CN108986783A - It is a kind of it is three-dimensional dynamic catch in record and inhibit in real time the method and system of noise in unison - Google Patents
It is a kind of it is three-dimensional dynamic catch in record and inhibit in real time the method and system of noise in unison Download PDFInfo
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- CN108986783A CN108986783A CN201810642114.4A CN201810642114A CN108986783A CN 108986783 A CN108986783 A CN 108986783A CN 201810642114 A CN201810642114 A CN 201810642114A CN 108986783 A CN108986783 A CN 108986783A
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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
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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
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/10—Applications
- G10K2210/103—Three dimensional
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- Acoustics & Sound (AREA)
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- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Circuit For Audible Band Transducer (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
Technical solution of the present invention be related to it is a kind of it is three-dimensional dynamic catch in record and inhibit in real time the method and system of noise in unison, method is the following steps are included: A, picking up the voice signal at the dynamic scene of catching in real time and generating audio file；B, audio file described in real time parsing extracts noise signal feature, carries out reverse phase processing to the noise signal according to this feature and obtains inhibition noise signal；C, inhibition noise signal described in real time emission is to offset the noise for moving the scene of catching；Wherein, the voice signal includes the noise of performer's sound and non-performer's sound.Technical solution of the present invention the utility model has the advantages that by extracting the noise characteristic in voice signal, generate the inhibition noise of reverse phase, the noise at the dynamic scene of catching offset by playing the inhibition noise, so that performer's sound is become apparent from, recording result is more preferably.
Description
Technical field
The present invention relates to a kind of noise suppressing method and system more particularly to it is a kind of it is three-dimensional dynamic catch in record in unison simultaneously in real time
Inhibit the method and system of noise.
Background technique
Hollywood is the sheet of representative with " A Fanda " in recent years, makes people gapemouthed and brings three-dimensional animation technology into 21
In century, be worth colourful introduction among these is exactly the sound equipment and recording effect wherein shaken.Since the 21th century, electricity
While shadow picture is constantly progressive, acoustics and recording technology are also exploring higher field, in the shooting of film, usually
Be by true man performer between dynamic police station in performed to extract action data and voice data, when recording performer's sound, remove
It is live using outside sunpender microphone, performer also starts to have worn the equipment such as wireless microphone, but these equipment can not all press down
The masses, producer and environment bring noise in scene processed.
Summary of the invention
The present invention provide it is a kind of it is three-dimensional dynamic catch in record and inhibit in real time the method and system of noise in unison, pass through extraction sound
Noise characteristic in sound signal generates the inhibition noise of reverse phase, and the noise at the dynamic scene of catching is offset by playing the inhibition noise,
Performer's sound is set to become apparent from, recording result is more preferably.
Technical solution of the present invention first aspect be it is a kind of it is three-dimensional dynamic catch in record and inhibit noise in unison in real time method,
The following steps are included:
A, the voice signal at the dynamic scene of catching is picked up in real time and generates audio file；
B, audio file described in real time parsing extracts noise signal feature, is carried out according to this feature to the noise signal anti-
Phase processor, which obtains, inhibits noise signal；
C, inhibition noise signal described in real time emission is to offset the noise for moving the scene of catching；
Wherein, the voice signal includes the noise of performer's sound and non-performer's sound.
Further, the step B includes:
Audio file described in real time parsing, by performer's sample sound in voice signal therein and performer's sample sound library
It is compared, isolates the noise of performer's sound and non-performer's sound；
Noise section is intercepted, amplitude, frequency and the phase information of noise signal are therefrom extracted；
According to the amplitude, frequency and phase information, and phase phase identical as the noise amplitude signal and frequency is generated
The inhibition noise signal of poor 180 degree.
Further, before the voice signal being compared with performer's sample sound in performer's sample sound library, also
Include:
Acquire the sample sound of related performer；
The sample sound is stored in performer's sample sound library.
Further, after the noise for isolating performer's sound and non-performer's sound, further includes:
Determine the performer's intensity of sound isolated；
If performer's intensity of sound is lower than preset threshold, handled as noise.
