CN104900237B

CN104900237B - A kind of methods, devices and systems for audio-frequency information progress noise reduction process

Info

Publication number: CN104900237B
Application number: CN201510201723.2A
Authority: CN
Inventors: 郭彤; 范志军; 常江; 瞿镇一; 史晓宇
Original assignee: Shanghai Synacast Media Technology Co Ltd
Current assignee: Shanghai Synacast Media Technology Co Ltd
Priority date: 2015-04-24
Filing date: 2015-04-24
Publication date: 2019-07-05
Anticipated expiration: 2035-04-24
Also published as: CN104900237A

Abstract

A method of for carrying out noise reduction process to audio-frequency information in the first equipment, wherein this method comprises: the ambient noise information at current time is supplied to the second equipment by a.；B. the noise prediction information from the second equipment is received；C. according to the noise prediction information and the ambient noise information, the ambient noise information of following instant is predicted；D. according to the ambient noise information of the following instant, noise reduction process is carried out in the audio-frequency information that following instant exports to first equipment, the audio-frequency information after obtaining noise reduction.According to the scheme of the present embodiment, the ambient noise information of following instant can be predicted, and can carry out waveform optimization to the audio-frequency information of following instant, to more up to arrive better noise reduction effect.

Description

A kind of methods, devices and systems for audio-frequency information progress noise reduction process

Technical field

The present invention relates to field of computer technology more particularly to a kind of sides for audio-frequency information progress noise reduction process Method, device and system.

Background technique

In the prior art, it is defeated to the first equipment (such as smart television) to reduce ambient noise to generally use following two approach The interference that audio out generates: a) the first equipment directly carries out waveform corresponding with the ambient noise at current time inverse with amplitude Phase Processing, and the waveform obtained after waveform corresponding to the audio by following instant and aforementioned same amplitude phase reversal processing, into Row phase adduction output, to realize noise reduction；B) by it is being decorated in the indoor environment locating for the first equipment, can be used in noise reduction Ornament (such as Double-layer sound-insulation wall, sound-absorbing carpet), come during being transferred to human ear after audio output to the audio into Row noise reduction.

Summary of the invention

The object of the present invention is to provide a kind of for carrying out the methods, devices and systems of noise reduction process to audio-frequency information.

According to an aspect of the present invention, it provides a kind of for carrying out noise reduction process to audio-frequency information in the first equipment Method, wherein this method comprises:

A. the ambient noise information at current time is supplied to the second equipment；

B. the noise prediction information from the second equipment is received；

C. according to the noise prediction information and the ambient noise information, the ambient noise letter of following instant is predicted Breath；

D. according to the ambient noise information of the following instant, first equipment is believed in the audio that following instant exports Breath carries out noise reduction process, the audio-frequency information after obtaining noise reduction.

According to another aspect of the present invention, it additionally provides a kind of for providing noise to the first equipment in the second equipment The method of predictive information, wherein this method comprises:

A. the ambient noise information at the current time from the first equipment is received；

B. according to the noise information at the current time, and history noise information corresponding with the first equipment, it determines and uses In the noise prediction information of the noise of prediction following instant.

C. the noise prediction information is supplied to the first equipment.

According to another aspect of the present invention, it additionally provides a kind of for being carried out at noise reduction in the first equipment to audio-frequency information The first device of reason, wherein the first device includes:

First provides device, for the ambient noise information at current time to be supplied to the second equipment；

First receiving device, for receiving the noise prediction information from the second equipment；

Prediction meanss, for predicting following instant according to the noise prediction information and the ambient noise information Ambient noise information；

Processing unit, for the ambient noise information according to the following instant, to first equipment in following instant The audio-frequency information of output carries out noise reduction process, the audio-frequency information after obtaining noise reduction.

According to another aspect of the present invention, it additionally provides a kind of pre- for providing noise to the first equipment in the second equipment The second device of measurement information, wherein the second device includes:

Second reception device, for receiving the ambient noise information at the current time from the first equipment；

Second determining device, for the noise information according to the current time, and history corresponding with the first equipment Noise information determines the noise prediction information for predicting the noise of following instant.

Second provides device, for the noise prediction information to be supplied to the first equipment.

According to another aspect of the present invention, a kind of system is additionally provided, which includes the first equipment and the second equipment, institute Stating the first equipment includes first device of the present invention, and second equipment includes second device of the present invention.

Compared with prior art, the invention has the following advantages that 1) can be according to the environment in current time actual environment The history noise information of noise information and the first equipment, to predict the ambient noise information of following instant, further according to measuring in advance The ambient noise information arrived carries out noise reduction process to the audio-frequency information of following instant, so that the audio that human ear is finally heard Information and the initial audio information difference to be exported of the first equipment before noise reduction are minimum, also can high degree also original initial sound Frequency information；It 2) can be in conjunction with the history noise information of other the first equipment associated with the first equipment, to obtain more accurately Noise information is predicted, to reach better noise reduction effect；3) decoration in indoor environment locating for the first equipment is had no need to change, So as to greatly save cost；It 4) can be by the environment of the audio-frequency information of the following instant of the first equipment and the current time Noise information is compared, to determine that audio volume control optimizes information, to avoid such as making an uproar in noise reduction process due to many factors Sound and vibration is excessive, noise and audio-frequency information have similar subband etc., and damages the sound quality of initial audio information, Jin Erti High noise reduction efficacy preferably restores initial audio information.

Detailed description of the invention

By reading a detailed description of non-restrictive embodiments in the light of the attached drawings below, of the invention other Feature, objects and advantages will become more apparent upon:

Fig. 1 is the flow diagram of the method for carrying out noise reduction process to audio-frequency information of one embodiment of the invention；

Fig. 2 is that the process of the method for carrying out noise reduction process to audio-frequency information of another embodiment of the present invention is illustrated Figure；

Fig. 3 is the structural schematic diagram of the system for carrying out noise reduction process to audio-frequency information of one embodiment of the invention；

Fig. 4 is the structural representation of the system for carrying out noise reduction process to audio-frequency information of another embodiment of the present invention Figure；

Fig. 5 is the schematic diagram that waveform optimization is carried out to audio-frequency information of an example of the present invention；

Fig. 6 is another exemplary schematic diagram that waveform optimization is carried out to audio-frequency information of the present invention.

The same or similar appended drawing reference represents the same or similar component in attached drawing.

Specific embodiment

Present invention is further described in detail with reference to the accompanying drawing.

