CN106409279A - Noise processing method and apparatus thereof - Google Patents
Noise processing method and apparatus thereof Download PDFInfo
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- CN106409279A CN106409279A CN201510481905.XA CN201510481905A CN106409279A CN 106409279 A CN106409279 A CN 106409279A CN 201510481905 A CN201510481905 A CN 201510481905A CN 106409279 A CN106409279 A CN 106409279A
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1787—General system configurations
- G10K11/17873—General system configurations using a reference signal without an error signal, e.g. pure feedforward
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1785—Methods, e.g. algorithms; Devices
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1787—General system configurations
- G10K11/17885—General system configurations additionally using a desired external signal, e.g. pass-through audio such as music or speech
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/19—Arrangements of transmitters, receivers, or complete sets to prevent eavesdropping, to attenuate local noise or to prevent undesired transmission; Mouthpieces or receivers specially adapted therefor
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- General Health & Medical Sciences (AREA)
- Signal Processing (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Telephone Function (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
The invention discloses a noise processing method. The noise processing method comprises the following steps of acquiring a noise signal of an environment where a terminal is located; according to a pre-stored phase offset parameter, carrying out phase offset processing on the acquired environment noise signal; carrying out anti-phase processing on the processed environment noise signal so as to acquire an audio simulation signal whose phase is opposite to a phase of the environment noise signal; and outputting the audio simulation signal to audio play equipment connected to the terminal. The invention also discloses a noise processing apparatus. In the invention, the terminal can carry out noise reduction processing on the environment noise.
Description
Technical field
The present invention relates to the method and device in signal processing technology field, more particularly, to noise treatment.
Background technology
Now, the terminal such as mobile phone, pad (panel computer) has become as user communication, the necessary article of amusement.
When user's using terminal carries out conversing, listens music or see video, namely terminal is in playing audio signal
When, if there is noise in the surrounding of user, now user be often desirable to reduce environmental noise bring
Interference.But the audio signal that existing terminal is generally only play to it carries out noise reduction process, and is not directed to ring
Border noise carries out noise reduction process.
Content of the invention
Present invention is primarily targeted at proposing a kind of method and device of noise treatment it is intended to solve existing
Terminal does not carry out the technical problem of noise reduction process to environmental noise.
For achieving the above object, the present invention provides a kind of method of noise treatment, the side of described noise treatment
Method comprises the following steps：
Obtain the noise signal of terminal local environment；
According to the phase offset parameter prestoring, the described environmental noise signal obtaining is carried out at phase offset
Reason；
Environmental noise signal after processing is carried out anti-phase process, to obtain and environmental noise signal phase phase
Anti- audio analog signals；
Export described audio analog signals to the audio-frequence player device being connected with described terminal.
Preferably, the described audio analog signals of described output are to the audio-frequence player device being connected with described terminal
Step after, also include：
When receiving phase adjusted instruction, obtain described phase adjusted and instruct corresponding phase offset parameter；
The described phase offset parameter prestoring is updated using described phase offset parameter.
Preferably, the step of the described noise signal obtaining terminal local environment includes：
When described terminal is connected with audio-frequence player device, the described noise obtaining terminal local environment of execution
The step of signal.
Preferably, the described step that environmental noise signal after processing is carried out anti-phase process includes：
Anti-phase process is carried out to the environmental noise signal after processing using negative circuit.
Preferably, the described audio analog signals of described output are to the audio-frequence player device being connected with described terminal
Step include：
Described audio analog signals are amplified processing；
Described audio analog signals after output amplification are to the audio-frequence player device being connected with described terminal.
Additionally, for achieving the above object, the present invention also proposes a kind of device of noise treatment, described noise
The device processing includes：
First acquisition module, for obtaining the noise signal of terminal local environment；
First phase processing module, for according to the phase offset parameter prestoring, to the described environment obtaining
Noise signal carries out phase offset process；
Second phase processing module, for the environmental noise signal after processing is carried out anti-phase process, to obtain
Obtain the audio analog signals contrary with environmental noise signal phase；
Output module, is set to the audio frequency broadcasting being connected with described terminal for exporting described audio analog signals
Standby.
Preferably, the device of described noise treatment also includes：
Second acquisition module, for when receiving phase adjusted instruction, obtaining described phase adjusted instruction
Corresponding phase offset parameter；
Update module, for updating, using described phase offset parameter, the described phase offset parameter prestoring.
Preferably, described first acquisition module is used for：
When described terminal is connected, obtain the noise signal of terminal local environment with audio-frequence player device.
Preferably, described second phase processing module is used for：
Anti-phase process is carried out to the environmental noise signal after processing using negative circuit.
Preferably, described output module includes：
Amplifying unit, for being amplified processing by described audio analog signals；
Output unit, the described audio analog signals after amplifying for output are to the sound being connected with described terminal
Frequency playback equipment.
