CN110033754A - A kind of noise-reduction method, device, terminal device and computer readable storage medium - Google Patents
A kind of noise-reduction method, device, terminal device and computer readable storage medium Download PDFInfo
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- CN110033754A CN110033754A CN201810027179.8A CN201810027179A CN110033754A CN 110033754 A CN110033754 A CN 110033754A CN 201810027179 A CN201810027179 A CN 201810027179A CN 110033754 A CN110033754 A CN 110033754A
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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
- G10K11/1781—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 characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions
- G10K11/17821—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 characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions characterised by the analysis of the input signals only
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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
- G10K11/17875—General system configurations using an error signal without a reference signal, e.g. pure feedback
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- Acoustics & Sound (AREA)
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- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The invention belongs to signal processing technology field more particularly to a kind of noise-reduction method, device, terminal device and computer readable storage mediums.The method obtains the environmental noise signal that target terminal is currently located region, calculate the frequency and phase of the environmental noise signal, then inhibition signal identical as the environmental noise signal frequency, opposite in phase is generated, the inhibition signal is transmitted in preset speaker, the speaker is controlled and plays the inhibition signal.Since inhibition signal is identical as the environmental noise signal frequency, opposite in phase, it can cancel out each other after the two superposition, to build more quiet indoor environment, be conducive to the physical and mental health of resident.
Description
Technical field
The invention belongs to signal processing technology field more particularly to a kind of noise-reduction method, device, terminal device and computers
Readable storage medium storing program for executing.
Background technique
Urban modernization brings convenient and enjoys to town dweller, but incident noise pollution, and gives resident
Bring trouble and injury.Although the ordinary residence level of noise in national clear stipulaties city, must not exceed 55dB daytime, night is not
It obtains more than 45dB, but the noise jamming of the residential building of downtown area and busy road both sides is but often more than this regulation
Index is chronically under this noisy environment, can seriously affect the physical and mental health of resident.
Summary of the invention
In view of this, the embodiment of the invention provides a kind of noise-reduction method, device and terminal device, to solve noise circumstance
Influence the physically and mentally healthy problem of resident.
The first aspect of the embodiment of the present invention provides a kind of noise-reduction method, may include:
Obtain the environmental noise signal that target terminal is currently located region；
Calculate the frequency and phase of the environmental noise signal, then generate it is identical as the environmental noise signal frequency,
The inhibition signal of opposite in phase；
The inhibition signal is transmitted in preset speaker；
It controls the speaker and plays the inhibition signal.
Further, after controlling the speaker and playing the inhibition signal, the noise-reduction method can also include:
The superposed signal that the target terminal is currently located region is obtained, the superposed signal is the environmental noise signal
The signal obtained with the inhibition Signal averaging；
Calculate the intensity of the superposed signal；
If the intensity of the superposed signal is greater than preset intensity threshold, controls the speaker and adjust broadcast sound volume, directly
Until the intensity of the superposed signal is less than or equal to the intensity threshold.
Further, before controlling the speaker and playing the inhibition signal, the noise-reduction method can also include:
Obtain the position of the target terminal；
The propagation side for inhibiting signal is determined according to the position of the position of the target terminal and the preset speaker
To；
The outbound course for controlling the speaker adjustment audio signal, so that the outbound course of the audio signal and the suppression
The direction of propagation of signal processed is consistent.
Further, before controlling the speaker and playing the inhibition signal, the noise-reduction method can also include:
Obtain the position of the target terminal；
Calculate the position of the target terminal and the distance between the position of the preset speaker；
Calculate the intensity of the environmental noise signal；
According to the distance between the position of the target terminal and the position of the speaker and the environmental noise signal
Strength co-mputation described in speaker initial play volume.
Further, the noise-reduction method can also include:
If the region that is currently located of the target terminal is changed, the target terminal region after change is obtained
Environmental noise signal, then return to the step of executing the frequency and phase for calculating the environmental noise signal.
The second aspect of the embodiment of the present invention provides a kind of denoising device, may include:
Noise signal obtains module, the environmental noise signal for being currently located region for obtaining target terminal；
Inhibit signal generation module, for calculating the frequency and phase of the environmental noise signal, then generate with it is described
Environmental noise signal frequency is identical, opposite in phase inhibition signal；
Inhibit signal transmission module, for the inhibition signal to be transmitted in preset speaker；
Playing control module plays the inhibition signal for controlling the speaker.