Fig. 1 is the flow diagram of the method for carrying out noise reduction process to audio-frequency information of one embodiment of the invention.

Wherein, the method for the present embodiment is mainly realized by the first equipment and the second equipment.Wherein, first equipment Including any equipment that can be used in input audio information；Preferably, first equipment is for playing multimedia terminal Equipment, such as intelligent television equipment.Wherein, second equipment is used to provide service at least one first equipment；Preferably, institute State the server group that the second equipment includes but is not limited to single network server, multiple network servers composition；It is highly preferred that institute State the second equipment be Cloud Server, the Cloud Server be used for indicates be based on cloud computing (Cloud Computing) by a large amount of The cloud that computer or network server are constituted, wherein cloud computing is one kind of distributed computing, by the calculating of a group loose couplings One super virtual computer of machine collection composition.

It should be noted that first equipment and the second equipment are only for example, other are existing or are likely to occur from now on The first equipment and the second equipment be such as applicable to the present invention, should also be included within the scope of protection of the present invention, and with reference side Formula is incorporated herein.

Method according to the present embodiment includes step S101, step S102, step S103, step S104, step S105, step Rapid S106 and step S107.

In step s101, the ambient noise information at current time is supplied to the second equipment by the first equipment.

Wherein, the ambient noise information includes any information relevant to noise in current time actual environment.Its In, the actual environment is used to indicate the first equipment current environment；For example, the first equipment is the intelligence electricity in parlor Depending on the actual environment is used to indicate the parlor environment.

Preferably, the ambient noise information includes but is not limited to: the waveform of the noise in actual environment, wavelength, frequency, Amplitude etc..Wherein, the noise in actual environment includes but is not limited to:

1) with the noise of fixed frequency, such as the noise of air-conditioning, refrigerator household electrical appliance in actual environment；

2) with the noise of peculiar frequency, such as the cry of user's one's voice in speech, pet in actual environment；

3) with the noise in specific time period in actual environment, such as the ringing at every hour sound of user equipment, every morning Outdoor construction sound between 8:00-9:00 etc..

Specifically, the first equipment by the implementation that the ambient noise information at current time is supplied to the second equipment include but It is not limited to:

1) current time in the audio-frequency information and actual environment that the first equipment was exported according to the first equipment current time Audio-frequency information, determine the ambient noise information at current time；Then, the first equipment provides identified ambient noise information To the second equipment.

Wherein, the audio-frequency information of the first equipment current time input includes any sound currently exported with the first equipment Frequently corresponding information, the audio currently exported are unrelated with ambient noise.Preferably, the first equipment current time input Audio-frequency information include but is not limited to: waveform, wavelength, frequency, amplitude of the audio that the first equipment currently exports etc..

Wherein, the audio-frequency information at current time includes any with collected sound in the actual environment in the actual environment Frequently relevant information, collected audio is that (including the first equipment is current for the sound that is actually hearing of human ear in the actual environment for this The audio and ambient noise of output).Preferably, the audio-frequency information at current time includes but is not limited in the actual environment: The waveform, wavelength of collected audio, frequency, amplitude etc. in the actual environment.

Wherein, the audio-frequency information that various ways obtain current time in actual environment can be used in the first equipment.

For example, the audio-frequency information adopted sound unit and directly collect current time in actual environment in the first equipment.

In another example the first equipment obtain except first equipment adopt it is that sound equipment is collected, in actual environment when The audio-frequency information at preceding moment.Wherein, the sound equipment of adopting includes any equipment that can be used in acquiring audio, such as mobile phone, sensing Device etc..Preferably, the sound equipment of adopting is the equipment that can be used with first coordinative composition of equipments, such as remote controler, stereo set Deng.

It should be noted that if adopting sound equipment there are multiple in current environment, then the first equipment can be based on many factors, such as Multiple weight for adopting sound equipment, the position in the current environment, acquisition direction etc., come when determining current in actual environment The audio-frequency information at quarter.For example, the weight highest of the portable mobile phone of user, then the first equipment can directly be obtained, should The collected audio-frequency information of mobile phone, the audio-frequency information as current time in actual environment.

Specifically, current in the audio-frequency information and actual environment that the first equipment was exported according to the first equipment current time The audio-frequency information at moment determines ambient noise information corresponding with the noise in current time actual environment；Then, it first sets It is standby by the ambient noise information be supplied to the second equipment.

For example, waveform corresponding with the audio-frequency information at current time in actual environment is S (0), it is current with the first equipment The corresponding waveform of audio-frequency information of moment output is S ' (0), then the first equipment carries out subtracting each other processing to S (0) and S ' (0), and The waveform obtained after processing will be subtracted each other and be determined as ambient noise information；Then, which is supplied to by the first equipment Second equipment.

2) the first equipment directly receive provided by other equipment, the ambient noise information at current time, and by the ring Border noise information is supplied to the second equipment.

Wherein, the ambient noise information that various ways obtain current time in actual environment can be used in the other equipment. For example, the audio in the other equipment acquisition actual environment, and current time is determined by analyzing the ingredient in the audio Ambient noise information；In another example the other equipment are collected by its, in actual environment with fixed frequency noise and Noise with the specific time period is the ambient noise information at current time.

It should be noted that the above-mentioned examples are merely illustrative of the technical solutions of the present invention, rather than to limit of the invention System, it should be appreciated by those skilled in the art that any realization side that the ambient noise information at current time is supplied to the second equipment Formula should be included in the scope of the present invention.

In step s 102, the second equipment receives the ambient noise information at the current time from the first equipment.

Specifically, the second equipment receives the current time from the first equipment based on the connection between the first equipment Ambient noise information.

For example, the second equipment is Cloud Server.In step s101, the first equipment is connected based on cloud by the ring at current time Border noise information is uploaded to Cloud Server；In step s 102, Cloud Server receives the ring at the current time from the first equipment Border noise information.

In step s 103, the second equipment is according to the ambient noise information at current time, and corresponding with the first equipment History noise information determines the noise prediction information for predicting the noise of following instant.

Wherein, the following instant indicates at the time of after current time；Preferably, the following instant is worked as with described It is separated by unit time (such as unit time is 500ms) between the preceding moment, which is adjustable；For example, the first equipment According to the parameter setting of first equipment unit time, alternatively, user's self-setting unit time.

Wherein, the history noise information corresponding to the first equipment includes any history relevant with first equipment Noise information.Preferably, the history noise information corresponding with the first equipment includes but is not limited to:

1) the history noise data of the first equipment.

