CN103888580B - Noise reduction process method and terminal in a kind of terminal Recording Process - Google Patents
Noise reduction process method and terminal in a kind of terminal Recording Process Download PDFInfo
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- CN103888580B CN103888580B CN201410126822.4A CN201410126822A CN103888580B CN 103888580 B CN103888580 B CN 103888580B CN 201410126822 A CN201410126822 A CN 201410126822A CN 103888580 B CN103888580 B CN 103888580B
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Abstract
Noise reduction process method and terminal in the open a kind of terminal Recording Process of the present invention, utilize call in two the mike acquisition terminal Recording Process being arranged on diverse location start to end of conversation during this period of time in mixing sound；The mixing sound during this period of time collected by said two mike processes according to preset algorithm, obtains the target recorded voice in during this period of time.The present invention, by above technical scheme, solves existing terminal and the call in Recording Process is processed incomplete problem.
Description
Technical field
The present invention relates to electronic technology field, particularly relate in a kind of terminal Recording Process noise reduction process method and
Terminal.
Background technology
At present, most of terminal has recording the most simultaneously and (includes purely recording, and video recording sound intermediate frequency
The recording of data) and call (speech communication including, but not limited in cell phone incoming call, immediate communication tool)
Function.But, call in Recording Process is processed and imperfection by existing terminal, and a kind of processing mode is call
Terminating ongoing Recording Process while beginning, another kind of processing mode is to maintain recording constantly, but
Being mingled with the call sound of user in the sound recorded, recorded file is of low quality.
As a example by mobile phone, user typically encounters the situation having incoming call in Recording Process, and existing mobile phone is once used
Incoming call has been connected at family, or terminates ongoing Recording Process simultaneously, or keeps recording constantly, but
The sound recorded is mingled with the call sound of user.
Summary of the invention
The present invention provides noise reduction process method and terminal in a kind of terminal Recording Process, solves existing terminal to record
Call during sound processes incomplete problem.
For solve above-mentioned technical problem, the present invention by the following technical solutions:
A kind of terminal, including signal processing module, and two mikes being arranged on diverse location, its
In, the call in acquisition terminal Recording Process of said two mike starts to end of conversation interior during this period of time
Mixing sound；Described signal processing module is for during this period of time collecting said two mike
Mixing sound processes according to preset algorithm, obtains the target recorded voice in during this period of time.
Further, described signal processing module includes: attenuation quotient determines module, is used for determining that sound is from
One mike is to the attenuation quotient between second microphone；And signal processing submodule, for according to described
Attenuation quotient determines that described first mike is during this period of time collected by the described attenuation quotient that module determines
Mixing sound be simulated decay after, the compound voice during this period of time collected with described second microphone
Sound compares, and obtains the target recorded voice in during this period of time.
Further, described first mike is main mike, and described second microphone is secondary mike.
Further, this terminal also includes judge module, is used for judging that described main mike is during this period of time adopted
Whether the intensity of the mixing sound that collection arrives is more than or equal to preset value.
Further, this terminal also includes concatenation module, when this section obtained by described signal processing module
Interior target recorded voice, call start the front sound recorded, and the sound recorded after end of conversation enters
Row splicing, obtains whole recording file.
A kind of noise reduction process method in terminal Recording Process, including: utilize two be arranged on diverse location
In mike acquisition terminal Recording Process call start to end of conversation during this period of time in mixing sound；By institute
State the mixing sound that two mikes during this period of time collect to process according to preset algorithm, obtain this
Target recorded voice in the section time.
Further, the mixing sound during this period of time collected by said two mike is according to preset algorithm
Processing, the target recorded voice obtained in during this period of time specifically includes: determine that sound is from the first mike
Attenuation quotient between second microphone；According to attenuation quotient by described first mike during this period of time
After the mixing sound that collects is simulated decay, during this period of time collect with described second microphone
Mixing sound compares, and obtains the target recorded voice in during this period of time.
Further, the mixing sound according to attenuation quotient, described first mike during this period of time collected
After being simulated decay, the mixing sound during this period of time collected with described second microphone compares,
The target recorded voice obtained in during this period of time specifically includes: during this period of time adopted by described first mike
Collect to mixing sound be multiplied by described attenuation quotient after, during this period of time collect with described second microphone
Mixing sound carry out subtraction, obtain during this period of time in target recorded voice.
