CN105100338B - The method and apparatus for reducing noise - Google Patents
The method and apparatus for reducing noise Download PDFInfo
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- CN105100338B CN105100338B CN201410221923.XA CN201410221923A CN105100338B CN 105100338 B CN105100338 B CN 105100338B CN 201410221923 A CN201410221923 A CN 201410221923A CN 105100338 B CN105100338 B CN 105100338B
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Abstract
The invention discloses a kind of method and apparatus reducing noise, belong to wireless communication technology field.The method includes：The current ambient sound with first terminal synchronous acquisition, obtains first environment sound, and obtains the collected ambient sound of first terminal, obtains second environment sound, and ambient sound includes user voice and noise；Extract the user voice in first environment sound and the user voice in second environment sound；Pure user voice is obtained according to the user voice in the first environment sound of extraction and the user voice in second environment sound.The present invention is by acquiring the first environment sound synchronous with first terminal, and obtain the collected second environment sound of first terminal, and then the user voice in first environment sound and second environment sound is extracted, and pure user voice is obtained according to the user voice extracted from first environment sound and second environment sound.Since obtained user voice is pure user voice, significantly reduce noise.
Description
Technical field
The present invention relates to wireless communication technology field, more particularly to a kind of method and apparatus reducing noise.
Background technology
With the development of wireless communication technique, more and more communication equipments based on wireless communication technique gradually enter into people
Life, for example, mobile phone, bluetooth headset etc..When being communicated using these communication equipments, these communication equipments can not only
User voice is collected, and the ambient noise of surrounding can be collected, since collected ambient noise is to communication equipment
Communication quality has an impact, and therefore, in order to improve the communication quality of communication equipment, how to reduce noise, becomes people in the art
The problem of member more pays close attention to.
The relevant technologies acquire the acquisition range of sound by the microphone of setting communication equipment, in turn when reducing noise
The sound in the acquisition range of setting is acquired, to achieve the purpose that reduce noise.
In the implementation of the present invention, at least there are the following problems for inventor's discovery the relevant technologies：
Since the relevant technologies are when reducing noise, the acquisition range for setting microphone acquisition sound is needed, however when this sets
When the volume of noise in the range of fixed acquisition sound is larger, the relevant technologies can still acquire the noise, lead to the relevant technologies
Effect when reducing noise is poor.
Invention content
In order to solve problems in the prior art, an embodiment of the present invention provides a kind of method and apparatus reducing noise.Institute
It is as follows to state technical solution：
In a first aspect, a kind of method reducing noise is provided, the method includes：
The current ambient sound with first terminal synchronous acquisition, obtains first environment sound, and obtains first terminal acquisition
The ambient sound arrived, obtains second environment sound, and the ambient sound includes user voice and noise；
Extract the user voice in the first environment sound and the user voice in the second environment sound；
According to the user voice in the first environment sound of extraction and the user voice in the second environment sound
Obtain pure user voice.
With reference to first aspect, in the first possible realization method of first aspect, it is described with first terminal synchronize adopt
Collect current ambient sound, including：
It determines the delay time with the current ambient sound of the first terminal synchronous acquisition, obtains timestamp information, and
Current ambient sound is acquired according to the timestamp information.
With reference to first aspect, in second of possible realization method of first aspect, the determination is whole with described first
It holds the delay time of the current ambient sound of synchronous acquisition, including：
It determines the distance between described first terminal, and is calculated and the first terminal synchronous acquisition according to the distance
The delay time of current ambient sound.
With reference to first aspect, described to be believed according to the timestamp in the third possible realization method of first aspect
Breath acquires current ambient sound, including：
The acquisition time for acquiring current ambient sound is determined according to the timestamp information；
Current ambient sound is acquired using microphone according to determining acquisition time.
With reference to first aspect, in the 4th kind of possible realization method of first aspect, the extraction first environment
The user voice in user voice and the second environment sound in sound, including：
According to the peak noise ratio of the first environment sound user voice, and root are extracted from the first environment sound
According to the peak noise ratio of the second environment sound user voice is extracted from the second environment sound.
Second aspect, provides a kind of device reducing noise, and described device includes：
Acquisition module is used for the ambient sound current with first terminal synchronous acquisition, obtains first environment sound；
First acquisition module obtains second environment sound, the ring for obtaining the collected ambient sound of first terminal
Border sound includes user voice and noise；
Extraction module, for extracting the user voice in the first environment sound and the use in the second environment sound
Family sound；
Second acquisition module, for according in the first environment sound of extraction user voice and the second environment
User voice in sound obtains pure user voice.