Wherein, the history noise data of first equipment includes any history environment with the first equipment local environment The relevant data of noise；Preferably, the history noise data of first equipment includes all of the first equipment that history obtains Ambient noise information.

2) the history noise data of other the first equipment associated with first equipment

Wherein, other first equipment associated with the first equipment include it is any have with first equipment it is associated other First equipment.For example, including but is not limited to other associated first equipment of the first equipment: having with first equipment identical Other first equipment of model, other first equipment for belonging to the same manufacturer with first equipment are located at first equipment Other first equipment in the same cell etc..

Wherein, the history noise data of other the first equipment includes any history with the other equipment local environment The relevant data of ambient noise；Preferably, the history noise data of the other equipment includes that described other of history acquisition are set Standby all ambient noise information；For example, the first equipment is smart television, other first equipment associated with first equipment Other smart televisions including being located at the same cell with first equipment, then the history noise data of other the first equipment include All ambient noise information for other smart televisions that history obtains.

Wherein, the noise prediction information includes any for predicting the information of the noise of following instant；Preferably, described Noise prediction information includes but is not limited to: being used to indicate and carries out the information of noise reduction to the noise with fixed frequency, is used to indicate The information of noise reduction (namely retaining the noise with peculiar frequency) do not carried out to the noise with peculiar frequency, be used to indicate to tool There is the noise in specific time period to carry out the information etc. of noise reduction.

Specifically, the second equipment removes the ambient noise information at current time, obtains at least one noise contribution, And history noise information corresponding with the first equipment is combined, determine the noise prediction information for predicting following instant noise.

For example, in step s 102, the second equipment receives the ambient noise information at the t0 moment from the first equipment；In step In rapid S103, the second equipment removes the ambient noise information, obtains following noise contribution: the noise with fixed frequency Noise1, noise noise2 and noise3 with peculiar frequency；Then, the second equipment is according to the equal noise contributions, and combines The history noise information of first equipment determines the noise prediction information for predicting the noise at t1 moment, the noise prediction information Instruction carries out noise reduction to noise1, and does not carry out noise reduction to noise2 and noise3.

In another example in step s 102, the second equipment receives the ambient noise information at the t2 moment from the first equipment；? In step S103, the second equipment removes the ambient noise information, obtains following noise contribution: making an uproar with fixed frequency Sound noise4, the noise noise5 with peculiar frequency；Also, the second equipment combines the history noise information of the first equipment, really The noise noise6 with the specific time period will be present in the fixed subsequent t3 moment；Then the second equipment is determined for predicting the t3 moment Noise noise prediction information, the noise prediction information instruction to noise4 carry out noise reduction and not to noise5 carry out noise reduction, And it indicates following instant there are noise noise6.

For another example in step s 102, the second equipment receives the ambient noise information at the t4 moment from the first equipment；? In step S103, the second equipment removes the ambient noise information, obtains following noise contribution: making an uproar with fixed frequency Sound noise7, the noise noise8 with the specific time period；Also, the second equipment combines the history noise of the first equipment to believe Breath determines that the subsequent t5 moment, there will be no noise noise8；Then the second equipment determines making an uproar for the noise for predicting the t5 moment Sound predictive information, noise prediction information instruction carry out noise reduction to noise7, and indicate that noise noise8 is not present in following instant.

As a kind of preferred embodiment of step S103, the second equipment is according to the ambient noise information at current time, with first The corresponding history noise information of equipment, and user interest information is combined, to determine the noise for predicting the noise of following instant Predictive information.

Wherein, the user interest information includes any being used to indicate user interested audio types (such as news, music Deng) information.Wherein, the second equipment can be used various ways and obtain user interest information；For example, the second equipment is set according to user Confidence breath directly acquires user interest information；In another example in audio of second equipment by history broadcasting in the first equipment of analysis Hold, to obtain user interest information.

As an example, when the user interest information instruction interested audio types of user are news；Then the second equipment Identified noise prediction information includes instruction to the noise (sound that such as user speaks in ambient noise information with peculiar frequency Sound) carry out noise reduction process information.

It should be noted that the above-mentioned examples are merely illustrative of the technical solutions of the present invention, rather than to limit of the invention System, it should be appreciated by those skilled in the art that any ambient noise information according to current time, and it is corresponding with the first equipment History noise information determines the implementation for predicting the noise prediction information of the noise of following instant, should be included in this In the range of invention.

In step S104, the noise prediction information is supplied to the first equipment by the second equipment.

Specifically, the noise prediction information is supplied to first based on the connection between the first equipment by the second equipment Equipment.

In step s105, the first equipment receives the noise prediction information from the second equipment.

Specifically, the first equipment receives the noise prediction letter from the second equipment based on the connection between the second equipment Breath.

In step s 106, the first equipment is according to the noise prediction information and the ambient noise information, after prediction The ambient noise information at continuous moment.

For example, in step s105, the first equipment receives the noise prediction information from the second equipment, noise prediction letter Breath instruction carries out noise reduction to noise1, and does not carry out noise reduction to noise2 and noise3；Then in step s 106, the first equipment pair Noise1 in the ambient noise information at current time carries out noise reduction, and retains noise2 and noise3, come it is being predicted, after The ambient noise information at continuous moment.

In another example in step s105, the first equipment receives the noise prediction information from the second equipment, the noise prediction Information instruction carries out noise reduction to noise4 and does not carry out noise reduction to noise5, and indicates following instant there are noise noise6；Then In step s 106, the first equipment carries out noise reduction to the noise4 in the ambient noise information at current time, and retains noise5, And addition noise noise6, come ambient noise information predicted, following instant.

For another example in step s105, the first equipment receives the noise prediction information from the second equipment, the noise prediction Information instruction carries out noise reduction to noise7, and indicates that noise noise8 is not present in following instant；Then in step s 106, it first sets The standby noise7 in the ambient noise information at current time carries out noise reduction, and removes noise noise8, come it is being predicted, after The ambient noise information at continuous moment.

It should be noted that the above-mentioned examples are merely illustrative of the technical solutions of the present invention, rather than to limit of the invention System, it should be appreciated by those skilled in the art that it is any according to the noise prediction information and the ambient noise information, after prediction The implementation of the ambient noise information at continuous moment, should be included in the scope of the present invention.

In step s 107, the first equipment is according to the ambient noise information of following instant, to first equipment subsequent The audio-frequency information of moment output carries out noise reduction process, the audio-frequency information after obtaining noise reduction.

