CN103559878A - Method for eliminating noise in audio information and device thereof - Google Patents
Method for eliminating noise in audio information and device thereof Download PDFInfo
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- CN103559878A CN103559878A CN201310397997.4A CN201310397997A CN103559878A CN 103559878 A CN103559878 A CN 103559878A CN 201310397997 A CN201310397997 A CN 201310397997A CN 103559878 A CN103559878 A CN 103559878A
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Abstract
The invention provides a method for eliminating noise in audio information and a device thereof. The method comprises steps of obtaining first sound information which at least comprises first sub sound information emitted by a user and second sub sound information outputted by a sound playing unit, receiving a second audio signal which is corresponding to the second sub sound information and is outputted to the sound playing unit by first electric equipment, obtaining first clock information in the second audio signal, obtaining second clock information corresponding to the first clock information, processing the first sound information according to the obtained first clock information and second clock information and reducing or removing the second sub sound information in the first sound information to obtain second sound information. According to the method, the noise in the audio information is eliminated, and the user experience is improved.
Description
Technical field
The present invention relates to audio signal processing technique field, particularly a kind of method of eliminating the noise in audio-frequency information.
Background technology
Development along with electronic technology, electronic functionalities and processing power are all greatly improved, such as, in existing televisor, the handling property of television processor of the prior art is more and more higher, therefore, televisor also can complete function or the processing power of some or all of PC, in internet television, user can carry out video voice-enabled chat on TV by bitcom, thereby makes user can carry out easily long-range control or long-range data transmission.
But there is following technical matters or defect find prior art in implementing process of the present invention in the inventor:
In prior art, during voice control function in user's unlocking electronic equipment (as: televisor or network terminal equipment), this electronic equipment or its voice collection device being equipped with in telechiric device can collect the acoustic information in corresponding region, but the acoustic information in this region has just comprised the sound that the voice output (as the loudspeaker in TV) of electronic equipment sends, the acoustic information mixing like this makes the phonetic order receiver module of electronic equipment voice control function to be difficult to accurately identification user's sound, thereby be difficult to the accurate user's of determining instruction, cause capability of recognizing voice command and the instruction responding ability of electronic equipment poor.
In prior art, because collecting in user's acoustic information, the voice collection device in electronic equipment mixed the sound in televisor, therefore the sound of the voice output of electronic equipment also causes interference by the voice-enabled chat to user, thereby the voice collection device that affect electronic equipment is carried out effectively user's voice content and and collection accurately.
Summary of the invention
For this reason, the present invention proposes a kind of method of eliminating the noise in audio-frequency information, can eliminate fully one or more problems that restriction and defect due to prior art cause.
Additional advantages of the present invention, object and characteristic, a part will be elucidated in the following description, and another part will be significantly or be acquired from enforcement of the present invention by the investigation of the explanation to below for those of ordinary skill in the art.By the structure of pointing out especially in the instructions at word and claims and accompanying drawing, can realize and obtain the object of the invention and advantage.
The invention provides a kind of method of eliminating the noise in audio-frequency information, described method is applied to electronic equipment, and described electronic equipment comprises sound playing unit, it is characterized in that, described method comprises:
Obtain the first acoustic information, described the first acoustic information at least comprises the first sub-acoustic information being sent by user and the second sub-acoustic information of being exported by described sound playing unit;
Receive second sound signal corresponding with described the second sub-acoustic information that the first electronic equipment outputs to described sound playing unit;
Obtain the first clock information in described the second sound signal;
Obtain the second clock information that described the first acoustic information is corresponding;
According to the first and second clock informations that get, described the first acoustic information to be processed, described the second sub-acoustic information by described the first acoustic information, obtains the second acoustic information.
Preferably, according to described the first clock information and described second clock information, extract described the second sub-acoustic information that the first clock information described in described second clock information is corresponding, and described the second sub-acoustic information is eliminated from described the first acoustic information, obtain described the second acoustic information.
Preferably, described the first clock information is the clock information of synchronizeing with described second clock information.
Preferably, also described the first acoustic information is carried out to pre-amplification processing.