Further, after noise of the inhibition noise signal described in the real time emission to offset the dynamic scene of catching further include:
After noise is neutralized counteracting, synchronous recording performer's sound.
Technical solution of the present invention second aspect be it is a kind of it is three-dimensional dynamic catch in record and inhibit noise in unison in real time system,
Include:
First pickup module, for picking up the voice signal at the dynamic scene of catching in real time and generating audio file；
Noise processed module extracts noise signal feature for audio file described in real time parsing, according to this feature to institute
It states noise signal and carries out reverse phase processing acquisition inhibition noise signal；
Noise elimination module inhibits noise signal for real time emission to offset the noise at the dynamic scene of catching.
Further, the noise processed module includes:
Voice signal resolution unit, for audio file described in real time parsing, by voice signal therein and performer's sound
Performer's sample sound in sample database is compared, and isolates the noise of performer's sound and non-performer's sound；
Noise characteristic extraction unit therefrom extracts amplitude, frequency and the phase of noise signal for intercepting noise section
Information；
Inhibit noise generating unit, according to the amplitude, frequency and phase information, generate with the noise amplitude signal and
Frequency is identical and the inhibition noise signal of phase phase difference 180 degree.
Further, the system further include:
Sample collection module, for acquiring the sample sound of related performer；
Sample memory module, for the sample sound to be stored in performer's sample sound library.
Further, the system further include:
Intensity of sound determining module, for determining the performer's intensity of sound isolated；
Classifying module, for being classified as noise and being handled when performer's intensity of sound is lower than preset threshold.
Further, the system further include:
Second pickup module, for after noise is neutralized counteracting, synchronous recording performer's sound.
The invention has the benefit that the noise for inhibiting the dynamic scene of catching useless, keeps performer's sound apparent, recording result
More preferably.
Detailed description of the invention
Fig. 1 is the process for recording and inhibiting in real time the method for noise in catching according to the three-dimensional of the embodiment of the present invention is dynamic in unison
Figure；
Fig. 2 is the schematic diagram for inhibiting the process of noise according to the generation in the first embodiment of the present invention；
Fig. 3 is the schematic diagram for inhibiting the process of noise according to the generation in the second embodiment of the present invention；
Fig. 4 is the system block diagram for recording and inhibiting in real time noise in catching according to the three-dimensional of the embodiment of the present invention is dynamic in unison；
Fig. 5 is the one kind for recording and inhibiting in real time the system of noise in catching according to the three-dimensional of the embodiment of the present invention is dynamic in unison
Application scenarios schematic diagram.
Specific embodiment
It is only to be not intended to be limiting the disclosure merely for for the purpose of describing particular embodiments in the term that the disclosure uses.
The "an" of the singular used in disclosure and the accompanying claims book, " described " and "the" are also intended to including majority
Form, unless the context clearly indicates other meaning.It is also understood that term "and/or" used herein refers to and wraps
It may be combined containing one or more associated any or all of project listed.
It will be appreciated that though various modules, but this may be described using term first, second, third, etc. in the disclosure
A little modules should not necessarily be limited by these terms.These terms are only used to for same type of module being distinguished from each other out.For example, not departing from
In the case where disclosure range, the first module can also be referred to as the second module, and similarly, the second module can also be referred to as
One module.The use of provided in this article any and all example or exemplary language (" such as ", " such as ") is intended merely to more
Illustrate the embodiment of the present invention well, and unless the context requires otherwise, otherwise the scope of the present invention will not be applied and be limited.
Hereinafter, it reference will also be given to attached drawing and the present invention be explained in greater detail.
The flow chart of the real-time method recorded in unison and inhibit noise in catching is moved with reference to three-dimensional shown in FIG. 1.This method packet
It includes following key step: A, picking up the voice signal at the dynamic scene of catching in real time and generate audio file；B, audio described in real time parsing
File extracts noise signal feature, carries out reverse phase processing to the noise signal according to this feature and obtains inhibition noise signal；C,
Inhibition noise signal described in real time emission is to offset the noise for moving the scene of catching；Wherein, the voice signal include performer's sound and
The noise of non-performer's sound.