The method and device of noise treatment proposed by the present invention, in the method for described noise treatment, terminal
After obtaining the noise signal of terminal local environment, according to the phase offset parameter prestoring to the environment getting
Noise signal carry out phase offset process so that phase offset process after environmental noise signal and user people
The waveform of the environmental noise signal that ear is heard is consistent, then carries out anti-the environmental noise signal after processing again
Phase processor, obtains the audio analog signals contrary with the environmental noise signal phase that user's human ear is heard,
Export described audio analog signals afterwards to the audio-frequence player device being connected with described terminal, when user hears
When described audio analog signals and environmental noise signal, due to environmental noise signal and described audio frequency simulation
The phase place contrast of letter, cancels out each other after two Signal averaging, it is achieved thereby that terminal-pair environmental noise
Carry out noise reduction process.
Brief description
Fig. 1 is the schematic flow sheet of the method first embodiment of noise treatment of the present invention；
Fig. 2 is the schematic flow sheet of the method second embodiment of noise treatment of the present invention；
Fig. 3 is the high-level schematic functional block diagram of the device first embodiment of noise treatment of the present invention；
Fig. 4 is the high-level schematic functional block diagram of the device second embodiment of noise treatment of the present invention；
Fig. 5 shows for the refinement functional module of output module in the device fourth embodiment of noise treatment of the present invention
It is intended to.
The realization of the object of the invention, functional characteristics and advantage will be done further in conjunction with the embodiments referring to the drawings
Explanation.
Specific embodiment
It should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not used to limit
Determine the present invention.
The present invention provides a kind of method of noise treatment, and with reference to Fig. 1, Fig. 1 is the side of noise treatment of the present invention
The schematic flow sheet of method first embodiment.
In the present embodiment, the method for this noise treatment comprises the following steps：
Step S10, obtains the noise signal of terminal local environment；
With the raising of scientific and technological development and people's quality of the life, mobile phone, pad (panel computer) etc. are eventually
End has become as user communication, the carry-on necessary article of amusement, and in daily life, user can commonly used terminal
Carry out conversing, listen music or see video etc..When the surrounding of user has noise, for example, if
User AT STATION, market, the public place such as Waiting Lounge when, there is various noises, Yong Huxi in surrounding
Prestige can reduce the interference that environmental noise brings.In order to solve this problem, in the present embodiment, logical first
Cross the noise signal that the terminals such as the mobile phone that user carries with, pad obtain its local environment.Preferably, exist
In the present embodiment, in terminal, it is previously provided with sound collector, environmental noise is gathered by sound collector,
Obtain environmental noise signal.Wherein, during described environmental noise refers in the environment that user's human ear can be heard
Low frequency noise, the such as frequency noise in the range of 100-1000HZ.
Step S20, according to the phase offset parameter prestoring, carries out phase to the described environmental noise signal obtaining
Position migration processing；
Due to there is a certain distance between terminal and user's human ear, environmental noise is sent to the time of terminal
Poor with the time existence time being sent to user's human ear, environmental noise signal and human ear that terminal gets are listened
To environmental noise signal between can there is phase contrast.Therefore, in the present embodiment, in order to solve terminal
The phase contrast existing between the environmental noise signal that the environmental noise signal getting and user's human ear are heard is asked
Topic is after getting environmental noise signal by step S10, according to the phase offset parameter prestoring, right
The described environmental noise signal obtaining carries out phase offset process, obtains the environment after phase offset is processed and makes an uproar
Message number, the environmental noise letter that the environmental noise signal after described phase offset process is heard with user's human ear
Number signal waveform consistent.
Step S30, the environmental noise signal after processing is carried out anti-phase process, to obtain and environmental noise letter
The audio analog signals of number opposite in phase；
After step S20 obtains the environmental noise signal after phase offset is processed, further by described phase
Environmental noise signal after the migration processing of position carries out reverse-phase process, thus obtain processing with phase offset
The contrary audio analog signals of rear environmental noise signal phase, namely obtain the ring heard with user's human ear
The audio analog signals of border noise signal opposite in phase.It will be appreciated by persons skilled in the art that it is permissible
Environmental noise signal after described phase offset being processed using hardware circuits such as phase inverters carries out anti-phase
Process, the environmental noise signal after described phase offset is processed can also be realized by way of software
Anti-phase process, obtains the audio analog signals contrary with the environmental noise signal phase that user's human ear is heard.
Step S40, exports described audio analog signals to the audio-frequence player device being connected with described terminal.
When the audio frequency mould contrary with the environmental noise signal phase that user's human ear is heard by above-mentioned steps acquisition
After intending signal, terminal exports described audio analog signals to connected audio-frequence player device, by sound
Frequency playback equipment transmits the described audio analog signals exporting to user's human ear.Described audio-frequence player device
Refer to the audio frequency apparatus with audio playing function, including wired earphone, wireless headset etc..When user exists
When hearing the environmental noise signal in described audio analog signals and user's local environment, due to described
Audio analog signals and the opposite in phase of environmental noise signal, described audio analog signals are believed with environmental noise
Number superposition after, two signals are cancelled out each other, thus reducing the interference that environmental noise causes to user.