Further, described first mike is the main mike in terminal, and described second microphone is in terminal
Secondary mike.
Further, the mixing sound during this period of time collected by said two mike is according to preset algorithm
Also include before processing: judge the strong of the mixing sound that described main mike during this period of time collects
Whether degree is more than or equal to preset value；The most then enter by described at least two mike during this period of time
The mixing sound collected carries out the step processed according to preset algorithm；Otherwise, directly by described secondary mike
The mixing sound during this period of time collected is as target recorded voice interior during this period of time.
Further, in this terminal Recording Process, noise reduction process method also includes: by obtained during this period of time in
Target recorded voice, call start before recording sound, and after end of conversation record sound spell
Connect, obtain whole recording file.
Noise reduction process method and terminal in the terminal Recording Process that the present invention provides, utilize and be arranged on diverse location
On two mike acquisition terminal Recording Process in call start to end of conversation during this period of time in compound voice
Sound, the mixing sound during this period of time collected by said two mike processes according to preset algorithm,
Obtain the target recorded voice in during this period of time.One side is ongoing without terminating while conversing
Recording so that call function is not affected by ongoing sound-recording function；On the other hand the most also to being recorded
Call sound in sound has carried out filtration treatment, improves the quality of recorded file.Additionally, the present invention is not
Need by extra hardware, be suitable for current most terminal and use, be especially suitable for mobile phone terminal and use.
Accompanying drawing explanation
The flow chart of noise reduction process method in the terminal Recording Process that Fig. 1 provides for one embodiment of the invention；
The schematic diagram of the terminal that Fig. 2 provides for one embodiment of the invention；
The flow chart of noise reduction process method in the terminal Recording Process that Fig. 3 provides for another embodiment of the present invention.
Detailed description of the invention
Combine accompanying drawing below by detailed description of the invention the present invention is described in further detail.
The flow chart of noise reduction process method in the terminal Recording Process that Fig. 1 provides for one embodiment of the invention, please
With reference to Fig. 1, including following flow process:
Two mike acquisition terminal Recording Process that S101, utilization are arranged on diverse location are conversed and starts
To the mixing sound that end of conversation is interior during this period of time.
Owing to call starts to end of conversation interior during this period of time in terminal Recording Process, record and converse and enter simultaneously
OK, the mixing sound that therefore these two mikes collect not only includes target recorded voice, also includes call
Sound.
S102, the mixing sound during this period of time collected by said two mike enter according to preset algorithm
Row processes, and obtains the target recorded voice in during this period of time.I.e. filter out the call sound in during this period of time,
Obtain the sound that user actually wants to record.
In certain embodiments, step S102 specifically includes:
S102a, determine sound attenuation quotient from the first mike to second microphone；
S102b, according to attenuation quotient, the mixing sound that described first mike during this period of time collects is entered
After row analog attenuation, the mixing sound during this period of time collected with described second microphone compares,
Obtain the target recorded voice in during this period of time.
Preferably, step S102b is particularly as follows: during this period of time collected by described first mike is mixed
After chorus sound is multiplied by described attenuation quotient, the compound voice during this period of time collected with described second microphone
Sound carries out subtraction, obtains the target recorded voice in during this period of time.
Preferably, the first mike is the main mike in terminal, and second microphone is the secondary Mike in terminal
Wind.When conversing, user typically speaks facing to main mike, and secondary mike distance users face is relative
More farther out, therefore, call sound has decay between main mike and secondary mike, and target recording sound
Sound decay between main mike and secondary mike is negligible.
In certain embodiments, before step S102, also include main mike is during this period of time collected
Mixing sound carry out slicing operation, it may be assumed that
Judge whether the intensity mixing sound that described main mike during this period of time collects is more than or equal to
Preset value；
The most then enter step S102, described main mike, secondary mike are during this period of time collected
Mixing sound process according to preset algorithm, obtain during this period of time in target recorded voice.
Otherwise, the mixing sound directly during this period of time collected by described secondary mike is as during this period of time
Interior target recorded voice, also corresponds to the mixed signal zero setting by interior main mike gathers during this period of time and processes.
In certain embodiments, in obtaining terminal Recording Process call start to end of conversation during this period of time in
Target recorded voice after, also include: by obtained during this period of time in target recorded voice, call
The sound recorded before starting, and after end of conversation, the sound of recording splices, and obtains whole recording file.