First embodiment
Further, as shown in Fig. 2, noise processed process in key step B in the embodiment, comprising:
S21, the sample sound for acquiring related performer；
S22, the sample sound is stored in performer's sample sound library；
Audio file described in S23, real time parsing, by performer's sound in voice signal therein and performer's sample sound library
Sample is compared, and isolates the noise of performer's sound and non-performer's sound；
S24, interception noise section, therefrom extract amplitude, frequency and the phase information of noise signal；
S25, according to the amplitude, frequency and phase information, generate and phase identical as the noise amplitude signal and frequency
The inhibition noise signal of phase difference 180 degree.
Second embodiment
Sound in the recording process at the dynamic scene of catching, generally comprises the sound of performer, the sound of field personnel, encloses
The sound and ambient noise of the masses are seen, the recording for three-dimensional animation, in addition to the sound of performer, other sound are all extra
, regard as noise, and the performer that takes part in a performance be also possible to issue it is some with recorded content is incoherent speaks in a low voice, performer at this time
Sound be then also it is extra, be equally considered noise.In this case, as shown in figure 3, noise in key step B in the embodiment
Treatment process, comprising:
S21, the sample sound for acquiring related performer；
S22, the sample sound is stored in performer's sample sound library；
Audio file described in S23, real time parsing, by performer's sound in voice signal therein and performer's sample sound library
Sample is compared, and isolates the noise of performer's sound and non-performer's sound；
S231, the performer's intensity of sound isolated is determined；
If S232, performer's intensity of sound are lower than preset threshold, handled as noise；
S24, interception noise section, therefrom extract amplitude, frequency and the phase information of noise signal；
S25, according to the amplitude, frequency and phase information, generate and phase identical as the noise amplitude signal and frequency
The inhibition noise signal of phase difference 180 degree.
It should be appreciated that the embodiment of the present invention can be by computer hardware, the combination of hardware and software or by depositing
The computer instruction in non-transitory computer-readable memory is stored up to be effected or carried out.Standard volume can be used in the method
Journey technology-includes that the non-transitory computer-readable storage media configured with computer program is realized in computer program,
In configured in this way storage medium make computer operated in a manner of specific and is predefined-according to describing in a particular embodiment
Method and attached drawing.Each program can be realized with the programming language of level process or object-oriented with logical with computer system
Letter.However, if desired, the program can be realized with compilation or machine language.Under any circumstance, the language can be compiling or
The language of explanation.In addition, the program can be run on the specific integrated circuit of programming for this purpose.
In addition, the operation of process described herein can be performed in any suitable order, unless herein in addition instruction or
Otherwise significantly with contradicted by context.Process described herein (or modification and/or combination thereof) can be held being configured with
It executes, and is can be used as jointly on the one or more processors under the control of one or more computer systems of row instruction
The code (for example, executable instruction, one or more computer program or one or more application) of execution, by hardware or its group
It closes to realize.The computer program includes the multiple instruction that can be performed by one or more processors.
Further, this method can be in any type for being operably coupled to suitable tomographic data scanning means
Computing platform in realize, including but not limited to PC, mini-computer, main frame, work station, network or distributed meter
Calculate environment, individual or integrated computer platform or communicated with charged particle tool or other imaging devices etc..This hair
Bright various aspects can be realized with the machine readable code that is stored in non-transitory storage medium or equipment, either removable
It is dynamic to be also integrated into computing platform, such as hard disk, optically read and/or write-in storage medium, RAM, ROM, so that it can be by
Programmable calculator is read, and can be used for configuration and operation computer when storage medium or equipment are read by computer to execute
This described process.In addition, machine readable code, or part thereof can be transmitted by wired or wireless network.As such matchmaker
Body includes hair as described herein when realizing the instruction or program of steps described above in conjunction with microprocessor or other data processors
Bright includes these and other different types of non-transitory computer-readable storage medias.When method according to the present invention and
When technology programs, the invention also includes computers itself.