The scheme that the present embodiment provides, when user needs the interference reducing environmental noise, terminal obtains first
Take the noise signal of its local environment, according to the phase offset parameter prestoring, to the environmental noise getting
Signal carries out phase offset process so that the environmental noise signal after phase offset is processed is listened with user's human ear
The waveform of the environmental noise signal arriving is consistent, then the environmental noise signal after phase offset process is entered again
The anti-phase process of row, obtains the audio analog signals contrary with the environmental noise signal phase that user's human ear is heard,
Finally export described audio analog signals to the audio-frequence player device being connected with described terminal, user hears
When described audio analog signals and environmental noise signal, the described sound of environmental noise signal and opposite in phase
Cancel out each other after the superposition of frequency analogue signal, it is achieved thereby that noise reduction process is carried out by terminal-pair environmental noise,
Reduce the interference that environmental noise causes to user.
Further, as shown in Fig. 2 propose the method the of noise treatment of the present invention based on first embodiment
Two embodiments, in the present embodiment, after described step S40, also include：
Step S50, when receiving phase adjusted instruction, obtains described phase adjusted and instructs corresponding phase place
Offset parameter；
Step S60, updates, using described phase offset parameter, the described phase offset parameter prestoring.
It is fixing for carrying out reducing the noise reduction of noise treatment by terminal in above-described embodiment, but sometimes
Standby family wishes that terminal can reach different noise reductions in different situations.Therefore, in order to improve
The interactivity of user and terminal, make user can also manually control terminal noise reduction, in this reality
Apply in example, terminal is previously provided with a noise reduction audio and adjusts icon.Preferably, described noise reduction audio is adjusted
Icon is a horizontally disposed strip icon, and described noise reduction audio adjusts and arranges a scroll bar on icon,
Pre-set described scroll bar each horizontal level on strip icon and correspond to a phase offset parameter value.
When user is in order to obtain different noise reductions, user's described scroll bar that slides to the left or to the right enters line phase
When adjusting operation, be considered as the phase adjusted instruction that terminal receives user input, when terminal receive described
During phase adjusted instruction, obtain scroll bar current location corresponding phase offset parameter value, using described phase
The phase offset parameter value that position offset parameter values renewal prestores.Then according to the phase offset parameter after updating
Value carries out phase offset process to described environmental noise signal.For example, pre-set scroll bar in strip
The centre horizontal level corresponding phase offset parameter value of icon is 0, when user slides described rolling to the left
During bar, terminal receives phase adjusted instruction, obtains the current location after scroll bar slides to the left corresponding
Phase offset parameter value, updates, using described phase offset parameter value, the phase offset parameter value prestoring.So
Afterwards phase offset process is carried out to described environmental noise signal according to the described phase offset parameter value obtaining.
Environmental noise signal after processing phase offset again carries out reverse-phase process, obtains and listens with user's human ear
The contrary audio analog signals of the environmental noise signal phase that arrives, finally export described audio analog signals,
When user hears described audio analog signals and environmental noise signal, environmental noise signal and phase place phase
Cancel out each other, it is achieved thereby that carrying out at noise reduction to environmental noise after anti-described audio analog signals superposition
Reason.When described scroll bar is slided into different positions by user, it is inclined that terminal gets accordingly different phase places
Shifting parameter value, carries out different phase offset and processes, thus finally realizing different noise reductions.Therefore,
User can adjust the noise reduction of terminal by the described scroll bar that slides, until what user felt to hear
Till environmental noise is the weakest.
The scheme that the present embodiment provides, when terminal instructs in the phase adjusted receiving user input, obtains
Take described phase adjusted to instruct corresponding phase offset parameter value, updated using described phase offset parameter value
The phase offset parameter value prestoring, then according to described phase offset parameter value to the environmental noise letter obtaining
Number carry out phase offset process, then the environmental noise signal after phase offset is processed is carried out at reverse-phase
Reason, obtains the audio analog signals contrary with the environmental noise signal phase that user's human ear is heard, finally defeated
Go out described audio analog signals, when user hears described audio analog signals and environmental noise signal,
Environmental noise signal is cancelled out each other after being superimposed with the described audio analog signals of opposite in phase, it is achieved thereby that
Noise reduction process is carried out to environmental noise.When user carries out different phase adjusted operations in terminal, by
In getting the different phase offset parameter values of correspondence it is achieved that different noise reduction, therefore, pass through
This programme user can reach different noise reductions according to demand, improves Consumer's Experience.