For example, waveform corresponding to ambient noise information of first equipment to following instant carries out phase reversal and with amplitude Processing, and by the waveform obtained after the first equipment waveform, with the processing corresponding to the audio-frequency information that following instant exports into Row is added, to obtain waveform corresponding to the audio-frequency information after noise reduction.

It should be noted that the above-mentioned examples are merely illustrative of the technical solutions of the present invention, rather than to limit of the invention System, it should be appreciated by those skilled in the art that any ambient noise information according to following instant, to first equipment subsequent The audio-frequency information of moment output carries out noise reduction process, and the implementation of the audio-frequency information after obtaining noise reduction should be included in this hair In bright range.

As a kind of preferred embodiment of the present embodiment, the scheme of the present embodiment is further comprising the steps of: the first equipment is rear Audio-frequency information after continuous moment output noise reduction.

For example, in step s 107, the first equipment obtains following instant, audio-frequency information after noise reduction；Then the first equipment Audio-frequency information when reaching the following instant, after exporting the noise reduction.

It should be noted that preferably, if the first equipment there are multiple sound channels (5 sound channels in such as 5.1 sound channel systems), And first equipment obtain and correspond respectively to each sound channel, current time ambient noise information；Then for multiple sound channel In each sound channel, the method that the first equipment and the second equipment execute the present embodiment, to obtain following instant in the sound channel, drop Audio-frequency information after making an uproar, and audio-frequency information obtained is exported in the sound channel in following instant.

Following problems existing for scheme present invention finds the prior art: 1) when using above-mentioned approach a) progress noise reduction When, since ambient noise is the ambient noise of dynamic change namely current time and the ambient noise of following instant is usually Different, this makes the audio-frequency information obtained after noise reduction be influenced to be totally unknown, noise reduction by the ambient noise of following instant Effect may be extremely low.2) it when carrying out noise reduction using above-mentioned approach b), needs to spend a large amount of cost, and its noise reduction effect is owed It is good.

It, can be according to the ambient noise information and first in current time actual environment according to the scheme of the present embodiment The history noise information of equipment, to predict the ambient noise information of following instant, further according to the ambient noise information for predicting to obtain Noise reduction process is carried out to the audio-frequency information of following instant, so that first before audio-frequency information and noise reduction that human ear is finally heard The equipment initial audio information difference to be exported is minimum, also can high degree reduction initial audio information；Further, it is possible to In conjunction with the history noise information of other the first equipment associated with the first equipment, to obtain more accurately prediction noise information, To reach better noise reduction effect；Furthermore, it is not necessary that changing the decoration in indoor environment locating for the first equipment, so as to big Big save the cost.

Fig. 2 is that the process of the method for carrying out noise reduction process to audio-frequency information of another embodiment of the present invention is illustrated Figure.

Wherein, the method for the present embodiment is mainly realized by the first equipment and the second equipment.Wherein, referring to Fig.1 in it is right Any explanation made by first equipment and second equipment, the mode quoted are incorporated herein.

Method according to the present embodiment includes step S201, step S202, step S203, step S204, step S205, step Rapid S206, step S207, step S208 and step S209.

In step s 201, the ambient noise information at current time is supplied to the second equipment by the first equipment.

Wherein, the implementation of the step S201 with referring to Fig.1 described in the implementation of step S101 it is identical or Similar, details are not described herein.

In step S202, the second equipment receives the ambient noise information at the current time from the first equipment.

Wherein, the implementation of the step S202 with referring to Fig.1 described in the implementation of step S102 it is identical or Similar, details are not described herein.

In step S203, the second equipment is and corresponding with the first equipment according to the ambient noise information at current time History noise information determines the noise prediction information for predicting the noise of following instant.

Wherein, the implementation of the step S203 with referring to Fig.1 described in the implementation of step S103 it is identical or Similar, details are not described herein.

In step S204, the second equipment is by the ring of the audio-frequency information of the following instant of the first equipment and the current time Border noise information is compared, and determines that the audio volume control for the audio-frequency information of the following instant optimizes information.

Wherein, the audio volume control optimization information includes that any be used to indicate carries out waveform to the audio-frequency information of following instant The information of optimization；Preferably, waveform optimization indicated by the audio volume control optimization information includes but is not limited to:

1) amplitude of waveform corresponding with audio-frequency information is adjusted.

Wherein, the adjustment includes the amplitude of increase or smaller waveform corresponding with audio-frequency information.

In the case of this waveform optimization, it is preferable that the audio volume control optimization information includes but is not limited to: vibration adjusted Width size, for proportionality coefficient of adjustment etc..

2) shape of the subband in waveform corresponding with the audio-frequency information is adjusted.

Wherein, the adjustment includes adjusting any parameter relevant to the shape of the subband.

In the case of this waveform optimization, it is preferable that the audio volume control optimization information includes but is not limited to: being used to indicate institute State the information of subband, the waveform parameter (such as phase, amplitude) for needing to be adjusted etc..

It should be noted that above-mentioned waveform optimization is only for example, those skilled in the art will be understood that it is any can to The optimization that the corresponding waveform of audio-frequency information carries out, should be included in the range of waveform optimization of the present invention.

Specifically, the second equipment is by the ambient noise of the audio-frequency information of the following instant of the first equipment and the current time Information is compared, and determines the waveform optimization for needing to carry out, and determines audio volume control optimization letter corresponding with the waveform optimization Breath.

For example, Fig. 5 is the schematic diagram for carrying out waveform optimization to audio-frequency information of an example of the present invention.Wherein, figure a) is The schematic diagram that the audio-frequency information of the following instant of first equipment is compared with the ambient noise information at the current time；Its In, S₁It (t) is waveform corresponding with the audio-frequency information of the following instant of the first equipment, S_n1To believe with the ambient noise at current time Cease corresponding waveform, the second equipment is by S₁(t) and S_n1It is compared, determines S₁(t) amplitude and S_n1Amplitude between difference Smaller, then the second equipment, which determines, is directed to S₁(t) audio volume control optimizes information, which optimizes information instruction for S₁(t) Amplitude increasing is twice.

In another example Fig. 6 is another exemplary schematic diagram for carrying out waveform optimization to audio-frequency information of the present invention.Wherein, scheme A) signal for the audio-frequency information of the following instant of the first equipment to be compared with the ambient noise information at the current time Figure；Wherein, S₂It (t) is waveform corresponding with the audio-frequency information of the following instant of the first equipment, S_n2For the environment with current time The corresponding waveform of noise information, the second equipment is by S₂(t) and S_n2It is compared, determines S₂(t) and S_n2In be located at dashed circle in Subband it is more similar, then the second equipment determine be directed to S₂(t) audio volume control optimizes information, audio volume control optimization letter Breath instruction adjustment S₂(t) it is located at the shape of the subband in dashed circle, and the waveform parameter for needing to be adjusted in.