Preferably, described the first acoustic information after described amplification is carried out to analog to digital conversion, obtain described first acoustic information of digital format;
The present invention also provides a kind of device of eliminating the noise in audio-frequency information, and it can be connected with first electronic equipment that comprises sound playing unit, it is characterized in that, described device comprises:
At least one audio-frequency information collecting unit, for gathering the first acoustic information, described the first acoustic information at least comprises the first sub-acoustic information being sent by user and the second sub-acoustic information of being exported by described sound playing unit;
First interface unit, for being connected with described the first electronic equipment, outputs to second sound signal corresponding with described the second sub-acoustic information of described sound playing unit for receiving described the first electronic equipment;
Audio-frequency information processing unit, be connected with described at least one acoustic information collecting unit and described first interface unit, be used for based on described the second sound signal, described the first acoustic information is processed, obtain the second acoustic information, wherein, described the second sub-acoustic information comprising in described the second acoustic information is less than described the second sub-acoustic information comprising in described the first acoustic information.
Preferably, described device also comprises: clock unit, be connected with described audio-frequency information processing unit, and be used to described audio-frequency information processing unit that clock information is provided.
Preferably, described device also comprises:
Power supply unit, is connected with described audio-frequency information processing unit, is used to described apparatus for processing audio that power supply is provided;
Storage unit, is connected with described audio-frequency information processing unit and described power supply unit, for storing the driver of described audio-frequency information harvester.
Preferably, described device also comprises:
The second connecting interface unit, be connected with described power supply unit, described audio-frequency information processing unit and the first electronic equipment, for providing power supply by the first electronic equipment for described power supply unit, and the second acoustic information in described audio-frequency information processing unit is sent to described the first electronic equipment.
Preferably, described audio-frequency information processing unit comprises:
Pre-amplification module, for described the first acoustic information is carried out to pre-amplification processing, obtains described the first acoustic information after amplifying;
Analog-to-digital conversion module, is connected with described pre-amplification module, for described the first acoustic information after described amplification is carried out to analog to digital conversion, obtains described first acoustic information of digital format;
Wave beam forms module, is connected with described analog-to-digital conversion module, for described the first acoustic information to described digital format, carries out wave beam formation processing, obtains described the first acoustic information after wave beam formation processing;
Reference information receiver module, for receiving the second sound signal of described first interface unit input;
Information attenuation module, is connected with described reference information receiver module, for described the second sound signal is carried out to information attenuation processing, obtains described the second sound signal through attenuation processing;
DSP processing module, be connected with described wave beam formation module and described information attenuation module, be used for according to described described the second sound signal through attenuation processing, described the second sub-acoustic information in described described the first acoustic information of processing through wave beam is reduced or removed, obtain described the second acoustic information.
The present invention eliminates the loudspeaker sound in sound signal, having improved electronic equipment can to the recognition capability of acoustic information and processing, also the interference of the loudspeaker of having avoided electronic equipment to user speech chat, can gather effectively accurately to user's sound-content electronic equipment.
Accompanying drawing explanation
Fig. 1 is according to the process flow diagram embodiment of the present invention, that eliminate the method for the noise in audio-frequency information.
Fig. 2 is according to the structural representation of eliminating the noise device in the audio-frequency information embodiment of the present invention, a kind of;
Fig. 3 is according to the concrete structure schematic diagram embodiment of the present invention, that eliminate the component units of the noise device in audio-frequency information;
Fig. 4 is according to the concrete structure schematic diagram embodiment of the present invention, audio-frequency information processing unit;
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present invention is described further.
As shown in Figure 1, according to the method embodiment of the present invention, that eliminate the noise in audio-frequency information, comprise:
Specifically, this electronic equipment has comprised a microphone, this microphone is the acoustic information gathering in corresponding region, and sets and also comprise a clock unit at this electronics, and this clock unit is by will be at this acoustic information conditional clock information when gathering acoustic information.
When gathering external sound information, this electronic equipment also outputs to the second sound signal in broadcast unit by receiving the firstth electronic equipment, when namely receiving the first electronic equipment the second sound signal is sent to loudspeaker, also this second sound signal is sent to audio-frequency information harvester.
Receive the first acoustic information and the second sound signal in step 501 and step 502 after, this electronic equipment is by the first clock information obtaining in described the second sound signal, and obtain the second clock information that described the first acoustic information is corresponding, thereby according to described the first clock information and described second clock information, then from the first clock information, extract the second sub-acoustic information corresponding to second clock information, then the second sub-acoustic information is mated with the second audio-frequency information, after the second sub-acoustic information mates with the second audio-frequency information, less or the removal by described the second sub-acoustic information in described the first acoustic information, obtain described the second acoustic information.