Further, the method the of noise treatment of the present invention is proposed based on first embodiment or second embodiment
Three embodiments, in the present embodiment, above-mentioned steps S10 include：
Step a, when described terminal is connected with audio-frequence player device, execution described acquisition terminal local environment
Noise signal step.
In the above-described embodiments, when terminal gets environmental noise, will carry out reducing the process of noise,
Terminal system resource consumption is big.And, user is dry also without reduction environmental noise in some cases
Disturb, now, the process that terminal carries out reducing noise is exactly useless.In order to reduce terminal system resource
Waste so that the process that terminal carries out reducing noise every time is all that user is required, in the present embodiment,
Terminal just obtains the noise letter of terminal local environment in the case that user needs to reduce environmental noise interference
Number, thus carrying out reducing the process of noise.Consider to carry out conversing in user's using terminal, to listen music
Or see that video etc. needs generally all to wear earphone, therefore, in this enforcement when reducing environmental noise interference
In example, terminal has first detected whether that audio-frequence player device is connected with terminal, and described audio-frequence player device is
Refer to the audio frequency apparatus with audio playing function, including wired earphone, wireless headset etc..Preferably, first
Whether the audio interface of first detection terminal is connected to wired earphone, does not connect in audio interface terminal is detected
When connecing wired earphone, whether further detection terminal is by the modes such as bluetooth and the wireless headsets such as bluetooth earphone
Connect.It will be appreciated by persons skilled in the art that whether the side such as bluetooth can also be passed through first detection terminal
Formula is connected with wireless headsets such as bluetooth earphones, when terminal is not connected with wireless headset, detects further eventually
Whether the audio interface at end connects wired earphone.
When terminal is detected and being connected with audio-frequence player device, namely the audio interface of terminal is detected and connect
Wired earphone, or when terminal is detected and being connected by modes such as bluetooths with wireless headsets such as bluetooth earphones,
Terminal is passed through built-in sound collector and is gathered environmental noise, obtains environmental noise signal.It is being not detected by
When terminal is connected with audio-frequence player device, then do not processed.
The scheme that the present embodiment provides, whether detection terminal first is connected with audio-frequence player device, only exists
When terminal is connected with audio-frequence player device, namely when user needs the interference reducing environmental noise, just obtain
Take the noise signal of terminal local environment, carry out reducing the process of noise；Do not play with audio frequency in terminal and set
During standby connection, namely when user does not need the interference reducing environmental noise, do not carry out noise reduction process, from
And reduce the waste of terminal system resource.
Further, the method fourth embodiment of noise treatment of the present invention is proposed based on any of the above-described embodiment,
In the present embodiment, described step S30 includes：
Step b, carries out anti-phase process using negative circuit to the environmental noise signal after processing.
In the present embodiment, an anti-phase process circuit can be pre-set in terminal, when making an uproar to described environment
Environment after message number carries out phase offset process, after phase offset being processed by this anti-phase process circuit
Noise signal carries out anti-phase process, obtains the sound contrary with the environmental noise signal phase that user's human ear is heard
Frequency analogue signal.Preferably it is also possible to be previously provided with A/D change-over circuit (analog in terminal
Digital converter, analog-digital converter), negate circuit and D/A change-over circuit (digital to analog
Converter, digital to analog converter).When the described environmental noise signal that terminal-pair obtains is carried out at phase offset
After reason, first pass through the environmental noise signal after described phase offset is processed by A/D change-over circuit and be converted to
Then described digital signal is carried out negating process by the described circuit that negates, acquisition negates by digital signal
Digital signal after process, then by D/A change-over circuit, the described digital signal negating after process is changed
For analogue signal, then described analogue signal is the audio analog signals contrary with environmental noise signal phase.
Further, in the present embodiment, described step S40 includes：
Step c, described audio analog signals are amplified processing；
Step d, the described audio analog signals after output is amplified are set to the audio frequency broadcasting being connected with described terminal
Standby.
After obtaining the audio frequency simulation letter contrary with environmental noise signal phase, by described audio analog signals
It is amplified processing.For example, by signal amplification circuit, described audio analog signals can be amplified locating
Reason, it will be appreciated by persons skilled in the art that can also be realized by other modes such as software approachs right
The processing and amplifying of described audio analog signals.Then, output amplify after described audio analog signals to
The audio-frequence player device that described terminal connects, the described sound after the amplification that will be exported by audio-frequence player device
Frequency analogue signal is transmitted to user's human ear.After user hears amplification by described audio-frequence player device
Described audio analog signals, and when hearing the environmental noise signal in user's local environment, by institute
State the opposite in phase of audio analog signals and environmental noise signal, cancel out each other after two Signal averaging, from
And reduce the interference that environmental noise causes to user.