It should be noted that the above-mentioned examples are merely illustrative of the technical solutions of the present invention, rather than to limit of the invention System, it should be appreciated by those skilled in the art that the audio-frequency information of any following instant by the first equipment and the current time Ambient noise information is compared, and determines the realization side of the audio volume control optimization information for the audio-frequency information of the following instant Formula should be included in the scope of the present invention.

It should be noted that those skilled in the art will be understood that had no between step S203 and step S204 successively it is suitable Sequence.For example, the second equipment first carries out step S204 to determine that audio volume control optimizes information, then executes step after step S202 Rapid S203 determines prediction noise information.In another example the second equipment can parallel execution of steps S203 and step S204 it is pre- to determine It surveys noise information and audio volume control optimizes information.

In step S205, noise prediction information and audio volume control optimization information are supplied to first and set by the second equipment It is standby.

Specifically, the second equipment is excellent by noise prediction information and audio volume control based on the connection between the first equipment Change information and is supplied to the first equipment.

In step S206, the first equipment receives noise prediction information and audio volume control from the second equipment and optimizes letter Breath.

Specifically, the first equipment receives the noise prediction letter from the second equipment based on the connection between the second equipment Breath and audio volume control optimize information.

In step S207, the first equipment is according to the noise prediction information and the ambient noise information, after prediction The ambient noise information at continuous moment.

Wherein, the implementation of the step S207 with referring to Fig.1 described in the implementation of step S106 it is identical or Similar, details are not described herein.

In step S208, the first equipment optimizes information according to the audio volume control received, believes the audio of following instant Breath carries out waveform optimization.

For example, the b of Fig. 5) be optimization after audio-frequency information schematic diagram；Wherein, S_n1For the ambient noise with current time The corresponding waveform of information, S₁' (t) be according to audio volume control optimize information, to Fig. 5 a) in S₁(t) it is obtained after carrying out waveform optimization The audio-frequency information arrived.

In another example the b of Fig. 6) be optimization after audio-frequency information schematic diagram；Wherein, S_n2To make an uproar with the environment at current time The corresponding waveform of acoustic intelligence, S₂' (t) be according to audio volume control optimize information, to Fig. 6 a) in S₂(t) after carrying out waveform optimization Obtained audio-frequency information.

It should be noted that the above-mentioned examples are merely illustrative of the technical solutions of the present invention, rather than to limit of the invention System, it should be appreciated by those skilled in the art that the audio volume control optimization information that any basis receives, believes the audio of following instant Breath carries out the implementation of waveform optimization, should be included in the scope of the present invention.

In step S209, the first equipment believes the audio after waveform optimization according to the ambient noise information of following instant Breath carries out noise reduction process, the audio-frequency information after obtaining noise reduction.

Wherein, the first equipment drops the audio-frequency information after waveform optimization according to the ambient noise information of following instant Make an uproar processing, the implementation of the audio-frequency information after obtaining noise reduction, with the first equipment in step S107 referring to Fig.1 according to it is subsequent when The ambient noise information at quarter carries out noise reduction process in the audio-frequency information that following instant exports to first equipment, obtains noise reduction The implementation of audio-frequency information afterwards is same or similar, and details are not described herein.

It, can be by the audio-frequency information of the following instant of the first equipment and the current time according to the scheme of the present embodiment Ambient noise information is compared, to determine that audio volume control optimizes information, to avoid due to many factors, such as noise amplitude mistake Greatly, noise and audio-frequency information have similar subband etc., and damage the sound quality of initial audio information, and then improve noise reduction effect Rate preferably restores initial audio information.

Fig. 3 is the structural schematic diagram of the system for carrying out noise reduction process to audio-frequency information of one embodiment of the invention. The system includes the first equipment and the second equipment；First equipment includes first device, which includes the first offer Device 101, first receiving device 102, prediction meanss 103 and processing unit 104；Second equipment includes second device, should Second device includes the second reception device 105, the second determining device 106 and the second offer device 107.

The ambient noise information at current time is supplied to the second equipment by the first offer device 101 of the first equipment.

Specifically, the ambient noise information at current time is supplied to the realization side of the second equipment by the first offer device 101 Formula includes but is not limited to:

1) the first offer device 101 includes that the first determining device (not shown) and the first son provide device (not shown).The The audio-frequency information at current time in the audio-frequency information and actual environment that one determining device was exported according to the first equipment current time, Determine the ambient noise information at current time；Then, the first son provides device and identified ambient noise information is supplied to the Two equipment.

Wherein, the audio-frequency information that various ways obtain current time in actual environment can be used in the first determining device.

For example, the first determining device directly collects the audio-frequency information at current time in actual environment.

In another example the first determining device obtain the first equipment except adopt it is that sound equipment is collected, in actual environment The audio-frequency information at current time.Wherein, the sound equipment of adopting includes any equipment that can be used in acquiring audio, and such as mobile phone passes Sensor etc..Preferably, the sound equipment of adopting is the equipment that can be used with first coordinative composition of equipments, as remote controler, sound equipment are set It is standby etc..

It should be noted that if adopt sound equipment there are multiple in current environment, then the first determining device can based on it is a variety of because Element, such as multiple weight for adopting sound equipment, the position in the current environment, acquisition direction, to determine in actual environment The audio-frequency information at current time.For example, the weight highest of the portable mobile phone of user, then the first determining device can be directly by it Obtain, the collected audio-frequency information of the mobile phone, the audio-frequency information as current time in actual environment.

Specifically, in the audio-frequency information and actual environment that the first determining device was exported according to the first equipment current time The audio-frequency information at current time determines ambient noise information corresponding with the noise in current time actual environment；Then, One son provide device by the ambient noise information be supplied to the second equipment.

For example, waveform corresponding with the audio-frequency information at current time in actual environment is S (0), it is current with the first equipment The corresponding waveform of audio-frequency information of moment output is S ' (0), then the first determining device carries out subtracting each other place to S (0) and S ' (0) Reason, and it is determined as ambient noise information for the waveform obtained after processing is subtracted each other；Then, the first son provides device for the ambient noise Information is supplied to the second equipment.

2) the first offer device 101 directly receives that other equipment are provided, ambient noise information of current time, and general The ambient noise information is supplied to the second equipment.