The sound that call is recorded after starting the sound of front recording, end of conversation all uses usual manner to record, it is preferred that
Collected by main mike.
The schematic diagram of the terminal that Fig. 2 provides for one embodiment of the invention, as in figure 2 it is shown, terminal 2 includes letter
Number processing module 21, and the first mike 22 of being arranged on diverse location and second microphone 23, its
In, the call in acquisition terminal 2 Recording Process of the first mike 22, second microphone 23 starts to logical
Words terminate mixing sound interior during this period of time；Signal processing module 21 is for by the first mike 22, second
The mixing sound that mike 23 during this period of time collects processes according to preset algorithm, when obtaining this section
Interior target recorded voice.
Preferably, signal processing module 21 includes that attenuation quotient determines module 211 and signal processing submodule
212, wherein, attenuation quotient determines that module 211 is for determining that sound is from first mike the 22 to the second Mike
Attenuation quotient between wind 23；Signal processing submodule 212 is for determining module 211 according to attenuation quotient
The mixing sound that first mike 22 is during this period of time collected by the described attenuation quotient determined is simulated
After decay, the mixing sound during this period of time collected with second microphone 23 compares, and obtains this section
Target recorded voice in time.Preferably, signal processing submodule 212 is specifically for by the first mike
After the mixing sound that 22 during this period of time collect is multiplied by described attenuation quotient, exist with second microphone 23
The mixing sound collected in during this period of time carries out subtraction, obtains the target recorded voice in during this period of time.
Preferably, the first mike 22 is main mike, and second microphone 23 is secondary mike.
Preferably, terminal 2 also includes judge module 24, is used for judging that main mike during this period of time gathers
Whether the intensity of the mixing sound arrived is more than or equal to preset value；The most then notification signal processing module 21 is entered
Enter the mixing sound that main mike and secondary mike are during this period of time collected according to preset algorithm at
Reason, obtains the target recorded voice in during this period of time；Otherwise, it is judged that module 24 directly by pair mike at this
The mixing sound collected in the section time is as target recorded voice interior during this period of time.
Preferably, terminal 2 also includes concatenation module 25, for this section obtained by signal processing module 21
The sound that target recorded voice in time, call are recorded before starting, and the sound recorded after end of conversation
Splice, obtain whole recording file.The sound that call is recorded after starting the sound of front recording, end of conversation
Sound all uses usual manner to record, it is preferred that collected by main mike.
Terminal assumed below is to have a main mike and away from main mike for the secondary mike of noise reduction
For mobile phone.Including following flow process:
Sound-recording function opened by S301, mobile phone, and the sound that main mike gathers is denoted as S0(t)。
If S302 is TBMoment has sounded incoming ring tone, at time point TBPreserve the sound that main mike gathers
S0(t), and open secondary mike, main mike and secondary mike synchronous acquisition sound, by pair mike collection
Sound be denoted as SfT (), the sound that main mike restarts to gather is denoted as V (t).
If S303 user's refusing incoming call, at the time point T of rejectionEPreserve Sf(t) and V (t), and by pair wheat
Gram wind quits work, and the sound that main mike restarts to gather is denoted as S2(t);
If user has answered incoming call, user converses facing to main mike, keeps main Mike in communication process
Wind and the mode of operation of secondary mike, at the time point T of end of conversationEPreserve Sf(t) and V (t), and by pair wheat
Gram wind quits work, and the sound that main mike restarts to gather is denoted as S2(t)；
If user does not operate until call reminding terminates, at the time point T terminatedEPreserve Sf(t) and V (t),
And pair mike is quit work, the sound that main mike restarts to gather is denoted as S2(t)。
S304, after user terminates recording operation, terminate recording time point T preserve S2(t)。
Fig. 3 be from start the time point 0 of recording to main mike the time point T that all terminates of recording and
Secondary mike gathers sound and the diagram of storage file.
S0(t) and S2What t () was recorded is all not by the sound polluted of conversing, but SfT () and V (t) are because of TBArrive
TEIncoming ring tone, call sound in during this period of time introduce noise, and due to incoming ring tone, call sound
The intensity of sound that the intensity of sound is recorded much larger than needs, therefore SfT () and V (t) can not be identified really needs
Sound to be recorded, i.e. target recorded voice.