Further, the denoising device can also include:
Superposed signal obtains module, the superposed signal for being currently located region for obtaining the target terminal, the superposition
Signal is the signal that the environmental noise signal and the inhibition Signal averaging obtain；
Superposed signal Strength co-mputation module, for calculating the intensity of the superposed signal；
Broadcast sound volume adjustment module controls institute if the intensity for the superposed signal is greater than preset intensity threshold
It states speaker and adjusts broadcast sound volume.
Further, the denoising device can also include:
Terminal location obtains module, for obtaining the position of the target terminal；
Direction of propagation determining module, for being determined according to the position of the target terminal and the position of the preset speaker
The direction of propagation for inhibiting signal；
Outbound course control module, for controlling the outbound course of the speaker adjustment audio signal, so that the audio
The outbound course of signal is consistent with the inhibition direction of propagation of signal.
Further, the denoising device can also include:
Distance calculation module, for calculate between the position of the target terminal and the position of the preset speaker away from
From；
Noise signal intensity computing module, for calculating the intensity of the environmental noise signal；
Initial volume computing module, for according between the position of the target terminal and the position of the speaker away from
From and the Strength co-mputation of the environmental noise signal described in speaker initial play volume.
The third aspect of the embodiment of the present invention provides a kind of noise reduction terminal device, including memory, processor and deposits
Store up the computer program that can be run in the memory and on the processor, which is characterized in that the processor executes
The step of any of the above noise-reduction method is realized when the computer program.
The fourth aspect of the embodiment of the present invention provides a kind of computer readable storage medium, the computer-readable storage
Media storage has computer program, which is characterized in that any of the above drop is realized when the computer program is executed by processor
The step of method for de-noising.
Existing beneficial effect is the embodiment of the present invention compared with prior art: the embodiment of the present invention obtains target terminal and works as
The environmental noise signal of preceding region calculates the frequency and phase of the environmental noise signal, then generates and the environment
Noise signal frequency is identical, opposite in phase inhibition signal, the inhibition signal is transmitted in preset speaker, described in control
Speaker plays the inhibition signal.Since inhibition signal is identical as the environmental noise signal frequency, opposite in phase, the two superposition
It can cancel out each other later, to build more quiet indoor environment, be conducive to the physical and mental health of resident.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only of the invention some
Embodiment for those of ordinary skill in the art without any creative labor, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is a kind of schematic flow diagram of noise-reduction method provided in an embodiment of the present invention；
Fig. 2 is the schematic flow diagram that the outbound course of audio signal is adjusted in the embodiment of the present invention；
Fig. 3 is the schematic flow diagram that the initial play volume of speaker is adjusted in the embodiment of the present invention；
Fig. 4 is a kind of exemplary flow to the noise-reduction method for inhibiting signal to carry out dynamic adjustment provided in an embodiment of the present invention
Figure；
Fig. 5 is the schematic block diagram of denoising device provided in an embodiment of the present invention；
Fig. 6 is the schematic block diagram of noise reduction terminal device provided in an embodiment of the present invention.
Specific embodiment
In order to make the invention's purpose, features and advantages of the invention more obvious and easy to understand, below in conjunction with the present invention
Attached drawing in embodiment, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that disclosed below
Embodiment be only a part of the embodiment of the present invention, and not all embodiment.Based on the embodiments of the present invention, this field
Those of ordinary skill's all other embodiment obtained without making creative work, belongs to protection of the present invention
Range.
As shown in Figure 1, being a kind of schematic flow diagram of noise-reduction method provided in an embodiment of the present invention, the method be can wrap
It includes:
Step S101, the environmental noise signal that target terminal is currently located region is obtained.
The target terminal for a user usually can carry its portable mobile phone for mobile phone, therefore, target
Terminal is currently located the environmental noise signal in region also and is the environmental noise signal that user is currently located region.In the present embodiment
In, the environmental noise information can be obtained by the microphone built in target terminal.
Step S102, the frequency and phase of the environmental noise signal are calculated, is then generated and the environmental noise signal
Frequency is identical, opposite in phase inhibition signal.