The scheme that the present embodiment provides, when getting the environmental noise signal after phase offset is processed, leads to
Cross and anti-phase process is carried out to the environmental noise signal after phase offset process using negative circuit, thus obtaining
The audio analog signals contrary with environmental noise signal phase, then will be defeated after the amplification of this audio analog signals
Go out to audio-frequence player device, when user hears described audio analog signals and environmental noise signal, ring
Border noise signal is cancelled out each other after being superimposed with the described audio analog signals of opposite in phase, it is achieved thereby that logical
Cross terminal-pair environmental noise and carry out noise reduction process, reduce the interference that environmental noise causes to user.
The present invention further provides a kind of device of noise treatment, as shown in figure 3, as 3 make an uproar for the present invention
The high-level schematic functional block diagram of the device first embodiment that sound is processed.
In the present embodiment, the device of this noise treatment includes：
First acquisition module 10, for obtaining the noise signal of terminal local environment；
With the raising of scientific and technological development and people's quality of the life, mobile phone, pad (panel computer) etc. are eventually
End has become as user communication, the carry-on necessary article of amusement, and in daily life, user can commonly used terminal
Carry out conversing, listen music or see video etc..When the surrounding of user has noise, for example, if
User AT STATION, market, the public place such as Waiting Lounge when, there is various noises, Yong Huxi in surrounding
Prestige can reduce the interference that environmental noise brings.In order to solve this problem, a kind of dress of noise treatment is proposed
Put, the device of described noise treatment is arranged in the terminal.In the present embodiment, first pass through described noise
First acquisition module 10 of the device processing obtains the noise signal of terminal local environment.Preferably, at this
In embodiment, in terminal, it is previously provided with sound collector, the first acquisition module 10 passes through sound collector
Collection environmental noise obtains environmental noise signal.Wherein, described environmental noise refers to that user's human ear can be heard
Environment in medium and low frequency noise, such as noise in the range of 100-1000HZ for the frequency.
First phase processing module 20, for according to the phase offset parameter prestoring, to the described ring obtaining
Border noise signal carries out phase offset process；
Due to there is a certain distance between terminal and user's human ear, environmental noise is sent to the time of terminal
Poor with the time existence time being sent to user's human ear, thus the environment that the first acquisition module 10 gets is made an uproar
Can there is phase contrast between the environmental noise signal that message number and human ear are heard.In the present embodiment, in order to
Solve the environmental noise signal that the environmental noise signal that the first acquisition module 10 gets is heard with user's human ear
Between exist phase contrast problem, after the first acquisition module 10 gets environmental noise signal, the first phase
Position processing module 20, according to the phase offset parameter prestoring, carries out phase to the described environmental noise signal obtaining
Position migration processing, obtains the environmental noise signal after phase offset is processed, after described phase offset is processed
Environmental noise signal is consistent with the signal waveform of the environmental noise signal that user's human ear is heard.
Second phase processing module 30, for the environmental noise signal after processing is carried out anti-phase process, with
Obtain the audio analog signals contrary with environmental noise signal phase；
After first phase processing module 20 obtains the environmental noise signal after phase offset is processed, second
Environmental noise signal after the process of described phase offset is carried out reverse-phase process by phase processing module 30,
Thus obtaining the contrary audio analog signals of the environmental noise signal phase after processing with phase offset, namely
Obtain the audio analog signals contrary with the environmental noise signal phase that user's human ear is heard.Art technology
Personnel are it is understood that first phase processing module 20 can be by using hardware circuits pair such as phase inverters
Environmental noise signal after described phase offset is processed carries out anti-phase process, can also be by way of software
To realize the anti-phase process of the environmental noise signal after described phase offset is processed, to obtain and listen with user's human ear
The contrary audio analog signals of the environmental noise signal phase that arrives.
Output module 40, is play to the audio frequency being connected with described terminal for exporting described audio analog signals
Equipment.
When the environmental noise signal phase phase heard with user's human ear by second phase processing module 30 acquisition
After anti-audio analog signals, output module 40 is exported described audio analog signals and is extremely connected with described terminal
Audio-frequence player device, described audio analog signals output module 40 being exported by audio-frequence player device
Transmit to user's human ear.Described audio-frequence player device refers to the audio frequency apparatus with audio playing function, bag
Include wired earphone, wireless headset etc..When user is hearing residing for described audio analog signals and user
During environmental noise signal in environment, due to the phase place phase of described audio analog signals and environmental noise signal
Instead, after described audio analog signals and environmental noise Signal averaging, two signals are cancelled out each other, thus dropping
The interference that low environmental noise causes to user.
