mark input source of sound yield value；
Judge whether current input source of sound yield value and the target input source of sound yield value of the MIC sensor are consistent；If
Be it is no, then by the current input source of sound yield value adjust to the target input source of sound yield value.
4. according to the method described in claim 3, it is characterized in that, described according to preset movement velocity and input source of sound gain
The corresponding relationship of value determines the step of corresponding target of the current kinetic speed inputs source of sound yield value, comprising:
According to the preset table of comparisons, target speed section locating for the current kinetic speed, the table of comparisons packet are determined
It includes at least one movement velocity section and inputs the corresponding relationship of source of sound yield value；
According to the table of comparisons, the corresponding target input source of sound yield value in the target speed section is determined.
5. according to the method described in claim 1, if the tone-entering hole of the MIC sensor is mobile whole towards acquiring with described image
The direction of motion at end is inconsistent, the method also includes:
The current input source of sound yield value of MIC sensor input source of sound is adjusted to preset gain value.
6. the method according to claim 1, wherein described image acquisition mobile terminal further includes acceleration sensing
Device and velocity sensor；The acceleration of described image acquisition mobile terminal is determined by the acceleration transducer, and by described
Velocity sensor determines the movement velocity of described image acquisition mobile terminal；
The method also includes:
When the acceleration transducer and the velocity sensor are in suspend mode, judge that described image acquires mobile terminal
Whether setting in motion, if it has, then the acceleration transducer and the velocity sensor are switched to normal mode of operation；
When the acceleration transducer and the velocity sensor are in the normal mode of operation, judgement is described to work as preacceleration
Whether the variable quantity of degree is less than preset acceleration delta threshold, and the variable quantity is less than holding for the acceleration delta threshold
Whether the continuous time is more than preset quiescent time threshold value, and the variable quantity includes that the acceleration transducer is sampled in current preset
Period collected acceleration, with the previous default sampling period collected acceleration before the current preset sampling period
Difference between degree；
If it has, then determining that described image acquisition mobile terminal remains static, by the acceleration transducer and the speed
Degree sensor is switched to the suspend mode.
7. a kind of moving camera, which is characterized in that be provided with microphone MIC sensor, acceleration sensing on the moving camera
Device, velocity sensor, processor and audio processor；
The acceleration transducer, for determining the current acceleration of the moving camera；
The velocity sensor, for determining the current kinetic speed of the moving camera；
The processor, the variation for positive and negative situation and the current kinetic speed according to the current acceleration become
Gesture judges whether the tone-entering hole direction of the MIC sensor is consistent with the direction of motion of the moving camera；If it has, then logical
Cross the current input source of sound yield value that the audio processor turns the MIC sensor down.
8. moving camera according to claim 7, which is characterized in that
The processor is also used to judge whether the current kinetic speed is more than pre-set velocity threshold value；If the current kinetic
Speed is more than pre-set velocity threshold value, then turns the current input source of sound gain of the MIC sensor down by the audio processor
Value.
9. moving camera according to claim 7 or 8, which is characterized in that
The processor, described in determining according to preset movement velocity and the corresponding relationship for inputting source of sound yield value
The corresponding target of current kinetic speed inputs source of sound yield value；Judge the current input source of sound yield value of the MIC sensor with
Whether the target input source of sound yield value is consistent；If it has not, then by the audio processor by the current input source of sound
Yield value adjusts to the target and inputs source of sound yield value.
10. moving camera according to claim 9, which is characterized in that
The processor is specifically used for determining the movement speed of target locating for the current kinetic speed according to the preset table of comparisons
Section is spent, the table of comparisons includes the corresponding relationship at least one movement velocity section and input source of sound yield value；According to default
The table of comparisons, determine the target speed section corresponding target input source of sound yield value.
11. moving camera according to claim 7, which is characterized in that
The processor is also used to input the MIC sensor by the audio processor the current input source of sound of source of sound
Yield value is adjusted to preset gain value.
12. moving camera according to claim 7, which is characterized in that
The processor is also used to judge institute when the acceleration transducer and the velocity sensor are in suspend mode
State moving camera whether setting in motion, if it has, then the acceleration transducer and the velocity sensor are switched to normally
Operating mode；When the acceleration transducer and the velocity sensor are in the normal mode of operation, work as described in judgement
Whether the variable quantity of preacceleration is less than preset acceleration delta threshold, and the variable quantity is less than the acceleration increment threshold
Whether the duration of value is more than preset quiescent time threshold value, and the variable quantity includes the acceleration transducer current pre-
If sampling period collected acceleration, collected with the previous default sampling period before the current preset sampling period
Acceleration between difference；If it has, then determine that the moving camera remains static, by the acceleration transducer and
The velocity sensor is switched to the suspend mode.
13. a kind of sports equipment, which is characterized in that including processor, communication interface, memory and communication bus, wherein processing
Device, communication interface, memory complete mutual communication by communication bus；
Memory, for storing computer program；
Processor when for executing the program stored on memory, realizes any method and step of claim 1-6.
14. a kind of computer readable storage medium, which is characterized in that be stored with computer in the computer readable storage medium
Program realizes claim 1-6 any method and step when the computer program is executed by processor.
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Address after: 310051 Room 301, building B, building 2, No. 399, Danfeng Road, Binjiang District, Hangzhou City, Zhejiang Province Patentee after: Hangzhou fluorite Network Co.,Ltd. Address before: 7 / F, building 1, No. 700, Dongliu Road, Changhe street, Binjiang District, Hangzhou City, Zhejiang Province 310000 Patentee before: HANGZHOU EZVIZ NETWORK Co.,Ltd. |