In conjunction with second aspect, in the first possible realization method of second aspect, the acquisition module, including：
Determination unit is obtained for determining the delay time with the current ambient sound of the first terminal synchronous acquisition
Timestamp information；
Collecting unit, for acquiring current ambient sound according to the timestamp information.
In conjunction with second aspect, in second of possible realization method of second aspect, the determination unit, for determining
The distance between described first terminal, and calculated and the current ambient sound of the first terminal synchronous acquisition according to the distance
The delay time of sound.
In conjunction with second aspect, in the third possible realization method of second aspect, the collecting unit, including：
Determination subelement, for determining the acquisition time for acquiring current ambient sound according to the timestamp information；
Subelement is acquired, for acquiring current ambient sound using microphone according to determining acquisition time.
In conjunction with second aspect, in the 4th kind of possible realization method of second aspect, second acquisition module, packet
It includes：
First extraction unit is used for the peak noise ratio according to the first environment sound from the first environment sound
Extract user voice；
Second extraction unit is used for the peak noise ratio according to the second environment sound from the second environment sound
Extract user voice.
The advantageous effect that technical solution provided in an embodiment of the present invention is brought is：
By acquiring the first environment sound synchronous with first terminal, and obtain the collected second environment sound of first terminal
Sound, and then extract the user voice in first environment sound and second environment sound, and according to from first environment sound and second
The user voice extracted in ambient sound obtains pure user voice.Since obtained user voice is pure user's sound
Therefore sound significantly reduces noise.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is a kind of method flow diagram for reduction noise that the embodiment of the present invention one provides；
Fig. 2 is a kind of method flow diagram reducing noise provided by Embodiment 2 of the present invention；
Fig. 3 is a kind of apparatus structure schematic diagram for reduction noise that the embodiment of the present invention three provides；
Fig. 4 is the structural schematic diagram for the acquisition module that the embodiment of the present invention three provides；
Fig. 5 is the structural schematic diagram for the collecting unit that the embodiment of the present invention three provides；
Fig. 6 is the structural schematic diagram for the second acquisition module that the embodiment of the present invention three provides.
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
Embodiment one
Communication quality when being communicated using communication equipment to improve reduces the noise jamming in communication process, this
Inventive embodiments provide a kind of method reducing noise, and referring to Fig. 1, method flow provided in this embodiment includes：
101：The current ambient sound with first terminal synchronous acquisition, obtains first environment sound, and obtain first terminal
Ambient sound is collected, second environment sound is obtained, ambient sound includes user voice and noise.
As a kind of optional embodiment, the current ambient sound with first terminal synchronous acquisition, including：
Determine with delay time of the current ambient sound of first terminal synchronous acquisition, obtain timestamp information, and according to
Timestamp information acquires current ambient sound.
As a kind of optional embodiment, the delay time with the current ambient sound of first terminal synchronous acquisition is determined,
Including：
It determines the distance between first terminal, and is calculated and the current ambient sound of first terminal synchronous acquisition according to distance
The delay time of sound.
As a kind of optional embodiment, current ambient sound is acquired according to timestamp information, including：
The acquisition time for acquiring current ambient sound is determined according to timestamp information；
Current ambient sound is acquired using microphone according to determining acquisition time.
102：Extract the user voice in first environment sound and the user voice in second environment sound.
As a kind of optional embodiment, the user voice in first environment sound and the use in second environment sound are extracted
Family sound, including：
User voice is extracted from first environment sound according to the peak noise of first environment sound ratio, and according to the second ring
The peak noise ratio of border sound extracts user voice from second environment sound.
103：It is obtained according to the user voice in the first environment sound of extraction and the user voice in second environment sound
Pure user voice.
Method provided in an embodiment of the present invention, by acquiring the first environment sound synchronous with first terminal, and acquisition the
The collected second environment sound of one terminal, and then the user voice in first environment sound and second environment sound is extracted, and
Pure user voice is obtained according to the user voice extracted from first environment sound and second environment sound.Due to what is obtained
User voice is therefore pure user voice significantly reduces noise.