The scheme that the present embodiment provides, when user needs the interference reducing environmental noise, the first acquisition mould
Block 10 obtains the noise signal of terminal local environment first, and first phase processing module 20 is according to prestoring
Phase offset parameter, carries out phase offset process to the environmental noise signal getting so that phase offset
Environmental noise signal after process is consistent with the waveform of the environmental noise signal that user's human ear is heard, Ran Hou
Two phase processing module 30 carries out anti-phase process to the environmental noise signal after phase offset process, obtain with
The contrary audio analog signals of environmental noise signal phase that user's human ear is heard, last output module 40 is defeated
Go out described audio analog signals to the audio-frequence player device being connected with described terminal, user hears described sound
When frequency analogue signal and environmental noise signal, the described audio frequency simulation of environmental noise signal and opposite in phase
Cancel out each other after Signal averaging, it is achieved thereby that noise reduction process is carried out by terminal-pair environmental noise, reduce
The interference that environmental noise causes to user.
Further, as shown in figure 4, propose the device the of noise treatment of the present invention based on first embodiment
Two embodiments, in the present embodiment, the device of described noise treatment also includes：
Second acquisition module 50, for when receiving phase adjusted instruction, obtaining described phase adjusted and referring to
Make corresponding phase offset parameter；
Update module 60, for updating, using described phase offset parameter, the described phase offset parameter prestoring.
The noise reduction carrying out reducing noise treatment in above-described embodiment is fixing, but sometimes user wishes
Hope that terminal can reach different noise reductions in different situations.Therefore, in order to improve user and end
The interactivity at end, make user can also manually control terminal noise reduction, in the present embodiment,
Terminal is previously provided with a noise reduction audio and adjusts icon.Preferably, described noise reduction audio adjusts icon is one
Horizontally disposed strip icon, described noise reduction audio adjusts and arranges a scroll bar on icon, pre-sets
Described scroll bar each horizontal level on strip icon corresponds to a phase offset parameter value.For example, in advance
First setting scroll bar is 0 in the centre horizontal level corresponding phase offset parameter value of strip icon.When
User in order to obtain different noise reductions, user slide to the left or to the right described scroll bar enter line phase adjust
Section operation, the phase adjusted that the second acquisition module 50 receives user input operates corresponding phase adjusted to refer to
Order, when the second acquisition module 50 receives described phase adjusted instruction, obtains scroll bar current location pair
The phase offset parameter value answered.
After the second acquisition module 50 gets described corresponding phase offset parameter value, update module 60
The phase offset parameter value prestoring is updated using described phase offset parameter value.Then, first phase is processed
Module 20 is entered to described environmental noise signal according to the described phase offset parameter value that update module 60 updates
Line phase migration processing.Second phase processing module 30 again phase offset is processed after environmental noise signal
Carry out reverse-phase process, obtain the audio frequency mould contrary with the environmental noise signal phase that user's human ear is heard
Intend signal, last output module 40 exports described audio analog signals, and user hears described audio frequency simulation
When signal and environmental noise signal, environmental noise signal is folded with the described audio analog signals of opposite in phase
Plus after cancel out each other, it is achieved thereby that noise reduction process is carried out to environmental noise.Described scroll bar is slided by user
When moving different positions, the second acquisition module 50 gets accordingly different phase offset parameter values, from
And first phase processing module 20 carries out different phase offset and processes, finally realize different noise reductions.
Therefore, user can adjust the noise reduction of terminal by the described scroll bar that slides, until user's sensation
Till the environmental noise heard is the weakest.
The scheme that the present embodiment provides, when the second acquisition module 50 is receiving the phase adjusted of user input
During instruction, obtain described phase adjusted and instruct corresponding phase offset parameter value, then update module 60 is adopted
Update the phase offset parameter value prestoring, first phase processing module 20 with described phase offset parameter value
According to the described phase offset parameter value updating, phase offset process is carried out to the environmental noise signal obtaining, the
Environmental noise signal after phase offset is processed by two phase processing module 30 again carries out reverse-phase process,
Obtain the audio analog signals contrary with the environmental noise signal phase that user's human ear is heard, finally export mould
Block 40 exports described audio analog signals, and user hears described audio analog signals and environmental noise letter
Number when, environmental noise signal is cancelled out each other after being superimposed with the described audio analog signals of opposite in phase, thus
Achieve and noise reduction process is carried out to environmental noise.When user carries out different phase adjusted operations in terminal
When, due to getting the different phase offset parameter values of correspondence it is achieved that different noise reduction, therefore,
Different noise reductions can be reached according to demand by this programme user, improve Consumer's Experience.
Further, the device the of noise treatment of the present invention is proposed based on first embodiment or second embodiment
Three embodiments, in the present embodiment, described first acquisition module 10 is used for：
When described terminal is connected, obtain the noise signal of terminal local environment with audio-frequence player device.