Computer program can be applied to input data to execute function as described herein, to convert input data with life
At storing to the output data of nonvolatile memory.Output information can also be applied to one or more output equipments as shown
Device.In the preferred embodiment of the invention, the data of conversion indicate physics and tangible object, including the object generated on display
Reason and the particular visual of physical objects are described.
Specifically, with reference to Fig. 4, the present invention by it is a kind of it is three-dimensional it is dynamic catch in record and inhibit noise in unison in real time system,
To implement the above method.The system includes: the first pickup module 10, for picking up voice signal and the generation at the dynamic scene of catching in real time
Audio file；Noise processed module 20 extracts noise signal feature for audio file described in real time parsing, according to this feature pair
The noise signal carries out reverse phase processing and obtains inhibition noise signal；Noise elimination module 30 inhibits noise signal for real time emission
To offset the noise at the dynamic scene of catching.
Further, the noise processed module 20 includes: voice signal resolution unit 23, for audio described in real time parsing
Voice signal therein is compared with performer's sample sound in performer's sample sound library, isolates performer's sound by file
With the noise of non-performer's sound；Noise characteristic extraction unit 24 therefrom extracts the vibration of noise signal for intercepting noise section
Width, frequency and phase information；Inhibit noise generating unit 25, according to the amplitude, frequency and phase information, generation is made an uproar with described
Acoustical signal amplitude and frequency is identical and the inhibition noise signal of phase phase difference 180 degree.
Further, the system further include: sample collection module 21, for acquiring the sample sound of related performer；Sample is deposited
Module 22 is stored up, for the sample sound to be stored in performer's sample sound library.
Further, the system further include: intensity of sound determining module 231, for determining the performer's intensity of sound isolated；
Classifying module 232, for being classified as noise and being handled when performer's intensity of sound is lower than preset threshold.
Further, the system further include: the second pickup module 40, for after noise is neutralized counteracting, synchronous recording to be drilled
Member's sound.
Wherein, the first pickup module 10 uses wireless array Mike using recording dedicated microphone, the second pickup module 40
Wind；Noise elimination module 30 uses HIFI sound equipment, and noise processed module 20, intensity of sound determining module 231 and classifying module 232 are adopted
With computer installation, wireless array microphone is connect with synchronous recording system.
In addition, implementing the system of first embodiment and second embodiment, difference is intensity of sound determining module 231 and returns
The presence or absence of generic module 232 removes intensity of sound determining module 231 and classifying module 232 therein i.e. when implementing first embodiment
It can.
As shown in figure 5, being an application scenarios of the invention；
In the recording of the interior capture and sound for arranging a performer to be acted of dynamic police station, after performer is in place, according to drilling
The position and room-size of member determines quantity and the placement position of each equipment, starts to be recorded after the completion of recording arrangement installing.
Dedicated microphone of recording picks up the sound in scene and generates audio file, is conducted into computer, while sample is stored mould
The performer's sample sound gathered in advance stored in block 22 imports computer, and computer passes through corresponding program for audio file solution
Analysis, and compared with performer's sample sound, performer's sound and noise are isolated, then conduct when wherein performer's sound is less than preset threshold
Noise carries out subsequent processing, then intercepts noise section and carries out feature extraction, is generated with noise signal according to these features with frequency
With the inhibition noise signal of amplitude but phase difference 180 degree, by obtained inhibition noise signal by HIFI sound equipment play back with
The noise between moving police station is offset, in this way, just only remaining performer's sound can be heard between dynamic police station, passes through wireless array at this time
Microphone can record clear noise-free performer's sound, ensure that animation sound quality.
The above, only presently preferred embodiments of the present invention, the invention is not limited to above embodiment, as long as
It reaches technical effect of the invention with identical means, all within the spirits and principles of the present invention, any modification for being made,
Equivalent replacement, improvement etc., should be included within the scope of the present invention.Its technical solution within the scope of the present invention
And/or embodiment can have a variety of different modifications and variations.