Embodiment two
An embodiment of the present invention provides a kind of methods reducing noise, in order to make it easy to understand, in conjunction with above-described embodiment one
Content, by reduce noise device be mobile terminal for, to it is provided in an embodiment of the present invention reduce noise method carry out
Explanation is explained in detail, referring to Fig. 2, method flow provided in this embodiment includes：
201：The current ambient sound with first terminal synchronous acquisition, obtains first environment sound.
Wherein, ambient sound includes but not limited to user voice and noise etc., and the present embodiment does not make ambient sound specific
Restriction.First terminal is bluetooth headset etc., and the present embodiment does not make specific limit to first terminal.Due to whole by first
It holds under the scene communicated, not only the voice collection device in mobile terminal can acquire current ambient sound, but also first
Voice collection device in terminal can also acquire current ambient sound, and due to the collected ambient sound of mobile terminal and
The collected ambient sound of one terminal equally can all be sent to Correspondent Node.When mobile terminal and the collected environment of first terminal
When sound is asynchronous, same ambient sound opposite end will receive twice, cause communication quality relatively low.Therefore, it is communicated to improve
Quality avoids same ambient sound opposite end from receiving twice, and mobile terminal needs and first when acquiring current ambient sound
Terminal, which synchronizes, to be acquired.For the ease of being distinguished to the different collected current environmental sounds of equipment in subsequent step,
Collected current environmental sound is determined as first environment sound in this step.
About the mode of the ambient sound current with first terminal synchronous acquisition, including but not limited to：
The first step determines the delay time with the current ambient sound of first terminal synchronous acquisition, obtains timestamp information；
For the first step, due to when being communicated using first terminal, having one between communication terminal and first terminal
Fixed distance, and communication terminal and first terminal be when acquiring current ambient sound, under the present circumstances the propagation speed of sound
Degree is identical, and when sound source makes a sound, the distance due to communication terminal and first terminal apart from sound source is different, causes to communicate
Equipment and first terminal are mutually collected sound is different in the same time.Therefore, in order to realize and first terminal synchronous acquisition
Current ambient sound, it is thus necessary to determine that the delay time of current ambient sound with first terminal synchronous acquisition, and then when obtaining
Between stab information.
Specifically, since in communication process, first terminal is closer with occurring source distance, it is believed that first terminal is acquiring
There is no delays when user voice, and communication terminal is generally acknowledged that apart from occurring source distance farther out, and current user's sound is being acquired
Communication terminal is opposite when sound has delay with first terminal.Therefore, it is determining and the current ambient sound of first terminal synchronous acquisition
The delay time of sound, including but not limited to：
It determines the distance between first terminal, and is calculated and the current ambient sound of first terminal synchronous acquisition according to distance
The delay time of sound.
For the above process, in order to make it easy to understand, with a specific example will carry out that explanation is explained in detail below.
For example, the distance between communication terminal and first terminal are 34 centimetres, the aerial spread speed of sound is 340
Meter per second.When user makes a sound in communication process, according to 34 centimetres of the distance between first terminal can calculate with
The delay time of the current ambient sound of first terminal synchronous acquisition is：The distance between first terminal/sound is in air
Spread speed=34 centimetre/340 meter per second=0.001 second, i.e., when delay with first terminal synchronous acquisition current environmental sound
Between be 0.001 second.
Second step acquires current ambient sound according to timestamp information.
For second step, about current ambient sound is acquired according to timestamp information, including but not limited to：
First, the acquisition time for acquiring current ambient sound is determined according to timestamp information；
Secondly, current ambient sound is acquired using microphone according to determining acquisition time.
For the above-mentioned process for acquiring current ambient sound according to timestamp information, in order to make it easy to understand, below will be with
One specific example carries out that explanation is explained in detail.
For example, timestamp information is 0.1 second, illustrate to postpone when mobile terminal acquires identical ambient sound with first terminal
Time is 0.1 second, current with first terminal synchronous acquisition in order to realize if the time that sound source sends out current environmental sound is 8 points
Ambient sound, the current environmental sound that is determined as first 0.1 second acquiring that sound source can be sent out to the time of current environmental sound adopts
Collect the time, i.e., the acquisition time for being determined as 59.59 seconds 59 minutes acquiring current environmental sound by 7 points.After determining acquisition time,
Sound collection equipment such as microphone can be used to start to acquire current ambient sound.
202：The collected ambient sound of first terminal is obtained, second environment sound is obtained.