In the above-described embodiments, when getting environmental noise, will carry out reducing the process of noise, eventually
End system resource consumption is big.And, in some cases user also without reduce environmental noise interference,
Now, the process that the device of noise treatment carries out reducing noise is exactly useless.In order to reduce terminal system
The waste of resource is so that the process carrying out reducing noise every time is all that user is required, in the present embodiment
In, the device of noise treatment just obtains residing for terminal in the case that user needs to reduce environmental noise interference
The noise signal of environment, thus carry out reducing the process of noise.Consider to carry out in user's using terminal
Converse, listen music or see that video etc. needs generally all to wear earphone when reducing environmental noise interference, because
This, in the present embodiment, the first acquisition module 10 has first detected whether audio-frequence player device with terminal even
Connect, described audio-frequence player device refers to the audio frequency apparatus with audio playing function, including wired earphone,
Wireless headset etc..Preferably, whether the audio interface of the first acquisition module 10 detection terminal first is connected to
Wired earphone, when audio interface terminal is detected is not connected with wired earphone, further detection terminal is
No it is connected with wireless headsets such as bluetooth earphones by modes such as bluetooths.It will be appreciated by those skilled in the art that
Be, the first acquisition module 10 can also first detection terminal whether by the modes such as bluetooth and bluetooth earphone etc. no
Line earphone connects, and when terminal is not connected with wireless headset, whether the audio interface of further detection terminal
Connect wired earphone.
When the first acquisition module 10 is detected terminal and is connected with audio-frequence player device, namely terminal is detected
Audio interface be connected to wired earphone, or the wireless headsets such as terminal and bluetooth earphone is detected and pass through indigo plant
When the modes such as tooth connect, the first acquisition module 10 passes through built-in sound collector and gathers environmental noise acquisition
Environmental noise signal.When the first acquisition module 10 is not detected by terminal and is connected with audio-frequence player device, then
Do not processed.
The scheme that the present embodiment provides, whether the first acquisition module 10 detection terminal first is play with audio frequency sets
Standby connection, only when terminal is connected with audio-frequence player device, namely needs to reduce environmental noise in user
Interference when, the first acquisition module 10 just obtains the noise signal of terminal local environment, and then is reduced
The process of noise；When terminal is not connected with audio-frequence player device, namely do not need to reduce environment in user
During the interference of noise, do not carry out noise reduction process, thus reducing the waste of terminal system resource.
Further, the device fourth embodiment of noise treatment of the present invention is proposed based on any of the above-described embodiment,
In the present embodiment, described second phase processing module 30 is used for：
Anti-phase process is carried out to the environmental noise signal after processing using negative circuit.
In the present embodiment, an anti-phase process circuit can be pre-set in terminal, when first phase is processed
Module 20 carries out after phase offset process to described environmental noise signal, and second phase processing module 30 is led to
Cross the environmental noise signal after phase offset is processed by this anti-phase process circuit and carry out anti-phase process, obtain with
The contrary audio analog signals of environmental noise signal phase that user's human ear is heard.Preferably it is also possible to
Be previously provided with terminal A/D change-over circuit (analog to digital converter, analog-digital converter),
Negate circuit and D/A change-over circuit (digital to analog converter, digital to analog converter).When
One phase processing module 20 carries out after phase offset process to the described environmental noise signal obtaining, the second phase
Position processing module 30 first passes through the environmental noise signal after described phase offset is processed by A/D change-over circuit
Be converted to digital signal, then carry out negating process by described digital signal by the described circuit that negates, obtain
The digital signal after process must be negated, then by D/A change-over circuit, the described numeral negating after process is believed
Number be converted to analogue signal, described analogue signal is as the audio frequency mould contrary with environmental noise signal phase
Intend signal.
Further, with reference to Fig. 5, in the present embodiment, described output module 40 includes：
Amplifying unit 41, for being amplified processing by described audio analog signals；
Output unit 42, the described audio analog signals after amplifying for output are extremely connected with described terminal
Audio-frequence player device.
Obtaining after the audio frequency simulation contrary with environmental noise signal phase believe, amplifying unit 41 is by described sound
Frequency analogue signal is amplified processing.For example, described amplifying unit 41 is preferably signal amplification circuit, leads to
Cross described signal amplification circuit to be amplified processing by described audio analog signals.Then, output unit 42
The audio-frequence player device that described audio analog signals after output amplification are extremely connected with described terminal, by sound
Described audio analog signals after the amplification that output unit 42 is exported by frequency playback equipment transmit to user people
Ear.Described audio analog signals after user hears amplification by described audio-frequence player device, and
When hearing the environmental noise signal in user's local environment, because described audio analog signals and environment are made an uproar
The opposite in phase of message number, cancels out each other after two Signal averaging, thus reducing environmental noise to user
The interference causing.
The scheme that the present embodiment provides, when getting the environmental noise signal after phase offset is processed, the
Two phase processing module 30 is by being carried out to the environmental noise signal after phase offset process using negative circuit
Anti-phase process, thus obtaining the audio analog signals contrary with environmental noise signal phase, then amplifies single
Unit 41 is exported to audio-frequence player device, user by output unit 42 after amplifying this audio analog signals
When hearing described audio analog signals and environmental noise signal, environmental noise signal and opposite in phase
Cancel out each other, it is achieved thereby that being dropped by terminal-pair environmental noise after described audio analog signals superposition
Make an uproar process, reduce the interference that environmental noise causes to user.