Be illustrated in figure 2 the structural representation of a kind of audio-frequency information harvester of the embodiment of the present invention, this audio-frequency information harvester comprises:
Audio-frequency information collecting unit 101 and audio-frequency information collecting unit 102, because this audio-frequency information harvester is connected with the first electronic equipment 105, therefore, the first acoustic information that audio-frequency information collecting unit 101 and audio-frequency information collecting unit 102 collect at least comprises the first sub-acoustic information being sent by user and the second sub-acoustic information of being exported by sound playing unit, wherein, this sound playing unit is the sound playing unit of the setting in the first electronic equipment 105.
When collecting the first acoustic information, audio-frequency information collecting unit 101 and audio-frequency information collecting unit 102 send to audio-frequency information processing unit 103, in audio-frequency information collecting unit 101 and audio-frequency information collecting unit 102 collection the first acoustic informations, the first connecting interface unit 104 in this audio-frequency information harvester will receive the second sound signal sending in the first electronic equipment, and this second sound signal is sent to audio-frequency information processing unit 103, thereby audio-frequency information processing unit 103 will be according to the second sound signal, described the first acoustic information is processed, obtain the second acoustic information, wherein, the the second sub-acoustic information comprising in the second acoustic information is less than the second sub-acoustic information comprising in the first acoustic information.
Specifically, such as this audio-frequency information harvester is installed in a TV, microphone in this audio-frequency information harvester is by the acoustic information collecting in external environment, this acoustic information has just comprised user's acoustic information and the acoustic information in tv speaker, this acoustic information will be transferred in audio-frequency information processing unit, the acoustic control instruction that need to obtain user due to this audio-frequency information harvester, therefore, back drop in loudspeaker need to be removed, therefore, this audio-frequency information harvester is also provided with a first interface unit, this first interface unit can be I
2s connecting interface, this I
2s connecting interface can TV transmission in loudspeaker sound signal, when that is to say in this TV transmission of sound signals to loudspeaker, also will be transferred to audio-frequency information harvester, thereby audio-frequency information harvester collects this loudspeaker sound signal voice signal from microphone, reduce or remove.
Certainly, it should be noted that owing to there is first interface unit, therefore, the voice signal of loudspeaker is to be directly transferred in audio-frequency information harvester, rather than gathers by loudspeaker, therefore, makes the removal effect of loudspeaker sound more accurate.
Further, in order to make this audio-frequency information harvester collection can be more accurate, therefore, be illustrated in figure 2 the concrete structure schematic diagram of the component units of embodiment of the present invention sound intermediate frequency information collecting device, this audio-frequency information harvester also comprises:
Specifically, in embodiments of the present invention, in this audio-frequency information harvester, also comprise clock unit, such as, after this TV has comprised this audio-frequency information harvester, microphone in this audio-frequency information harvester is by the acoustic information gathering in external environment, now, this clock unit will carry out time mark to this acoustic information, such as, it is to start collected sound signal that this microphone was located at 13: 30: 30, then at 13 o'clock, within 30 minutes, within 35 seconds, locate to finish the collection of voice signal, now this clock unit by this time mark in this voice signal, and the collection duration of this voice signal is also marked in this voice signal simultaneously.
In addition, in this TV, there is too clock unit, the voice signal that this clock unit transmits by first interface unit for mark, that is to say, in the loudspeaker sound signal that audio-frequency information collecting unit receives with regard to mark temporal information, the time Complete Synchronization of the clock unit mark in this temporal information and audio-frequency information collecting unit has just comprised the temporal information of 13: 30: 30 to 13: 30: 35 in this loudspeaker sound information.
Finally according to two temporal informations, audio-frequency information processing unit is by the loudspeaker sound of determining from 13: 30: 30 to 13: 30: 35, thereby the sound that the acoustic information in loudspeaker is collected from microphone, reduce or removal, the time mark of clock unit can be located accurately to the sound of removing simultaneously, and remove accurately loudspeaker sound, such mode can farthest avoid the mistake of loudspeaker sound to process.