Wherein, ambient sound includes user voice and noise.Since the collected ambient sound of first terminal is subsequently to walk
The basis that pure ambient sound is obtained in rapid, therefore, in order to get pure ambient sound, method provided in this embodiment
It needs to obtain the collected ambient sound of first terminal.Work as front ring for the ease of collected to different equipment in subsequent step
Border sound distinguishes, and collected current environmental sound is determined as second environment sound in this step.
Specifically, the mode of the collected second environment sound of first terminal is obtained, such as lower section is including but not limited to used
Formula obtains：When being communicated using first terminal, first terminal acquires current ambient sound data, and then will be collected
Current ambient sound data carry out packing compression, and the ambient sound data for being packaged compression are sent to communication terminal, communicate
Terminal is after the ambient sound data for receiving first terminal transmission, by the collected second environment of the first terminal received
Sound is as the collected second environment sound of first terminal got.
The mode of current ambient sound is acquired about first terminal, including but not limited to uses the acquisitions such as microphone current
Ambient sound.
203：Extract the user voice in first environment sound and the user voice in second environment sound.
Due to the first environment sound either arrived with first terminal synchronous acquisition, the first terminal still got acquires
All include user voice and noise, and first environment in the second environment sound arrived, first environment sound and second environment sound
The noise in noise and second environment sound in sound is the interference sound for influencing communication quality, user's sound in first terminal
User voice in sound and second terminal is that required useful sound therefore, can in order to improve communication quality in communication process
User voice in user voice and second environment sound in the first environment sound needed in communication process is extracted.
Specifically, microphone is determined when acquiring ambient sound according to the frequency information in collected ambient sound
The peak noise ratio of collected ambient sound, and peak noise than for noise in collected ambient sound volume and user
Therefore the volume ratio of sound extracts the user voice in first environment sound and the user voice in second environment sound, packet
It includes but is not limited to extract user voice from first environment sound according to the peak noise ratio of first environment sound, and according to second
The peak noise ratio of ambient sound extracts user voice from second environment sound.
It should be noted that since first terminal under normal conditions is closer apart from occurring source, first terminal collects
Second environment sound in the volume of user voice can be higher than the volume of noise, the peak noise of second environment sound than
Value will usually be less than 1, such as 0.5,0.6,0.8.And mobile terminal it is generally opposite with first terminal apart from occurring source farther out, because
This, the volume of the user voice in the collected first environment sound of mobile terminal can be lower than the volume value of noise, the first ring
The peak noise of border sound than value be typically larger than 1, such as 1.5,2,2.5.
It specifically, can when extracting user voice from first environment sound according to the peak noise of first environment sound ratio
With the following method：If the volume value of collected first environment sound is A, the peak noise ratio of first environment sound is a, if
The volume value for determining the user voice in first environment sound is B, and the volume value of the noise in first environment sound is C, then can arrange
Go out following relational expression：
B+C=A；C/B=a；
According to above-mentioned two relational expression, it can show that the volume value of the user voice in first environment sound is A/ (a+1), when
So, it can also show that the volume value of the noise in first environment sound is Aa/ (a+1).
For the above process, in order to make it easy to understand, with a specific example will carry out that explanation is explained in detail below.
For example, the volume value for collecting first environment sound is 60 decibels, the peak noise ratio of first environment sound is 2,
If setting the volume value of the user voice in first environment sound as B, the volume value of the noise in first environment sound is C, then
The relational expression that can be listed is；
B+C=60；C/B=2；
According to above-mentioned two relational expression, it can show that the volume value of the user voice in first environment sound is 20 decibels, the
The volume value of noise in one ambient sound is 40 decibels.
Specifically, when extracting user voice from second environment sound according to the peak noise ratio in second environment sound,
Following method can be used：If the volume value of collected second environment sound is X, the peak noise ratio of second environment sound is b,
The volume value of the user voice in second environment sound is set as Y, the volume value of the noise in second environment sound is Z, then may be used
It is listed below relational expression：
Y+Z=X；Z/Y=b；
According to above-mentioned two relational expression, it can show that the volume value of the user voice in second environment sound is X/ (b+1), when
So, it can also show that the volume value of the noise in second environment sound is Xb/ (b+1).
For the above process, in order to make it easy to understand, with a specific example will carry out that explanation is explained in detail below.