These are only the preferred embodiments of the present invention, not thereby limit the scope of the claims of the present invention, every
The equivalent structure made using description of the invention and accompanying drawing content or equivalent flow conversion, or directly or
Connect and be used in other related technical fields, be included within the scope of the present invention.
Claims (10)
1. a kind of method of noise treatment is it is characterised in that the method for described noise treatment includes following step
Suddenly：
Obtain the noise signal of terminal local environment；
According to the phase offset parameter prestoring, the described environmental noise signal obtaining is carried out at phase offset
Reason；
Environmental noise signal after processing is carried out anti-phase process, to obtain and environmental noise signal phase phase
Anti- audio analog signals；
Export described audio analog signals to the audio-frequence player device being connected with described terminal.
2. the method for noise treatment as claimed in claim 1 is it is characterised in that the described sound of described output
Frequency analogue signal, to after the step of audio-frequence player device being connected with described terminal, is also included：
When receiving phase adjusted instruction, obtain described phase adjusted and instruct corresponding phase offset parameter；
The described phase offset parameter prestoring is updated using described phase offset parameter.
3. the method for noise treatment as claimed in claim 1 is it is characterised in that described acquisition terminal institute
The step of the noise signal of place's environment includes：
When described terminal is connected with audio-frequence player device, the described noise obtaining terminal local environment of execution
The step of signal.
4. noise treatment as claimed in claim 1 method it is characterised in that described will process after
The step that environmental noise signal carries out anti-phase process includes：
Anti-phase process is carried out to the environmental noise signal after processing using negative circuit.
5. the method for the noise treatment as described in any one of claim 1-4 is it is characterised in that described defeated
The step going out described audio analog signals to the audio-frequence player device being connected with described terminal is included：
Described audio analog signals are amplified processing；
Described audio analog signals after output amplification are to the audio-frequence player device being connected with described terminal.
6. a kind of device of noise treatment is it is characterised in that the device of described noise treatment includes：
First acquisition module, for obtaining the noise signal of terminal local environment；
First phase processing module, for according to the phase offset parameter prestoring, to the described environment obtaining
Noise signal carries out phase offset process；
Second phase processing module, for the environmental noise signal after processing is carried out anti-phase process, to obtain
Obtain the audio analog signals contrary with environmental noise signal phase；
Output module, is set to the audio frequency broadcasting being connected with described terminal for exporting described audio analog signals
Standby.
7. the device of noise treatment as claimed in claim 6 is it is characterised in that described noise treatment
Device also includes：
Second acquisition module, for when receiving phase adjusted instruction, obtaining described phase adjusted instruction
Corresponding phase offset parameter；
Update module, for updating, using described phase offset parameter, the described phase offset parameter prestoring.
8. the device of noise treatment as claimed in claim 6 is it is characterised in that described first obtains mould
Block is used for：
When described terminal is connected, obtain the noise signal of terminal local environment with audio-frequence player device.
9. the device of noise treatment as claimed in claim 6 is it is characterised in that at described second phase
Reason module is used for：
Anti-phase process is carried out to the environmental noise signal after processing using negative circuit.
10. the device of the noise treatment as described in any one of claim 6-9 is it is characterised in that described defeated
Go out module to include：
Amplifying unit, for being amplified processing by described audio analog signals；
Output unit, the described audio analog signals after amplifying for output are to the sound being connected with described terminal
Frequency playback equipment.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510481905.XA CN106409279A (en) | 2015-08-03 | 2015-08-03 | Noise processing method and apparatus thereof |
| PCT/CN2016/077737 WO2016177204A1 (en) | 2015-08-03 | 2016-03-29 | Noise processing method and apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510481905.XA CN106409279A (en) | 2015-08-03 | 2015-08-03 | Noise processing method and apparatus thereof |
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| WO (1) | WO2016177204A1 (en) |
Cited By (2)
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| CN108806659A (en) * | 2017-04-27 | 2018-11-13 | 北京小米移动软件有限公司 | Noise-reduction method and device, the electronic equipment of air purifier |
| CN109243453A (en) * | 2018-10-29 | 2019-01-18 | 珠海格力电器股份有限公司 | The processing method and processing device of voice messaging, storage medium, electronic device |
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| CN107452368B (en) * | 2017-08-14 | 2021-05-07 | 海尔优家智能科技（北京）有限公司 | Noise reduction method and device for household appliance |
| CN113613145B (en) * | 2021-08-09 | 2023-03-03 | 深圳分贝声学科技有限公司 | Noise reduction processing method and related device |
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| WO2016177204A1 (en) | 2016-11-10 |
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