CN106782598A - Television image and peripheral hardware synchronous sound control method and device - Google Patents
Television image and peripheral hardware synchronous sound control method and device Download PDFInfo
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- CN106782598A CN106782598A CN201611176437.6A CN201611176437A CN106782598A CN 106782598 A CN106782598 A CN 106782598A CN 201611176437 A CN201611176437 A CN 201611176437A CN 106782598 A CN106782598 A CN 106782598A
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- 230000002093 peripheral effect Effects 0.000 title claims abstract description 42
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000005236 sound signal Effects 0.000 claims abstract description 110
- 230000005540 biological transmission Effects 0.000 claims abstract description 35
- 239000000284 extract Substances 0.000 claims abstract description 17
- 238000000605 extraction Methods 0.000 claims abstract description 11
- 230000007613 environmental effect Effects 0.000 claims description 38
- 238000006243 chemical reaction Methods 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 8
- 238000003491 array Methods 0.000 claims description 6
- 230000003139 buffering effect Effects 0.000 claims description 6
- 238000012790 confirmation Methods 0.000 claims description 3
- 238000004364 calculation method Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 5
- 238000004422 calculation algorithm Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
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Classifications
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0316—Speech enhancement, e.g. noise reduction or echo cancellation by changing the amplitude
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0316—Speech enhancement, e.g. noise reduction or echo cancellation by changing the amplitude
- G10L21/0356—Speech enhancement, e.g. noise reduction or echo cancellation by changing the amplitude for synchronising with other signals, e.g. video signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/4302—Content synchronisation processes, e.g. decoder synchronisation
- H04N21/4307—Synchronising the rendering of multiple content streams or additional data on devices, e.g. synchronisation of audio on a mobile phone with the video output on the TV screen
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/439—Processing of audio elementary streams
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
- H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
- H04N21/440236—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display by media transcoding, e.g. video is transformed into a slideshow of still pictures, audio is converted into text
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computational Linguistics (AREA)
- Quality & Reliability (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention discloses a kind of television image and peripheral hardware synchronous sound control method, including：Picture signal in target code stream and voice signal are decoded, the voice signal for decoding acoustic amplitudes peak value in objective time interval is extracted, and will be played in transmission of sound signals to external equipment；Collection ambient sound, and extract environment acoustic amplitudes peak value in objective time interval；The decoded voice amplitude peak of extraction and ambient sound amplitude peak are contrasted, calculate television image play with transmit to external equipment play sound time it is poor；Television image signal time delay output is controlled according to the time difference.The invention also discloses a kind of television image and peripheral hardware synchronous sound control device.Existing television image and the nonsynchronous situation of peripheral hardware sound are prevented effectively from, the audiovisual experience of user is improved, user experience is enhanced.
Description
Technical field
The present invention relates to TV technology, more particularly to a kind of television image and external equipment synchronous sound control method
And device.
Background technology
Television equipment is one of the most frequently used multimedia play equipment, and television equipment can be with the image information in stream data
Decoded with acoustic information, played out on video screen and TV loudspeaker.As user wants to sound result of broadcast
More and more higher is sought, user wishes to hear more low distortion rate, the sound effect of less noise.
At present, due to cost factor, the loudspeaker that television equipment is carried do not reach intact sound to the TV commercially sold
Effect, user usually carries out sound broadcasting from the more power amplifying device of high sound effect or Baffle Box of Bluetooth equipment.But for outside
The audio playing device of setting, due to needing to take during data transmission in network telephony and decoding, and this taking is difficult to avoid that,
Often lead to video screen broadcasting pictures and play asynchronous with the sound of peripheral hardware, greatly reduce user's audiovisual experience.
The above is only used for auxiliary and understands technical scheme, does not represent and recognizes that the above is existing skill
Art.
The content of the invention
Method and dress it is a primary object of the present invention to provide a kind of automatic synchronization television image and external equipment sound
Put.