In addition, this audio-frequency information harvester also comprises: power supply unit 202, be connected with audio-frequency information processing unit 103, be used to this audio-frequency information processing unit 103 to connect, and for this audio-frequency information processing unit 103 provides power supply, thereby audio-frequency information processing unit 103 just can provide power supply for clock unit 201.
The second connecting interface unit 204, be connected with power supply unit 202, audio-frequency information processing unit 103 and the first electronic equipment 105, thereby by the second connecting interface unit 204, audio-frequency information after processing in audio-frequency information processing unit 103 can be transferred in the first electronic equipment 105, thereby makes the first electronic equipment 105 audio-frequency information receiving can be carried out to corresponding processing.In addition, by the second connecting interface unit 204, between power supply unit 202 and the first electronic equipment 105, realize and being connected, thereby the first electronic equipment 105 can provide power supply for whole audio-frequency information harvester.Wherein, this second connecting interface is USB interface, can certainly be the interface of other types, and interface type can be determined according to the interface type of the first electronic equipment 105.
After audio-frequency information harvester comprises above-mentioned processing unit, this audio-frequency information processing unit 103 is that the sound signal of audio-frequency information collecting unit 101 and audio-frequency information collecting unit 102 and the transmission of the first connecting interface is carried out to corresponding processing in embodiments of the present invention, and its concrete processing mode comprises following mode:
Be illustrated in figure 3 the concrete structure schematic diagram of embodiment of the present invention sound intermediate frequency information process unit 103, when first the audio-frequency information collecting unit 101 in this audio-frequency information harvester and audio-frequency information collecting unit 102 are simulating signal microphone, this audio-frequency information processing unit 103 specifically comprises:
D/A converter module 302, this D/A converter module 302 is connected with pre-amplification module 301, and receive in pre-amplification module 301 sound signal after pre-amplification is processed, and this sound signal is carried out to analog-to-digital conversion process, thereby the voice signal that collecting unit is collected is converted to digital audio signal by analoging sound signal.
Wave beam forms module 303, this wave beam forms module 303 and is connected with analog-to-digital conversion module 302, and receive the digital audio signal of analog-to-digital conversion module 302, owing to having comprised the voice signal in external environment in this digital audio signal, therefore this wave beam forms module 303 and can carry out wave beam formation processing to this voice signal in embodiments of the present invention, thereby reduces or eliminate the noise in the external environment in this voice signal.
In addition, in this audio-frequency information processing unit 103, also comprised reference information receiver module 305, this grass is examined information receiving module 305 and is connected with the first connecting interface unit 104, and receives the sound signal in the first electronic equipment 105 of these the first connecting interface unit 104 transmission.
After sound signal is carried out to attenuation processing, this information attenuation module 306 sends to DPS processing module 304 by the sound signal after decay, after thereby DPS processing module 304 receives the wave beam formation acoustic information of module 303 and the sound signal of information attenuation module 306 at the same time, DPS processing module 304 is eliminated the sound signal in acoustic information or is reduced.
Specifically, first, in audio-frequency information harvester, be provided with clock unit 201, this clock unit 201 is done upper time marking by the voice signal collecting, thereby audio-frequency information processing unit 103 can be identified the acquisition time of the acoustic information collecting, the clock information of the DPS processing module 304 in this audio-frequency information processing unit 103 in can sound recognition information namely, in addition, in the first electronic equipment 105, carry clock unit, therefore, the first electronic equipment 105 sends to the sound signal of audio-frequency information processing unit 103 just to comprise clock information, and then DPS processing module also can be identified this clock information, finally, the audio-frequency information that two clock informations that this DPS processing module 304 can recognize according to reception and the first electronic equipment 105 send, by collecting the audio-frequency information that in acoustic information, identical clock information is corresponding, eliminate or minimizing.Thereby realized while having comprised the sound that loudspeaker sends in acoustic information, can effectively eliminate or reduce the loudspeaker sound in this sound, thereby improved the accuracy of identification of audio-frequency information harvester to acoustic information, thereby audio-frequency information harvester can be determined user's sound accurately, and then electronic equipment user's the instruction more accurately that also makes to install this audio-frequency information harvester.