Second reception device 105 of the second equipment receives the ambient noise information at the current time from the first equipment.

Specifically, the second reception device 105 is received and is set from first based on the connection between the second equipment and the first equipment The ambient noise information at standby current time.

For example, the second equipment is Cloud Server.The first of first equipment provides device 101 and is based on cloud connection for current time Ambient noise information be uploaded to Cloud Server；The environment at the second reception device 105 current time of the reception from the first equipment Noise information.

Second determining device 106 is made an uproar according to the ambient noise information at current time, and history corresponding with the first equipment Acoustic intelligence determines the noise prediction information for predicting the noise of following instant.

1) the history noise data of the first equipment.

Specifically, the second determining device 106 removes the ambient noise information at current time, obtains at least one and makes an uproar Sound ingredient, and history noise information corresponding with the first equipment is combined, determine the noise prediction for predicting following instant noise Information.

For example, the second reception device 105 receives the ambient noise information at the t0 moment from the first equipment；Second determines dress It sets 106 pairs of ambient noise information to remove, obtains following noise contribution: there is the noise noise1 of fixed frequency, have The noise noise2 and noise3 of peculiar frequency；Then, the second determining device 106 is according to the equal noise contributions, and combines first The history noise information of equipment determines the noise prediction information for predicting the noise at t1 moment, noise prediction information instruction Noise reduction is carried out to noise1, and noise reduction is not carried out to noise2 and noise3.

In another example the second reception device 105 receives the ambient noise information at the t2 moment from the first equipment；Second determines Device 106 removes the ambient noise information, obtains following noise contribution: noise noise4, tool with fixed frequency There is the noise noise5 of peculiar frequency；Also, the second equipment combines the history noise information of the first equipment, when determining subsequent t3 The noise noise6 with the specific time period will be present in quarter；Then the second determining device 106 is determined for predicting making an uproar for t3 moment The noise prediction information of sound, noise prediction information instruction carries out noise reduction to noise4 and does not carry out noise reduction to noise5, and refers to Showing following instant, there are noise noise6.

For another example the second reception device 105 receives the ambient noise information at the t4 moment from the first equipment；Second determines Device 106 removes the ambient noise information, obtains following noise contribution: noise noise7, tool with fixed frequency There is the noise noise8 in specific time period；Also, the second determining device 106 combines the history noise information of the first equipment, really The fixed subsequent t5 moment will be not present noise noise8；Then the second equipment determines the noise prediction for predicting the noise at t5 moment Information, noise prediction information instruction carry out noise reduction to noise7, and indicate that noise noise8 is not present in following instant.

As a kind of preferred embodiment of the second determining device 106, the second determining device 106 is made an uproar according to the environment at current time Acoustic intelligence, history noise information corresponding with the first equipment, and user interest information is combined, to determine for predicting following instant Noise noise prediction information.

Wherein, the user interest information includes any being used to indicate user interested audio types (such as news, music Deng) information.Wherein, the second determining device 106 can be used various ways and obtain user interest information；For example, second determines dress It sets 106 and user interest information is directly acquired according to information-setting by user；In another example the second determining device 106 passes through analysis first The audio content that history plays in equipment, to obtain user interest information.

As an example, when the user interest information instruction interested audio types of user are news；Then second determine The noise prediction information that device 106 determines includes that the noise in ambient noise information with peculiar frequency, (such as user is said for instruction The sound of words) carry out noise reduction process information.

The noise prediction information is supplied to the first equipment by the second offer device 107.

Specifically, second device 107 is provided based on the connection between the second equipment and the first equipment, by the noise prediction Information is supplied to the first equipment.

The first receiving device 102 of first equipment receives the noise prediction information from the second equipment.

Specifically, first receiving device 102 receives the noise from the second equipment based on the connection between the second equipment Predictive information.

Prediction storage 103 predicts the ring of following instant according to the noise prediction information and the ambient noise information Border noise information.

For example, first receiving device 102 receives the noise prediction information from the second equipment, noise prediction information instruction Noise reduction is carried out to noise1, and noise reduction is not carried out to noise2 and noise3；Then predict that the environment at 103 pairs of current times of storage is made an uproar Noise1 in acoustic intelligence carries out noise reduction, and retains noise2 and noise3, come ambient noise predicted, following instant Information.

In another example first receiving device 102 receives the noise prediction information from the second equipment, which refers to Show and noise reduction is carried out to noise4 and noise reduction is not carried out to noise5, and indicates following instant there are noise noise6；Then prediction is deposited It stores up the noise4 in the ambient noise information at 103 pairs of current times and carries out noise reduction, and retain noise5, and add noise Noise6, come ambient noise information predicted, following instant.

For another example first receiving device 102 receives the noise prediction information from the second equipment, which refers to Show and noise reduction is carried out to noise7, and indicates that noise noise8 is not present in following instant；Then predict the ring at 103 pairs of current times of storage Noise7 in the noise information of border carries out noise reduction, and removes noise noise8, come ambient noise predicted, following instant Information.

Processing unit 104 exports first equipment in following instant according to the ambient noise information of following instant Audio-frequency information carries out noise reduction process, the audio-frequency information after obtaining noise reduction.

For example, waveform corresponding to ambient noise information of the processing unit 104 to following instant carries out phase reversal and with vibration The processing of width, and the wave that will be obtained after the first equipment waveform, with the processing corresponding to the audio-frequency information that following instant exports Shape is added, to obtain waveform corresponding to the audio-frequency information after noise reduction.

As a kind of preferred embodiment of the present embodiment, the first device of the present embodiment further includes output device (not shown). Audio-frequency information of the output device after following instant exports noise reduction.

For example, processing unit 104 obtains following instant, audio-frequency information after noise reduction；Then output device is after reaching this When the continuous moment, the audio-frequency information after exporting the noise reduction.

It should be noted that preferably, if the first equipment there are multiple sound channels (5 sound channels in such as 5.1 sound channel systems), And first equipment obtain and correspond respectively to each sound channel, current time ambient noise information；Then for multiple sound channel In each sound channel, system executes the operation of the present embodiment, to obtain following instant in the sound channel, audio letter after noise reduction Breath, and audio-frequency information obtained is exported in the sound channel in following instant.