Environmental noise signal can be sent to DNC (the Digital Noise of the extremely low delay of target terminal first
Cancelling) circuit carries out real-time operation, calculates the frequency and phase of the environmental noise signal, then pass through target again
Terminal D AC (Digital to Analog Converter) unit generates identical as environmental noise signal frequency, opposite in phase
Inhibit signal.
Step S103, the inhibition signal is transmitted in preset speaker.
It can be pre-established by the modes such as bluetooth, WIFI, ZigBee between target terminal and speaker in the present embodiment
The inhibition signal is transmitted in speaker by communication connection, target terminal by the communication connection in time after generating inhibition signal.
Step S104, it controls the speaker and plays the inhibition signal.
When the inhibition signal propagates to user and is currently located region, Signal averaging is generated with environmental noise signal, due to suppression
Signal processed is identical as environmental noise signal frequency, opposite in phase, can cancel out each other after the two superposition, for user perspective,
It can be clearly felt that the reduction of periphery noise.
In conclusion this programme embodiment, which obtains target terminal, is currently located the environmental noise signal in region, described in calculating
Then the frequency and phase of environmental noise signal generate inhibition letter identical as the environmental noise signal frequency, opposite in phase
Number, the inhibition signal is transmitted in preset speaker, the speaker is controlled and plays the inhibition signal.Due to inhibiting signal
, opposite in phase identical as the environmental noise signal frequency can cancel out each other after the two superposition, more pacify to build
Quiet indoor environment is conducive to the physical and mental health of resident.
Preferably, in order to which significantly more efficient inhibition noise may be used also before controlling the speaker and playing the inhibition signal
To control the outbound course and initial play volume that the speaker adjusts audio signal in advance, realize more smart to environmental noise signal
Quasi- inhibition.
Wherein, the process for adjusting the outbound course of audio signal may include step as shown in Figure 2:
Step S201, the position of the target terminal is obtained.
It is currently located by the way that the GPS built in target terminal is available to the specific location of the target terminal namely user
Specific location.
Step S202, the inhibition signal is determined according to the position of the position of the target terminal and the preset speaker
The direction of propagation.
The position of speaker is usually fixation, and target terminal can in advance store its position, for example, can be first
Target terminal is placed in the position where speaker, then the position that the GPS of target terminal is recorded at this time is the position of speaker
It sets, target terminal stores the position, in case subsequent use.In speaker can also built-in GPS, accordingly even when its position is sent out
Changing, target terminal can also obtain its position at any time.In the case where the position of known target terminal and speaker, from the sound
The direction of the position of case to the position of the target terminal is the direction of propagation for inhibiting signal.
Step S203, the outbound course for controlling the speaker adjustment audio signal, so that the output side of the audio signal
To consistent with the inhibition direction of propagation of signal.
In one kind in the specific implementation, the speaker can be omnidirectional's speaker, audio can be independently carried out in all directions
The output of signal only carries out the output of audio signal after defining the direction of propagation for inhibiting signal in this direction.
In another kind in the specific implementation, the speaker can be the rotatable unidirectional speaker of pedestal, by the rotation of pedestal come
Adjust the outbound course of audio signal.
By process shown in Fig. 2, signal can will be inhibited to be sent directly to user position, reach better noise
Inhibitory effect.
Further, the process for adjusting the initial play volume of speaker may include step as shown in Figure 3:
Step S301, the position of the target terminal is obtained.
Step S302, the position of the target terminal and the distance between the position of the preset speaker are calculated.
If the position coordinates of target terminal are (x1,y1), the position coordinates of speaker are (x2,y2), then distance between the two
D can be calculate by the following formula:
Step S303, the intensity of the environmental noise signal is calculated.
In the present embodiment, environmental noise signal can be sent to the DNC circuit of the extremely low delay of target terminal, carried out real
When operation, calculate the intensity of the environmental noise signal.
Step S304, according to the distance between the position of the target terminal and the position of the speaker and the ring
The initial play volume of speaker described in the Strength co-mputation of border noise signal.
Inhibit signal that can decay during propagation, and distance is remoter, decays bigger, if speaker with environment to make an uproar
The identical intensity of sound signal, which plays, inhibits signal that can not make an uproar completely with environment then after overdamping in the position where user
Sound signal is offset, therefore, it is necessary to estimate in advance attenuation, play inhibit signal when, using attenuation to its into
Row compensation.