To achieve the above object, the present invention provides a kind of television image and external equipment synchronous sound control method, including：
Picture signal in target code stream and voice signal are decoded, the voice signal for decoding sound in objective time interval is extracted
Sound amplitude peak, and will be played in transmission of sound signals to external equipment；
Collection ambient sound, and extract environment acoustic amplitudes peak value in objective time interval；
The decoded voice amplitude peak of extraction and ambient sound amplitude peak are contrasted, calculate television image play with
It is poor to the sound time of external equipment broadcasting to transmit；
Television image signal time delay output is controlled according to the time difference, to reach sound picture synchronization.
Preferably, the decoded voice amplitude peak by extraction is contrasted with ambient sound amplitude peak, calculates electricity
It is poor to the sound time of external equipment broadcasting to be played depending on picture and transmitted, including：
Whether the voice signal and the voice signal of ambient sound decoding for judging target code stream decoding are same content；
When for same content, the voice signal according to target code stream decoding is played with the voice signal of ambient sound decoding
Time delay, calculate the decoded voice signal of target code stream and play with the transmission of sound signals to external equipment and be decoded into sound
The sound time difference T3 that message number is played.
Preferably, methods described also includes：
The ambient sound of the voice signal of target code stream decoding and collection is converted into oscillogram；
Preset times are obtained from decoded voice oscillogram and ambient sound oscillogram respectively according to the target interval time
After amplitude peak, correspondence composition decoded sound signal amplitude of wave form peak value array and environmental sound signal amplitude of wave form peak value
Group.
Preferably, whether the voice signal that the voice signal for judging target code stream decoding is decoded with ambient sound is same
One content, including：
By first amplitude peak in decoded sound signal amplitude of wave form peak value array and environmental sound signal amplitude of wave form
First amplitude peak is contrasted in peak value array；
If equal, compare second amplitude peak in two arrays；
If unequal, second amplitude peak and ambient sound message in decoded sound signal amplitude of wave form peak value array
First amplitude peak contrast in number amplitude of wave form peak value array, until comparing from decoded sound signal amplitude of wave form peak value array
To going out the amplitude peak equal with first amplitude peak in environmental sound signal amplitude of wave form peak value array；
If decoded sound signal amplitude of wave form peak value array and environmental sound signal amplitude of wave form peak value array continuous phase etc.
The quantity of amplitude peak be more than predetermined threshold value, then judge the sound that the voice signal of target code stream decoding is decoded with ambient sound
Signal is identical content.
Preferably, it is described according to the time difference, calculate target playback equipment picture buffering and wait target time section, and adjust electricity
Visible image signal output time delay, is synchronously included with reaching sound picture：
According to picture signal in target code stream by the time-consuming T1 that is shown in video screen after decoding, sound in target code stream
Signal by after decoding play time-consuming T2, and in target code stream transmission of sound signals to external equipment conversion after play and T2
Time difference T3, calculate picture signal buffer time Ts；
If T1<T2+T3, then Ts=T2+T3-T1, plays after picture signal is buffered into Ts；
If T1>T2+T3, then Ts=T1-T2-T3, plays after picture signal is buffered into Ts.
Additionally, to achieve the above object, the present invention also provides a kind of television image and peripheral hardware synchronous sound control device, wrap
Include：
Parsing module, for the picture signal in target code stream and voice signal to be decoded, extracts the voice signal of decoding
The acoustic amplitudes peak value in objective time interval；
Transport module, for the playing function in transmission of sound signals to external equipment, and using external equipment to be carried out
Play；
Acquisition module, for gathering ambient sound, and extracts environment acoustic amplitudes peak value in objective time interval；
Contrast module, for the decoded voice amplitude peak of extraction and ambient sound amplitude peak to be contrasted；
Computing module, for calculate television image play with transmit to external equipment play sound time it is poor；
Adjusting module, for controlling television image signal time delay output according to the time difference, to reach sound picture synchronization.
Preferably, described device also includes：
Judge module, the voice signal that the voice signal for judging target code stream decoding is decoded with ambient sound whether be
Same content；
The computing module, is additionally operable to when for same content, according to the voice signal and ambient sound of target code stream decoding
The time delay that the voice signal of sound decoding is played, calculates the decoded voice signal of target code stream and plays and the transmission of sound signals
To external equipment and be decoded into voice signal broadcasting sound time difference T3.