In the prior art, it is defeated to the first equipment (such as smart television) to reduce ambient noise to generally use following two approach The interference that audio out generates: a) the first equipment is directly according to the ambient noise information at its current time obtained, to it is subsequent when The audio-frequency information at quarter carries out noise reduction；B) pass through decoration decorate in the indoor environment locating for the first equipment, to can be used in noise reduction Object (such as Double-layer sound-insulation wall, sound-absorbing carpet), to believe during being transferred to human ear after audio-frequency information output the audio Breath carries out noise reduction.

Fig. 4 is the structural representation of the system for carrying out noise reduction process to audio-frequency information of another embodiment of the present invention Figure.The system includes the first equipment and the second equipment；First equipment includes first device, which mentions including first For device 101, first receiving device 102, prediction meanss 103 and processing unit 104；Second equipment includes second device, The second device includes the second reception device 105, the second determining device 106, second offer device 107 and third determining device 108；Wherein, the first receiving device 102 further comprises the first sub- reception device 102-1, the processing unit 104 into one Step includes waveform optimization device 104-1 and sub-processing unit 104-2, and the second offer device 107 further comprises the second son Device 107-1 is provided.

The ambient noise information at current time is supplied to the second equipment by the first offer device 101.

Wherein, the implementation of the first offer device 101 is described in detail in referring to Fig. 3, and details are not described herein.

The ambient noise information at the second reception device 105 current time of the reception from the first equipment.

Wherein, the implementation of the second reception device 105 is described in detail in referring to Fig. 3, and details are not described herein.

Wherein, the implementation of the second determining device 106 is described in detail in referring to Fig. 3, and details are not described herein.

Third determining device 108 is by the ambient noise of the audio-frequency information of the following instant of the first equipment and the current time Information is compared, and determines that the audio volume control for the audio-frequency information of the following instant optimizes information.

Specifically, third determining device 108 is by the audio-frequency information of the following instant of the first equipment and the current time Ambient noise information is compared, and determines the waveform optimization for needing to carry out, and determine audio wave corresponding with the waveform optimization Shape optimizes information.

For example, Fig. 5 is the schematic diagram for carrying out waveform optimization to audio-frequency information of an example of the present invention.Wherein, figure a) is The schematic diagram that the audio-frequency information of the following instant of first equipment is compared with the ambient noise information at the current time；Its In, S₁It (t) is waveform corresponding with the audio-frequency information of the following instant of the first equipment, S_n1To believe with the ambient noise at current time Cease corresponding waveform, third determining device 108 is by S₁(t) and S_n1It is compared, determines S₁(t) amplitude and S_n1Amplitude between Difference it is smaller, then third determining device 108 determine be directed to S₁(t) audio volume control optimizes information, audio volume control optimization letter Breath is indicated S₁(t) amplitude increasing is twice.

In another example Fig. 6 is another exemplary schematic diagram for carrying out waveform optimization to audio-frequency information of the present invention.Wherein, scheme A) signal for the audio-frequency information of the following instant of the first equipment to be compared with the ambient noise information at the current time Figure；Wherein, S₂It (t) is waveform corresponding with the audio-frequency information of the following instant of the first equipment, S_n2For the environment with current time The corresponding waveform of noise information, third determining device 108 is by S₂(t) and S_n2It is compared, determines S₂(t) and S_n2In be located at dotted line Subband in circle is more similar, then third determining device 108, which determines, is directed to S₂(t) audio volume control optimizes information, should Audio volume control optimizes information instruction adjustment S₂(t) it is located at the shape of the subband in dashed circle in, and is adjusted Whole waveform parameter.

It should be noted that those skilled in the art will be understood that the second determining device 106 and third determining device 108 Sequencing is had no between the operation of execution.For example, after the second reception device 105 executes operation, third determining device 108 Operation is first carried out to determine that audio volume control optimizes information, the second determining device 106 redos to determine prediction noise information. In another example the second determining device 106 and third determining device 108 execute operation parallel to determine prediction noise information and audio Waveform optimization information.

Second son provides device 107-1 and noise prediction information and audio volume control optimization information is supplied to the first equipment.

Specifically, the second son provides device 107-1 based on the connection between the second equipment and the first equipment, by noise prediction Information and audio volume control optimization information are supplied to the first equipment.

The sub- reception device 102-1 of the first of first equipment receives noise prediction information and audio wave from the second equipment Shape optimizes information.

Specifically, the first sub- reception device 102-1 is based on the connection between the first equipment and the second equipment, receives from the The noise prediction information and audio volume control of two equipment optimize information.

Prediction meanss 103 predict the ring of following instant according to the noise prediction information and the ambient noise information Border noise information.

Wherein, the implementation of the prediction meanss 103 is described in detail in referring to Fig. 3, and details are not described herein.

Waveform optimization device 104-1 optimizes information according to the audio volume control that receives, to the audio-frequency information of following instant into Row waveform optimization.

For example, the b of Fig. 5) be optimization after audio-frequency information schematic diagram；Wherein, S_n1For the ambient noise with current time The corresponding waveform of information, S₁' (t) be waveform optimization device 104-1 according to audio volume control optimize information, to Fig. 5 a) in S₁ (t) audio-frequency information obtained after waveform optimization is carried out.

In another example the b of Fig. 6) be optimization after audio-frequency information schematic diagram；Wherein, S_n2To make an uproar with the environment at current time The corresponding waveform of acoustic intelligence, S₂' (t) be waveform optimization device 104-1 according to audio volume control optimize information, to Fig. 6 a) in S₂ (t) audio-frequency information obtained after waveform optimization is carried out.

Sub-processing unit 104-2 carries out the audio-frequency information after waveform optimization according to the ambient noise information of following instant Noise reduction process, the audio-frequency information after obtaining noise reduction.

Wherein, sub-processing unit 104-2 is according to the ambient noise information of following instant, to the audio-frequency information after waveform optimization Carry out noise reduction process, the implementation of the audio-frequency information after obtaining noise reduction, with referring to processing unit 104 in Fig. 3 according to it is subsequent when The ambient noise information at quarter carries out noise reduction process in the audio-frequency information that following instant exports to first equipment, obtains noise reduction The implementation of audio-frequency information afterwards is same or similar, and details are not described herein.

It, can be by the audio-frequency information of the following instant of the first equipment and the current time according to the scheme of the present embodiment Ambient noise information is compared, to determine that audio volume control optimizes information, thus avoid in noise reduction process due to many factors, Such as noise amplitude is excessive, noise and audio-frequency information have similar subband, and damages the sound quality of initial audio information, into And noise reduction efficacy is improved, preferably restore initial audio information.