S305, converse facing to main mike due to user, secondary mike distance users face more relatively far away from,
Therefore, call sound has decay between main mike and secondary mike, and needs the target recording sound recorded
Sound decay between main mike and secondary mike is negligible.Assume TBTo TEInterior need
The target recorded voice recorded is designated as b (t), and incoming ring tone interior during this period of time, call sound are designated as w (t).
Then have:
Wherein, β is sound attenuation quotient from main mike to secondary mike, and β is much smaller than 1.β is permissible
Obtained by test or estimation.
In order to clearly restore target recorded voice, eliminate TBTo TEIncoming ring tone in during this period of time, logical
Words sound, the mixing sound that main mike is during this period of time collected by the present embodiment is multiplied by attenuation quotient β
After, the mixing sound during this period of time collected with secondary mike carries out subtraction, obtains during this period of time
Interior target recorded voice.I.e. equation (1) is done a conversion, constructs S1(t):
S1(t)=Sf(t)-β*V(t)
=b (t)+β w (t)-β [b (t)+w (t)] (2)
=(1-β) b (t)
Because β is much smaller than 1, so S1T () is close to TBTo TEThe target recorded is needed to record in during this period of time
Sound is designated as b (t).Electrical interference is carried out more than once, it is possible to use identical process is done if had in recording process
Method is configured, and finally restores glitch-free recorded voice.
If S306 user needs the time point T obtaining all terminating to recording from the time point 0 starting recording
Between complete recorded file, then obtain S1After (t), by three sections of sound S0(t)、S1(t) and S2T () splices
Get up.
In further embodiments, before step S304, it is also possible to main mike at TBTo TEThis section
The V (t) gathered in time does slicing operation, i.e. judges that whether the intensity of sound of V (t) is more than or equal to preset value；
The most then enter step S304, otherwise it is assumed that TBTo TEIncoming ring tone in during this period of time, call sound
Sound is negligible, and interior V (t) zero setting during this period of time can be processed, i.e. need not enter step S304, directly
Meet the S during this period of time collected by secondary mikefT () is as target recorded voice b (t) interior during this period of time.
The present invention can make the interference that user is not sent a telegram here in Recording Process, it is possible to obtains and exempts from contaminated record
File processed.It is especially suitable for mobile phone.
Above content is to combine specific embodiment further description made for the present invention, it is impossible to recognize
Determine the present invention be embodied as be confined to these explanations.Ordinary skill for the technical field of the invention
For personnel, without departing from the inventive concept of the premise, it is also possible to make some simple deduction or replace,
All should be considered as belonging to protection scope of the present invention.
Claims (10)
1. a terminal, it is characterised in that include signal processing module, and be arranged on diverse location
On two mikes, wherein,
The call in acquisition terminal Recording Process of said two mike starts to end of conversation interior during this period of time
Mixing sound；
Described signal processing module is for the mixing sound during this period of time collected by said two mike
Carry out processing the call sound with in removing during this period of time according to preset algorithm, obtain the target in during this period of time
Recorded voice.
2. terminal as claimed in claim 1, it is characterised in that described signal processing module includes:
Attenuation quotient determines module, for determining sound decay from the first mike to second microphone
Coefficient；
Signal processing submodule, is used for determining that the described attenuation quotient that module determines will according to described attenuation quotient
After the mixing sound that described first mike during this period of time collects is simulated decay, with described second
The mixing sound that mike during this period of time collects compares, and obtains the target in during this period of time and records
Sound.
3. terminal as claimed in claim 2, it is characterised in that described first mike is main Mike
Wind, described second microphone is secondary mike.
4. terminal as claimed in claim 3, it is characterised in that also include judge module, be used for sentencing
Whether the intensity of the mixing sound that disconnected described main mike during this period of time collects is more than or equal to presetting
Value.
5. the terminal as described in any one of Claims 1-4, it is characterised in that also include splicing mould
Block, before the target recorded voice interior during this period of time obtained by described signal processing module, call start
The sound recorded, and after end of conversation, the sound of recording splices, and obtains whole recording file.
6. noise reduction process method in a terminal Recording Process, it is characterised in that including:
Utilizing converses in two the mike acquisition terminal Recording Process being arranged on diverse location starts to call
Mixing sound in terminating during this period of time；
The mixing sound during this period of time collected by said two mike processes according to preset algorithm
With the call sound in removing during this period of time, obtain the target recorded voice in during this period of time.