For example, the volume value for collecting second environment sound is 90 decibels, the peak noise ratio of second environment sound is
0.5, if setting the volume value of the user voice in second environment sound as Y, the volume value of the noise in first environment sound is
Z, the then relational expression that can be listed are；
Y+Z=90；Z/Y=0.5；
According to above-mentioned two relational expression, it can show that the volume value of the user voice in first environment sound is 60 decibels, the
The volume value of noise in one ambient sound is 30 decibels.
204：It is obtained according to the user voice in the first environment sound of extraction and the user voice in second environment sound
Pure user voice.
Due to being extracted user voice in above-mentioned steps 203 from first environment sound, and from second environment sound
In be extracted user voice, in order to improve communication quality, make the user voice that the user in communication process to end side hears be
The smaller pure user voice of noise, this step will be needed according to the user voice and second in the first environment sound of extraction
User voice in ambient sound obtains pure user voice.
Specifically, it is obtained according to the user voice in the first environment sound of extraction and the user voice in second environment sound
When taking pure user voice, can be used the algorithm of setting by first environment sound user voice and second environment sound in
User voice synthesized, by synthesis obtain a pure user voice.About by the user in first environment sound
User voice in sound and second environment sound synthesizes to obtain the algorithm of a pure user voice, and the present embodiment is not made to have
The restriction of body.When it is implemented, can be by the user voice in first environment sound and the user voice in second environment sound
Synthesize a pure user voice.
Method provided in an embodiment of the present invention, by acquiring the first environment sound synchronous with first terminal, and acquisition the
The collected second environment sound of one terminal, and then the user voice in first environment sound and second environment sound is extracted, and
Pure user voice is obtained according to the user voice extracted from first environment sound and second environment sound.Due to what is obtained
User voice is therefore pure user voice significantly reduces noise.
Embodiment three
Referring to Fig. 3, an embodiment of the present invention provides a kind of device reducing noise, which includes：
Acquisition module 301 is used for the ambient sound current with first terminal synchronous acquisition, obtains first environment sound；
First acquisition module 302 collects ambient sound for obtaining first terminal, obtains second environment sound, environment
Sound includes user voice and noise；
Extraction module 303, for extracting the user voice in first environment sound and user's sound in second environment sound
Sound；
Second acquisition module 304, for according to the user voice and second environment sound in the first environment sound of extraction
In user voice obtain pure user voice.
Referring to Fig. 4, acquisition module 301, including：
Determination unit 3011 is obtained for determining the delay time with the current ambient sound of first terminal synchronous acquisition
Timestamp information；
Collecting unit 3012, for acquiring current ambient sound according to timestamp information.
As a kind of optional embodiment, determination unit 3011, for determining the distance between first terminal, and according to
Distance calculates the delay time with the current ambient sound of first terminal synchronous acquisition.
Referring to Fig. 5, collecting unit 3012, including：
Determination subelement 30121, for determining the acquisition time for acquiring current ambient sound according to timestamp information；
Subelement 30122 is acquired, for acquiring current ambient sound using microphone according to determining acquisition time.
Referring to Fig. 6, the second acquisition module 304, including：
First extraction unit 3041, for being extracted from first environment sound according to the peak noise ratio of first environment sound
User voice；
Second extraction unit 3042, for being extracted from second environment sound according to the peak noise ratio of second environment sound
User voice.
To sum up, device provided in an embodiment of the present invention by acquiring the first environment sound synchronous with first terminal, and obtains
The collected second environment sound of first terminal is taken, and then extracts user's sound in first environment sound and second environment sound
Sound, and pure user voice is obtained according to the user voice extracted from first environment sound and second environment sound.Due to
Obtained user voice is therefore pure user voice significantly reduces noise.
It should be noted that：The device for the reduction noise that above-described embodiment provides is when reducing noise, only with above-mentioned each work(
Can module division progress for example, in practical application, can be as needed and by above-mentioned function distribution by different functions
Module is completed, i.e., the internal structure for the device for reducing noise is divided into different function modules, described above complete to complete
Portion or partial function.In addition, the device for the reduction noise that above-described embodiment provides belongs to the embodiment of the method for reducing noise
Same design, specific implementation process refer to embodiment of the method, and which is not described herein again.
The embodiments of the present invention are for illustration only, can not represent the quality of embodiment.
One of ordinary skill in the art will appreciate that realizing that all or part of step of above-described embodiment can pass through hardware
It completes, relevant hardware can also be instructed to complete by program, the program can be stored in a kind of computer-readable
In storage medium, storage medium mentioned above can be read-only memory, disk or CD etc..