The initial play volume Vol of speaker can be calculate by the following formula:
Vol=Noise+20lgd+k
Wherein, Noise indicates the intensity of environmental noise signal, and k indicates correction factor, can use k=11 herein.
By process shown in Fig. 3, decaying of the signal in communication process can be inhibited with effective compensation, when inhibition signal arrives
When up to user position, signal strength is substantially suitable with the intensity of environmental noise signal, has reached better noise suppression
Effect.
Since the environment of sound transmission is sufficiently complex, initial inhibition signal is possibly can not be fully by environmental noise signal
Inhibit, in order to reach more effective noise rejection effect, the present embodiment joined on the basis of a upper embodiment believes inhibition
Number carry out dynamic adjustment process, specifically, as shown in figure 4, the present embodiment may comprise steps of:
Step S401, the environmental noise signal that target terminal is currently located region is obtained.
Step S402, the frequency and phase of the environmental noise signal are calculated, is then generated and the environmental noise signal
Frequency is identical, opposite in phase inhibition signal.
Step S403, the inhibition signal is transmitted in preset speaker.
Step S404, it controls the speaker and plays the inhibition signal.
Wherein, step S101~step S104 process in step S401~step S404 process and a upper embodiment
It is identical, it specifically can refer to the description in an embodiment, details are not described herein for the present embodiment.
Step S405, the superposed signal that the target terminal is currently located region is obtained.
The superposed signal is the signal that the environmental noise signal and the inhibition Signal averaging obtain, namely by suppression
Environmental noise signal after system can obtain the superposed signal in the present embodiment by the microphone built in target terminal.
Step S406, the intensity of the superposed signal is calculated.
In the present embodiment, superposed signal can be sent to the DNC circuit of the extremely low delay of target terminal, transported in real time
It calculates, calculates the intensity of the environmental noise signal.
Step S407, judge whether the intensity of the superposed signal is greater than preset intensity threshold.
The intensity threshold is the acceptable maximum noise intensity of user, can be pre- according to the actual conditions of oneself by user
First it is arranged.
If the intensity of the superposed signal is greater than the intensity threshold, illustrate that the effect of current noise suppression is also paid no attention to
Think, need further to be adjusted, execute step S408 at this time, if the intensity of the superposed signal is strong less than or equal to described
Threshold value is spent, then illustrates that the effect of current noise suppression has had reached the demand of user, no longer needs to be adjusted, execute step at this time
S409。
Step S408, it controls the speaker and adjusts broadcast sound volume.
After adjusting broadcast sound volume, S405 and its subsequent step are returned to step, until the superposed signal is strong
Until degree is less than or equal to the intensity threshold.
In a kind of concrete implementation mode, broadcast sound volume first can be incrementally increased according to preset adjusting step-length, if
During adjusting, the intensity of superposed signal is gradually become smaller, then illustrates that adjusting direction at this time is correctly that original state is broadcast
Playback amount is less than normal, at this point, the intensity of superposed signal is gradually reduced by constantly increasing broadcast sound volume, until it is less than
Or until being equal to the intensity threshold.But if during adjusting, not only the intensity of superposed signal does not become smaller, instead
Become larger, then the adjusting direction for illustrating at this time be it is wrong, the broadcast sound volume of original state is bigger than normal, at this point it is possible to logical
It crosses and is steadily decreasing broadcast sound volume, gradually reduce the intensity of superposed signal, until it is less than or equal to the intensity threshold.
In another concrete implementation mode, broadcast sound volume first can be gradually reduced according to preset adjusting step-length, if
During adjusting, the intensity of superposed signal is gradually become smaller, then the adjusting direction for illustrating at this time be correctly, original state
Broadcast sound volume is bigger than normal, at this point, the intensity of superposed signal is gradually reduced by being steadily decreasing broadcast sound volume, until its is small
In or be equal to the intensity threshold until.But if during adjusting, not only the intensity of superposed signal does not become smaller, instead
And become larger, then the adjusting direction for illustrating at this time be it is wrong, the broadcast sound volume of original state is less than normal, at this point it is possible to
By constantly increasing broadcast sound volume, the intensity of superposed signal is gradually reduced, until it is less than or equal to the intensity threshold
Only.