7. noise reduction process method in terminal Recording Process as claimed in claim 6, it is characterised in that
The mixing sound during this period of time collected by said two mike processes according to preset algorithm,
Target recorded voice in during this period of time specifically includes:
Determine sound attenuation quotient from the first mike to second microphone；
It is simulated according to the mixing sound that described first mike is during this period of time collected by attenuation quotient
After decay, the mixing sound during this period of time collected with described second microphone compares, and obtains this
Target recorded voice in the section time.
8. noise reduction process method in terminal Recording Process as claimed in claim 7, it is characterised in that
It is simulated decay according to the mixing sound that described first mike is during this period of time collected by attenuation quotient
After, the mixing sound during this period of time collected with described second microphone compares, when obtaining this section
Interior target recorded voice specifically includes:
After the mixing sound that described first mike during this period of time collects is multiplied by described attenuation quotient,
The mixing sound during this period of time collected with described second microphone carries out subtraction, when obtaining this section
Interior target recorded voice.
9. noise reduction process method in terminal Recording Process as claimed in claim 7, it is characterised in that
Described first mike is the main mike in terminal, and described second microphone is the secondary mike in terminal.
10. noise reduction process method in terminal Recording Process as claimed in claim 9, it is characterised in that
Before the mixing sound during this period of time collected by said two mike processes according to preset algorithm
Also include:
Judge whether the intensity mixing sound that described main mike during this period of time collects is more than or equal to
Preset value；
The most then enter mixing sound that described at least two mike is during this period of time collected according to
Preset algorithm carries out the step processed；
Otherwise, the mixing sound directly during this period of time collected by described secondary mike is as during this period of time
Interior target recorded voice.
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105575398A (en) * | 2014-10-11 | 2016-05-11 | 中兴通讯股份有限公司 | Sound noise reduction method and sound noise reduction terminal |
| CN104301537A (en) * | 2014-10-15 | 2015-01-21 | 龙旗电子(惠州)有限公司 | Noise reduction mobile phone and noise reduction method |
| CN104464729A (en) * | 2014-12-16 | 2015-03-25 | 佛山市顺德区美的电热电器制造有限公司 | Voice-control electric appliance and voice control method thereof |
| CN104599675A (en) * | 2015-02-09 | 2015-05-06 | 宇龙计算机通信科技(深圳)有限公司 | Speech processing method, device and terminal |
| CN104869209B (en) * | 2015-04-24 | 2017-12-12 | 广东小天才科技有限公司 | A kind of method and device for adjusting mobile terminal recording |
| CN106060707B (en) * | 2016-05-27 | 2021-05-04 | 北京小米移动软件有限公司 | Reverberation processing method and device |
| CN106469555B (en) * | 2016-09-08 | 2021-01-19 | 深圳市金立通信设备有限公司 | Voice recognition method and terminal |
| CN107331407B (en) * | 2017-06-21 | 2020-10-16 | 深圳市泰衡诺科技有限公司 | Method and device for reducing noise of downlink call |
| CN111356908B (en) * | 2017-09-29 | 2022-05-24 | 深圳传音通讯有限公司 | Noise reduction method and terminal |
| WO2020150993A1 (en) * | 2019-01-25 | 2020-07-30 | 深圳大学 | Scoring system and scoring method for batting sports |
| CN109951794A (en) * | 2019-01-31 | 2019-06-28 | 秒针信息技术有限公司 | Processing method, device, storage medium and the electronic device of voice messaging |
| CN112102825B (en) * | 2020-08-11 | 2021-11-26 | 湖北亿咖通科技有限公司 | Audio processing method and device based on vehicle-mounted machine voice recognition and computer equipment |
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| CN101641871A (en) * | 2007-04-10 | 2010-02-03 | Sk电信有限公司 | Apparatus and method for voice processing in mobile communication terminal |
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| US8401178B2 (en) * | 2008-09-30 | 2013-03-19 | Apple Inc. | Multiple microphone switching and configuration |
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| CN101641871A (en) * | 2007-04-10 | 2010-02-03 | Sk电信有限公司 | Apparatus and method for voice processing in mobile communication terminal |
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