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of method reducing noise, which is characterized in that the method includes：
The current ambient sound with first terminal synchronous acquisition, obtains first environment sound, and it is collected to obtain first terminal
Ambient sound, obtains second environment sound, and the ambient sound includes user voice and noise；
User voice is extracted from the first environment sound according to the peak noise ratio of the first environment sound, is obtained described
User voice in first environment sound；And according to the peak noise ratio of the second environment sound from the second environment sound
Middle extraction user voice obtains the user voice in the second environment sound；
It is obtained according to the user voice in the first environment sound of extraction and the user voice in the second environment sound
Pure user voice.
2. according to the method described in claim 1, it is characterized in that, the described and current ambient sound of first terminal synchronous acquisition
Sound, including：
Determine with delay time of the current ambient sound of the first terminal synchronous acquisition, obtain timestamp information, and according to
The timestamp information acquires current ambient sound.
3. according to the method described in claim 2, it is characterized in that, the determination and the first terminal synchronous acquisition are current
The delay time of ambient sound, including：
Determine the distance between described first terminal, and current with the first terminal synchronous acquisition according to the distance calculating
Ambient sound delay time.
4. according to the method described in claim 2, it is characterized in that, described acquire current environment according to the timestamp information
Sound, including：
The acquisition time for acquiring current ambient sound is determined according to the timestamp information；
Current ambient sound is acquired using microphone according to determining acquisition time.
5. a kind of device reducing noise, which is characterized in that described device includes：
Acquisition module is used for the ambient sound current with first terminal synchronous acquisition, obtains first environment sound；
First acquisition module obtains ambient sound described in second environment sound for obtaining the collected ambient sound of first terminal
Sound includes user voice and noise；
First extraction unit, for being extracted from the first environment sound according to the peak noise ratio of the first environment sound
User voice obtains the user voice in the first environment sound；
Second extraction unit, for being extracted from the second environment sound according to the peak noise ratio of the second environment sound
User voice obtains the user voice in the second environment sound；
Second acquisition module, for according in the first environment sound of extraction user voice and the second environment sound
In user voice obtain pure user voice.
6. device according to claim 5, which is characterized in that the acquisition module, including：
Determination unit obtains the time for determining the delay time with the current ambient sound of the first terminal synchronous acquisition
Stab information；
Collecting unit, for acquiring current ambient sound according to the timestamp information.
7. device according to claim 6, which is characterized in that the determination unit, for determining and the first terminal
The distance between, and according to the delay time of the distance calculating and the current ambient sound of the first terminal synchronous acquisition.
8. device according to claim 6, which is characterized in that the collecting unit, including：
Determination subelement, for determining the acquisition time for acquiring current ambient sound according to the timestamp information；
Subelement is acquired, for acquiring current ambient sound using microphone according to determining acquisition time.
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| CN113035172A (en) * | 2019-12-09 | 2021-06-25 | 阿里巴巴集团控股有限公司 | Voice acquisition method and system, voice recognition method, device and storage medium |
| CN115065860B (en) * | 2022-07-01 | 2023-03-14 | 广州美录电子有限公司 | Audio data processing method, device, equipment and medium suitable for stage |
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| GB0106269D0 (en) * | 2001-03-14 | 2001-05-02 | Auntiegravity Ltd | Improvements in noise cancellation |
| US20040059571A1 (en) * | 2002-09-24 | 2004-03-25 | Marantz Japan, Inc. | System for inputting speech, radio receiver and communication system |
| CN100392723C (en) * | 2002-12-11 | 2008-06-04 | 索夫塔马克斯公司 | System and method for speech processing using independent component analysis under stability restraints |
| CN1212608C (en) * | 2003-09-12 | 2005-07-27 | 中国科学院声学研究所 | A multichannel speech enhancement method using postfilter |
| US7848529B2 (en) * | 2007-01-11 | 2010-12-07 | Fortemedia, Inc. | Broadside small array microphone beamforming unit |
| CN101853666B (en) * | 2009-03-30 | 2012-04-04 | 华为技术有限公司 | Speech enhancement method and device |
| CN101667426A (en) * | 2009-09-23 | 2010-03-10 | 中兴通讯股份有限公司 | Device and method for eliminating environmental noise |
| BR112012031656A2 (en) * | 2010-08-25 | 2016-11-08 | Asahi Chemical Ind | device, and method of separating sound sources, and program |
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