At least there is following technique effect or advantage in one or more embodiment provided by the invention:
By sound in loudspeaker being eliminated at embodiment of the present invention audio-frequency information harvester or being reduced, thereby while having solved in prior art the voice control function in user's unlocking electronic equipment (as televisor), voice collection device in the telepilot of this electronic equipment or outfit can only be the acoustic information collecting in region, but the sound that the acoustic information in this region sends with regard to the loudspeaker that has comprised electronic equipment, the acoustic information mixing like this makes electronic equipment to be difficult to identification user's sound, thereby be difficult to accurately determine user's instruction, the processing power and the poor technical matters of instruction responding ability that cause electronic equipment, and then realized while having comprised the sound that loudspeaker sends in acoustic information, can effectively eliminate or reduce the loudspeaker sound in this sound, thereby improved the accuracy of identification of audio-frequency information harvester to acoustic information, audio-frequency information harvester also can be determined user's sound accurately, and then electronic equipment user's the instruction more accurately that also makes to install this audio-frequency information harvester.
By sound in loudspeaker being eliminated at embodiment of the present invention audio-frequency information harvester or being reduced, thereby solved in prior art because the voice collection device in electronic equipment collects in user's acoustic information and mixed the sound of loudspeaker in electronic equipment, therefore the sound of electronic equipment loudspeaker also will cause the problem of interference to user's voice-enabled chat, and then realized elimination or the minimizing to loudspeaker sound in morbid sound information, having improved electronic equipment can to the recognition capability of acoustic information and processing, also the interference of the loudspeaker of having avoided electronic equipment to user speech chat, electronic equipment can be gathered effectively accurately to user's sound-content.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware implementation example, implement software example or in conjunction with the form of the embodiment of software and hardware aspect completely.And the present invention can adopt the form that wherein includes the upper computer program of implementing of computer-usable storage medium (including but not limited to magnetic disk memory, CD-ROM, optical memory etc.) of computer usable program code one or more.
Above content is only preferred embodiment of the present invention, for those of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, and this description should not be construed as limitation of the present invention.
Claims (10)
1. eliminate a method for the noise in audio-frequency information, described method is applied to electronic equipment, and described electronic equipment comprises sound playing unit, it is characterized in that, described method comprises:
Obtain the first acoustic information, described the first acoustic information at least comprises the first sub-acoustic information being sent by user and the second sub-acoustic information of being exported by described sound playing unit;
Receive second sound signal corresponding with described the second sub-acoustic information that the first electronic equipment outputs to described sound playing unit;
Obtain the first clock information in described the second sound signal;
Obtain the second clock information that described the first acoustic information is corresponding;
According to the first and second clock informations that get, described the first acoustic information to be processed, described the second sub-acoustic information by described the first acoustic information, obtains the second acoustic information.
2. the method for the noise in elimination audio-frequency information according to claim 1, it is characterized in that, according to described the first clock information and described second clock information, extract described the second sub-acoustic information that the first clock information described in described second clock information is corresponding, and described the second sub-acoustic information is eliminated from described the first acoustic information, obtain described the second acoustic information.
3. the method for the noise in elimination audio-frequency information according to claim 2, is characterized in that, described the first clock information is the clock information of synchronizeing with described second clock information.
4. the method for the noise in elimination audio-frequency information according to claim 1, is characterized in that, also described the first acoustic information is carried out to pre-amplification processing.
5. the method for the noise in elimination audio-frequency information according to claim 4, is characterized in that, described the first acoustic information after described amplification is carried out to analog to digital conversion, obtains described first acoustic information of digital format;
6. eliminate a device for the noise in audio-frequency information, it can be connected with first electronic equipment that comprises sound playing unit, it is characterized in that, described device comprises:
At least one audio-frequency information collecting unit, for gathering the first acoustic information, described the first acoustic information at least comprises the first sub-acoustic information being sent by user and the second sub-acoustic information of being exported by described sound playing unit;
First interface unit, for being connected with described the first electronic equipment, outputs to second sound signal corresponding with described the second sub-acoustic information of described sound playing unit for receiving described the first electronic equipment;
Audio-frequency information processing unit, be connected with described at least one acoustic information collecting unit and described first interface unit, be used for based on described the second sound signal, described the first acoustic information is processed, obtain the second acoustic information, wherein, described the second sub-acoustic information comprising in described the second acoustic information is less than described the second sub-acoustic information comprising in described the first acoustic information.