It should be noted that the present invention can be carried out in the assembly of software and/or software and hardware, for example, this hair Specific integrated circuit (ASIC) can be used in bright each device or any other is realized similar to hardware device.In one embodiment In, software program of the invention can be executed to implement the above steps or functions by processor.Similarly, of the invention Software program (including relevant data structure) can be stored in computer readable recording medium, for example, RAM memory, Magnetic or optical driver or floppy disc and similar devices.In addition, some of the steps or functions of the present invention may be implemented in hardware, example Such as, as the circuit cooperated with processor thereby executing each step or function.

It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims Variation is included in the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.This Outside, it is clear that one word of " comprising " does not exclude other units or steps, and odd number is not excluded for plural number.That states in system claims is multiple Unit or device can also be implemented through software or hardware by a unit or device.The first, the second equal words are used to table Show title, and does not indicate any particular order.

Claims

1. a kind of method for carrying out noise reduction process to audio-frequency information in the first equipment, wherein this method comprises:

B. the noise prediction information from the second equipment is received, wherein second equipment makes an uproar to the environment at the current time Acoustic intelligence is removed, and obtains at least one noise contribution, and combine history noise information corresponding with the first equipment and use Family interest information determines the noise prediction information for predicting the noise of following instant；

C. according to the noise prediction information and the ambient noise information, the ambient noise information of following instant is predicted；

D. according to the ambient noise information of the following instant, audio-frequency information that first equipment is exported in following instant into Row noise reduction process, the audio-frequency information after obtaining noise reduction；

Wherein, the noise prediction information includes at least one of the following:

It is used to indicate the information that noise reduction is carried out to the noise with fixed frequency；

It is used to indicate the information that noise reduction is not carried out to the noise with peculiar frequency；

It is used to indicate the information that noise reduction is carried out to the noise with the specific time period.

2. according to the method described in claim 1, wherein, the step b includes:

It receives noise prediction information and audio volume control from the second equipment and optimizes information；

Wherein, the step d includes:

Optimize information according to the audio volume control, waveform optimization is carried out to the audio-frequency information；

According to the ambient noise information of the following instant, noise reduction process is carried out to the audio-frequency information after the waveform optimization, is obtained Audio-frequency information after obtaining noise reduction.

3. according to the method described in claim 2, wherein, the waveform optimization includes at least one of the following:

Adjust the amplitude of waveform corresponding with the audio-frequency information；

Adjust the shape of the subband in waveform corresponding with the audio-frequency information.

4. according to the method described in claim 3, wherein, the step a includes:

According to the audio-frequency information at current time in the audio-frequency information and actual environment of the output of the first equipment current time, determination is worked as The ambient noise information at preceding moment；

Identified ambient noise information is supplied to the second equipment.

5. method according to claim 1 to 4, wherein this method further include:

Audio-frequency information after following instant exports noise reduction.

6. a kind of for providing the method for noise prediction information to the first equipment in the second equipment, wherein this method comprises:

B. the ambient noise information at the current time is removed, obtains at least one noise contribution, and combine and first The corresponding history noise information of equipment and user interest information determine the noise prediction letter for predicting the noise of following instant Breath；

C. the noise prediction information is supplied to the first equipment；

7. according to the method described in claim 6, wherein, history noise information corresponding with the first equipment includes:

The history noise data of first equipment；

The history noise data of other the first equipment associated with first equipment.

8. according to the method described in claim 6, wherein, this method further include:

The audio-frequency information of the following instant of first equipment is compared with the ambient noise information at the current time, Determine that the audio volume control for the audio-frequency information of the following instant optimizes information；

Wherein, the step C includes:

The noise prediction information and audio volume control optimization information are supplied to the first equipment.

9. according to the method described in claim 8, wherein, the audio volume control optimization information is used to indicate at least one of following wave Shape optimization:

10. method according to any one of claims 6 to 9, wherein second equipment is Cloud Server.

11. a kind of for carrying out the first device of noise reduction process to audio-frequency information in the first equipment, wherein the first device packet It includes:

First receiving device, for receiving the noise prediction information from the second equipment, wherein second equipment is worked as to described The ambient noise information at preceding moment is removed, and obtains at least one noise contribution, and combine history corresponding with the first equipment Noise information and user interest information determine the noise prediction information for predicting the noise of following instant；

Prediction meanss, for predicting the environment of following instant according to the noise prediction information and the ambient noise information Noise information；

Processing unit exports first equipment in following instant for the ambient noise information according to the following instant Audio-frequency information carry out noise reduction process, obtain noise reduction after audio-frequency information；

12. first device according to claim 11, wherein the first receiving device includes:

First sub- reception device optimizes information for receiving noise prediction information and audio volume control from the second equipment；

Wherein, the processing unit includes:

Waveform optimization device carries out waveform optimization to the audio-frequency information for optimizing information according to the audio volume control；

Sub-processing unit, for the ambient noise information according to the following instant, to the audio-frequency information after the waveform optimization Noise reduction process is carried out, the audio-frequency information after obtaining noise reduction.

13. first device according to claim 12, wherein the waveform optimization includes at least one of the following:

14. first device according to claim 13, wherein described first, which provides device, includes:

First determining device, current time in the audio-frequency information and actual environment for being exported according to the first equipment current time Audio-frequency information, determine the ambient noise information at current time；

First son provides device, for identified ambient noise information to be supplied to the second equipment.

15. first device described in any one of 1 to 14 according to claim 1, wherein the first device further include:

Output device, for the audio-frequency information after following instant exports noise reduction.

16. a kind of for providing the second device of noise prediction information to the first equipment in the second equipment, wherein second dress It sets and includes:

Second determining device is removed for the ambient noise information to the current time, obtain at least one noise at Point, and history noise information corresponding with the first equipment and user interest information are combined, it determines for predicting following instant The noise prediction information of noise；

Second provides device, for the noise prediction information to be supplied to the first equipment；

17. second device according to claim 16, wherein history noise information corresponding with the first equipment includes:

The history noise data of first equipment；

18. second device according to claim 16, wherein the second device further include:

Third determining device, for the environment of the audio-frequency information of the following instant of first equipment and the current time to be made an uproar Acoustic intelligence is compared, and determines that the audio volume control for the audio-frequency information of the following instant optimizes information；

Wherein, the second offer device includes:

Second son provides device, for the noise prediction information and audio volume control optimization information to be supplied to first and set It is standby.

19. second device according to claim 18, wherein audio volume control optimization information be used to indicate it is following at least One waveform optimization:

20. second device described in any one of 6 to 19 according to claim 1, wherein second equipment is Cloud Server.