Step S409, it controls the speaker and maintains broadcast sound volume.
When the effect of noise suppression has reached the demand of user, then broadcast sound volume at this time can be maintained, noise is pressed down
The effect of system is kept.
It should be noted that the present embodiment is the process that constantly dynamic adjusts, if target terminal is currently located
Region is changed, for example, user is moved to another position from a position, then needs to reacquire the mesh after change
Mark terminal region environmental noise signal, and re-execute adjustment process shown in Fig. 4 until noise suppression effect again
Until the secondary demand for reaching user.
In conclusion the embodiment of the present invention joined on the basis of a upper embodiment carries out dynamic adjustment to inhibition signal
Process, keep inhibit signal it is synchronous with environmental noise signal variation so that the effect of noise suppression can achieve use always
The demand at family greatly improves the usage experience of user.
It should be understood that the size of the serial number of each step is not meant that the order of the execution order in above-mentioned each embodiment, respectively
The execution sequence of process should be determined by its function and internal logic, and the implementation process without coping with the embodiment of the present invention constitutes any
It limits.
As shown in figure 5, being a kind of schematic block diagram of denoising device provided in an embodiment of the present invention, described device be can wrap
It includes:
Noise signal obtains module 501, the environmental noise signal for being currently located region for obtaining target terminal；
Inhibit signal generation module 502, for calculating the frequency and phase of the environmental noise signal, then generate and institute
State that environmental noise signal frequency is identical, inhibition signal of opposite in phase；
Inhibit signal transmission module 503, for the inhibition signal to be transmitted in preset speaker；
Playing control module 504 plays the inhibition signal for controlling the speaker.
Further, the denoising device can also include:
Superposed signal obtains module, the superposed signal for being currently located region for obtaining the target terminal, the superposition
Signal is the signal that the environmental noise signal and the inhibition Signal averaging obtain；
Superposed signal Strength co-mputation module, for calculating the intensity of the superposed signal；
Broadcast sound volume adjustment module controls institute if the intensity for the superposed signal is greater than preset intensity threshold
It states speaker and adjusts broadcast sound volume.
Further, the denoising device can also include:
Terminal location obtains module, for obtaining the position of the target terminal；
Direction of propagation determining module, for being determined according to the position of the target terminal and the position of the preset speaker
The direction of propagation for inhibiting signal；
Outbound course control module, for controlling the outbound course of the speaker adjustment audio signal, so that the audio
The outbound course of signal is consistent with the inhibition direction of propagation of signal.
Further, the denoising device can also include:
Distance calculation module, for calculate between the position of the target terminal and the position of the preset speaker away from
From；
Noise signal intensity computing module, for calculating the intensity of the environmental noise signal；
Initial volume computing module, for according between the position of the target terminal and the position of the speaker away from
From and the Strength co-mputation of the environmental noise signal described in speaker initial play volume.
It is apparent to those skilled in the art that for convenience and simplicity of description, the device of foregoing description,
The specific work process of module and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
Fig. 6 is the schematic block diagram for the noise reduction terminal device that one embodiment of the invention provides.As shown in fig. 6, the embodiment
Noise reduction terminal device 6 includes: processor 60, memory 61 and is stored in the memory 61 and can be in the processor 60
The computer program 62 of upper operation.The processor 60 realizes that above-mentioned each noise-reduction method is real when executing the computer program 62
Apply the step in example, such as step S101 shown in FIG. 1 to step S104.Alternatively, the processor 60 executes the computer
Realize the function of each module/unit in above-mentioned each Installation practice when program 62, such as module 501 shown in Fig. 5 is to module 504
Function.
Illustratively, the computer program 62 can be divided into one or more module/units, it is one or
Multiple module/units are stored in the memory 61, and are executed by the processor 60, to complete the present invention.Described one
A or multiple module/units can be the series of computation machine program instruction section that can complete specific function, which is used for
Implementation procedure of the computer program 62 in the noise reduction terminal device 6 is described.For example, the computer program 62 can be with
It is divided into noise signal to obtain module, inhibit signal generation module, inhibit signal transmission module and playing control module.