7. the device of the noise in elimination audio-frequency information according to claim 6, is characterized in that, described device also comprises: clock unit, be connected with described audio-frequency information processing unit, and be used to described audio-frequency information processing unit that clock information is provided.
8. the device of the noise in elimination audio-frequency information according to claim 6, is characterized in that, described device also comprises:
Power supply unit, is connected with described audio-frequency information processing unit, is used to described apparatus for processing audio that power supply is provided;
Storage unit, is connected with described audio-frequency information processing unit and described power supply unit, for storing the driver of described audio-frequency information harvester.
9. the device of the noise in elimination audio-frequency information according to claim 6, is characterized in that, described device also comprises:
The second connecting interface unit, be connected with described power supply unit, described audio-frequency information processing unit and the first electronic equipment, for providing power supply by the first electronic equipment for described power supply unit, and the second acoustic information in described audio-frequency information processing unit is sent to described the first electronic equipment.
10. the device of the noise in elimination audio-frequency information according to claim 6, is characterized in that, described audio-frequency information processing unit comprises:
Pre-amplification module, for described the first acoustic information is carried out to pre-amplification processing, obtains described the first acoustic information after amplifying;
Analog-to-digital conversion module, is connected with described pre-amplification module, for described the first acoustic information after described amplification is carried out to analog to digital conversion, obtains described first acoustic information of digital format;
Wave beam forms module, is connected with described analog-to-digital conversion module, for described the first acoustic information to described digital format, carries out wave beam formation processing, obtains described the first acoustic information after wave beam formation processing;
Reference information receiver module, for receiving the second sound signal of described first interface unit input;
Information attenuation module, is connected with described reference information receiver module, for described the second sound signal is carried out to information attenuation processing, obtains described the second sound signal through attenuation processing;
DSP processing module, be connected with described wave beam formation module and described information attenuation module, be used for according to described described the second sound signal through attenuation processing, described the second sub-acoustic information in described described the first acoustic information of processing through wave beam is reduced or removed, obtain described the second acoustic information.
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| CN201310397997.4A CN103559878A (en) | 2013-09-04 | 2013-09-04 | Method for eliminating noise in audio information and device thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015180430A1 (en) * | 2014-05-29 | 2015-12-03 | 广东美的制冷设备有限公司 | Voice control method and system |
| CN105225661A (en) * | 2014-05-29 | 2016-01-06 | 美的集团股份有限公司 | Sound control method and system |
| CN107240399A (en) * | 2017-06-29 | 2017-10-10 | 上海思依暄机器人科技股份有限公司 | A kind of method and apparatus for improving phonetic order recognition effect |
| CN109389976A (en) * | 2018-09-27 | 2019-02-26 | 珠海格力电器股份有限公司 | Intelligent household electrical appliance control method and device, intelligent household electrical appliance and storage medium |
| CN110493616A (en) * | 2018-05-15 | 2019-11-22 | 中国移动通信有限公司研究院 | A kind of acoustic signal processing method, device, medium and equipment |
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2013
- 2013-09-04 CN CN201310397997.4A patent/CN103559878A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015180430A1 (en) * | 2014-05-29 | 2015-12-03 | 广东美的制冷设备有限公司 | Voice control method and system |
| CN105225661A (en) * | 2014-05-29 | 2016-01-06 | 美的集团股份有限公司 | Sound control method and system |
| CN105280184A (en) * | 2014-05-29 | 2016-01-27 | 广东美的制冷设备有限公司 | Voice control method and voice control system |
| CN105225661B (en) * | 2014-05-29 | 2019-06-28 | 美的集团股份有限公司 | Sound control method and system |
| CN107240399A (en) * | 2017-06-29 | 2017-10-10 | 上海思依暄机器人科技股份有限公司 | A kind of method and apparatus for improving phonetic order recognition effect |
| CN110493616A (en) * | 2018-05-15 | 2019-11-22 | 中国移动通信有限公司研究院 | A kind of acoustic signal processing method, device, medium and equipment |
| CN109389976A (en) * | 2018-09-27 | 2019-02-26 | 珠海格力电器股份有限公司 | Intelligent household electrical appliance control method and device, intelligent household electrical appliance and storage medium |
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