Claims (10)
1. it is a kind of it is three-dimensional dynamic catch in record and inhibit noise in unison in real time method, which is characterized in that the method includes following
Step:
A, the voice signal at the dynamic scene of catching is picked up in real time and generates audio file；
B, audio file described in real time parsing extracts noise signal feature, is carried out at reverse phase according to this feature to the noise signal
Reason, which obtains, inhibits noise signal；
C, inhibition noise signal described in real time emission is to offset the noise for moving the scene of catching；
Wherein, the voice signal includes the noise of performer's sound and non-performer's sound.
2. according to claim 1 it is three-dimensional dynamic catch in record and inhibit noise in unison in real time method, which is characterized in that it is described
Step B includes:
Audio file described in real time parsing carries out performer's sample sound in voice signal therein and performer's sample sound library
It compares, isolates the noise of performer's sound and non-performer's sound；
Noise section is intercepted, amplitude, frequency and the phase information of noise signal are therefrom extracted；
According to the amplitude, frequency and phase information, and phase phase difference 180 identical as the noise amplitude signal and frequency is generated
The inhibition noise signal of degree.
3. according to claim 2 it is three-dimensional dynamic catch in record and inhibit noise in unison in real time method, which is characterized in that by institute
It states before voice signal is compared with performer's sample sound in performer's sample sound library, further includes:
Acquire the sample sound of related performer；
The sample sound is stored in performer's sample sound library.
4. according to claim 2 it is three-dimensional dynamic catch in record and inhibit noise in unison in real time method, which is characterized in that it is described
After the noise for isolating performer's sound and non-performer's sound, further includes:
Determine the performer's intensity of sound isolated；
If performer's intensity of sound is lower than preset threshold, handled as noise.
5. according to claim 1 it is three-dimensional dynamic catch in record and inhibit noise in unison in real time method, which is characterized in that it is described
After noise of the inhibition noise signal described in real time emission to offset the dynamic scene of catching further include:
After noise is neutralized counteracting, synchronous recording performer's sound.
6. it is a kind of it is three-dimensional dynamic catch in record and inhibit noise in unison in real time system, which is characterized in that the system includes:
First pickup module (10), for picking up the voice signal at the dynamic scene of catching in real time and generating audio file；
Noise processed module (20) extracts noise signal feature for audio file described in real time parsing, according to this feature to institute
It states noise signal and carries out reverse phase processing acquisition inhibition noise signal；
Noise elimination module (30) inhibits noise signal for real time emission to offset the noise at the dynamic scene of catching.
7. it is according to claim 6 it is three-dimensional dynamic catch in record and inhibit noise in unison in real time system, which is characterized in that institute
Stating noise processed module (20) includes:
Voice signal resolution unit (23), for audio file described in real time parsing, by voice signal therein and performer's sound
Performer's sample sound in sample database is compared, and isolates the noise of performer's sound and non-performer's sound；
Noise characteristic extraction unit (24) therefrom extracts amplitude, frequency and the phase of noise signal for intercepting noise section
Information；
Inhibit noise generating unit (25), according to the amplitude, frequency and phase information, generate with the noise amplitude signal and
Frequency is identical and the inhibition noise signal of phase phase difference 180 degree.
8. it is according to claim 7 it is three-dimensional dynamic catch in record and inhibit noise in unison in real time system, which is characterized in that also
Include:
Sample collection module (21), for acquiring the sample sound of related performer；
Sample memory module (22), for the sample sound to be stored in performer's sample sound library.
9. it is according to claim 7 it is three-dimensional dynamic catch in record and inhibit noise in unison in real time system, which is characterized in that also
Include:
Intensity of sound determining module (231), for determining the performer's intensity of sound isolated；
Classifying module (232), for being classified as at noise when performer's intensity of sound is lower than preset threshold
Reason.
10. it is according to claim 6 it is three-dimensional dynamic catch in record and inhibit noise in unison in real time system, which is characterized in that
Further include:
Second pickup module (40), for after noise is neutralized counteracting, synchronous recording performer's sound.
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