The noise reduction terminal device 6 is the target terminal, can be mobile phone, tablet computer, smartwatch, intelligence
Bracelet or other wearable smart machines.The noise reduction terminal device may include, but be not limited only to, processor 60, memory
61.It will be understood by those skilled in the art that Fig. 6 is only the example of noise reduction terminal device 6, do not constitute to noise reduction terminal device
6 restriction may include perhaps combining certain components or different components, such as institute than illustrating more or fewer components
Stating noise reduction terminal device 6 can also include input-output equipment, network access equipment, bus etc..
The processor 60 can be central processing unit (Central Processing Unit, CPU), can also be
Other general processors, digital signal processor (Digital Signal Processor, DSP), specific integrated circuit
(Application Specific Integrated Circuit, ASIC), field programmable gate array (Field-
Programmable Gate Array, FPGA) either other programmable logic device, discrete gate or transistor logic,
Discrete hardware components etc..General processor can be microprocessor or the processor is also possible to any conventional processor
Deng.
The memory 61 can be the internal storage unit of the noise reduction terminal device 6, such as noise reduction terminal device 6
Hard disk or memory.The memory 61 is also possible to the External memory equipment of the noise reduction terminal device 6, such as noise reduction end
The plug-in type hard disk being equipped in end equipment 6, intelligent memory card (Smart Media Card, SMC), secure digital (Secure
Digital, SD) card, flash card (Flash Card) etc..Further, the memory 61 can also both include the noise reduction
The internal storage unit of terminal device 6 also includes External memory equipment.The memory 61 is for storing the computer program
And other programs and data needed for the noise reduction terminal device 6.The memory 61 can be also used for temporarily storing
Data through exporting or will export.
It is apparent to those skilled in the art that for convenience of description and succinctly, only with above-mentioned each function
Can unit, module division progress for example, in practical application, can according to need and by above-mentioned function distribution by different
Functional unit, module are completed, i.e., the internal structure of described device is divided into different functional unit or module, more than completing
The all or part of function of description.Each functional unit in embodiment, module can integrate in one processing unit, can also
To be that each unit physically exists alone, can also be integrated in one unit with two or more units, it is above-mentioned integrated
Unit both can take the form of hardware realization, can also realize in the form of software functional units.In addition, each function list
Member, the specific name of module are also only for convenience of distinguishing each other, the protection scope being not intended to limit this application.Above system
The specific work process of middle unit, module, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, is not described in detail or remembers in some embodiment
The part of load may refer to the associated description of other embodiments.
Those of ordinary skill in the art may be aware that list described in conjunction with the examples disclosed in the embodiments of the present disclosure
Member and algorithm steps can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually
It is implemented in hardware or software, the specific application and design constraint depending on technical solution.Professional technician
Each specific application can be used different methods to achieve the described function, but this realization is it is not considered that exceed
The scope of the present invention.
In embodiment provided by the present invention, it should be understood that disclosed device/terminal device and method, it can be with
It realizes by another way.For example, device described above/terminal device embodiment is only schematical, for example, institute
The division of module or unit is stated, only a kind of logical function partition, there may be another division manner in actual implementation, such as
Multiple units or components can be combined or can be integrated into another system, or some features can be ignored or not executed.Separately
A bit, shown or discussed mutual coupling or direct-coupling or communication connection can be through some interfaces, device
Or the INDIRECT COUPLING or communication connection of unit, it can be electrical property, mechanical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list
Member both can take the form of hardware realization, can also realize in the form of software functional units.
If the integrated module/unit be realized in the form of SFU software functional unit and as independent product sale or
In use, can store in a computer readable storage medium.Based on this understanding, the present invention realizes above-mentioned implementation
All or part of the process in example method, can also instruct relevant hardware to complete, the meter by computer program
Calculation machine program can be stored in a computer readable storage medium, the computer program when being executed by processor, it can be achieved that on
The step of stating each embodiment of the method.Wherein, the computer program includes computer program code, the computer program generation
Code can be source code form, object identification code form, executable file or certain intermediate forms etc..The computer-readable medium
It may include: any entity or device, recording medium, USB flash disk, mobile hard disk, magnetic that can carry the computer program code
Dish, CD, computer storage, read-only memory (ROM, Read-Only Memory), random access memory (RAM,
Random Access Memory), electric carrier signal, telecommunication signal and software distribution medium etc..It should be noted that described
The content that computer-readable medium includes can carry out increasing appropriate according to the requirement made laws in jurisdiction with patent practice
Subtract, such as does not include electric carrier signal and electricity according to legislation and patent practice, computer-readable medium in certain jurisdictions
Believe signal.
Embodiment described above is merely illustrative of the technical solution of the present invention, rather than its limitations；Although referring to aforementioned reality
Applying example, invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each
Technical solution documented by embodiment is modified or equivalent replacement of some of the technical features；And these are modified
Or replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution should all
It is included within protection scope of the present invention.
Claims (10)
1. a kind of noise-reduction method characterized by comprising
Obtain the environmental noise signal that target terminal is currently located region；
The frequency and phase of the environmental noise signal are calculated, phase identical as the environmental noise signal frequency is then generated
Opposite inhibition signal；
The inhibition signal is transmitted in preset speaker；
It controls the speaker and plays the inhibition signal.
2. noise-reduction method according to claim 1, which is characterized in that control the speaker play the inhibition signal it
Afterwards, further includes:
The superposed signal that the target terminal is currently located region is obtained, the superposed signal is the environmental noise signal and institute
State the signal for inhibiting Signal averaging to obtain；
Calculate the intensity of the superposed signal；
If the intensity of the superposed signal is greater than preset intensity threshold, controls the speaker and adjust broadcast sound volume, until institute
The intensity of superposed signal is stated less than or equal to until the intensity threshold.
3. noise-reduction method according to claim 1, which is characterized in that control the speaker play the inhibition signal it
Before, further includes:
Obtain the position of the target terminal；
The direction of propagation for inhibiting signal is determined according to the position of the position of the target terminal and the preset speaker；
The outbound course of the speaker adjustment audio signal is controlled, so that the outbound course of the audio signal and the inhibition are believed
Number the direction of propagation it is consistent.
4. noise-reduction method according to claim 1, which is characterized in that control the speaker play the inhibition signal it
Before, further includes:
Obtain the position of the target terminal；
Calculate the position of the target terminal and the distance between the position of the preset speaker；
Calculate the intensity of the environmental noise signal；
The distance between position according to the position of the target terminal and the speaker and the environmental noise signal it is strong
Degree calculates the initial play volume of the speaker.
5. noise-reduction method according to any one of claim 1 to 4, which is characterized in that further include:
If the region that is currently located of the target terminal is changed, the ring of the target terminal region after change is obtained
Then border noise signal returns to the step of executing the frequency and phase for calculating the environmental noise signal.
6. a kind of denoising device characterized by comprising
Noise signal obtains module, the environmental noise signal for being currently located region for obtaining target terminal；
Inhibit signal generation module, for calculating the frequency and phase of the environmental noise signal, then generates and the environment
Noise signal frequency is identical, opposite in phase inhibition signal；
Inhibit signal transmission module, for the inhibition signal to be transmitted in preset speaker；
Playing control module plays the inhibition signal for controlling the speaker.
7. denoising device according to claim 6, which is characterized in that further include:
Superposed signal obtains module, the superposed signal for being currently located region for obtaining the target terminal, the superposed signal
The signal obtained for the environmental noise signal and the inhibition Signal averaging；
Superposed signal Strength co-mputation module, for calculating the intensity of the superposed signal；
Broadcast sound volume adjustment module controls the sound if the intensity for the superposed signal is greater than preset intensity threshold
Case adjusts broadcast sound volume.
8. denoising device according to claim 6, which is characterized in that further include: terminal location obtains module, for obtaining
The position of the target terminal；
Direction of propagation determining module, for according to the position of the target terminal and the determination of the position of the preset speaker
Inhibit the direction of propagation of signal；
Outbound course control module, for controlling the outbound course of the speaker adjustment audio signal, so that the audio signal
Outbound course it is consistent with the inhibition direction of propagation of signal.
9. a kind of noise reduction terminal device, including memory, processor and storage are in the memory and can be in the processing
The computer program run on device, which is characterized in that the processor realizes such as claim 1 when executing the computer program
The step of to noise-reduction method described in any one of 5.
10. a kind of computer readable storage medium, the computer-readable recording medium storage has computer program, and feature exists
In the step of noise-reduction method of the realization as described in any one of claims 1 to 5 when the computer program is executed by processor
Suddenly.
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