Preferably, described device also includes：
Conversion module, for the ambient sound of the voice signal of target code stream decoding and collection to be converted into oscillogram；
Acquisition module, for being obtained from decoded voice oscillogram and ambient sound oscillogram respectively according to the target interval time
After taking the amplitude peak of preset times, correspondence composition decoded sound signal amplitude of wave form peak value array and environmental sound signal waveform
Amplitude peak array.
Preferably, described device also includes：Confirm module,
The contrast module, is additionally operable to first amplitude peak and ring in decoded sound signal amplitude of wave form peak value array
First amplitude peak is contrasted in the sound signal waveform amplitude peak array of border；Contrast module is additionally operable to
If equal, compare second amplitude peak in two arrays；Contrast module is additionally operable to
If unequal, second amplitude peak and ambient sound message in decoded sound signal amplitude of wave form peak value array
First amplitude peak contrast in number amplitude of wave form peak value array, until comparing from decoded sound signal amplitude of wave form peak value array
To going out the amplitude peak equal with first amplitude peak in environmental sound signal amplitude of wave form peak value array；
The confirmation module, if for decoded sound signal amplitude of wave form peak value array and environmental sound signal amplitude of wave form
The quantity of the amplitude peak of peak value array continuous phase etc. is more than predetermined threshold value, then judge the voice signal and ring of target code stream decoding
The voice signal of border voice codec is identical content.
Preferably, the computing module, be additionally operable to according to picture signal in target code stream by after decoding in video screen
The time-consuming T1 of display, voice signal is by the time-consuming T2 that is played after decoding, and voice signal in target code stream in target code stream
The time difference T3 played with T2 is transmitted to external equipment conversion, picture signal buffer time Ts is calculated；
The adjusting module, if for T1<T2+T3, then Ts=T2+T3-T1, plays after picture signal is buffered into Ts；Adjust
Mould preparation block is additionally operable to
If T1>T2+T3, then Ts=T1-T2-T3, plays after picture signal is buffered into Ts.
The present invention decodes the picture signal in target code stream and voice signal, and the voice signal of extraction decoding is in target
Acoustic amplitudes peak value in section, and will be played in transmission of sound signals to external equipment；Collection ambient sound, and extract objective time interval
Interior environment acoustic amplitudes peak value；The decoded voice amplitude peak of extraction and ambient sound amplitude peak are contrasted, electricity is calculated
It is poor to the sound time of external equipment broadcasting to be played depending on picture and transmitted；Television image signal time delay is controlled according to the time difference
Output, to reach sound picture synchronization.Effectively television image and peripheral hardware synchronous sound are played, user's audiovisual experience is improved, and increase
Strong user experience.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of the first embodiment of television image of the present invention and peripheral hardware synchronous sound control method；
Fig. 2 is that the functional module of the first embodiment of television image of the present invention and peripheral hardware synchronous sound control device is illustrated
Figure；
Fig. 3 be according to object code streaming voice amplitude peak figure it is synchronous with the sound picture that ambient sound amplitude peak figure is contrasted when
Between difference process of analysis.
The realization of the object of the invention, functional characteristics and advantage will be described further referring to the drawings in conjunction with the embodiments.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
The present invention provides a kind of television image and peripheral hardware synchronous sound control method.
Reference picture 1, Fig. 1 is that the flow of the first embodiment of television image of the present invention and peripheral hardware synchronous sound control method is shown
It is intended to.
In one embodiment, methods described includes：
Step S1, the picture signal in target code stream and voice signal are decoded, and extract the voice signal of decoding in target
Acoustic amplitudes peak value in period, and will be played in transmission of sound signals to external equipment；
Picture signal and voice signal in target code stream is parsed, as picture signal and voice signal, and
Voice signal in objective time interval is intercepted in decoded sound signal, the amplitude peak of voice signal in the objective time interval is extracted, and
Peak-data is converted into combinations of values into peak value array, voice signal amplitude peak array in target code stream is obtained；By target
Played in voice signal complete transmission to the external equipment that code stream analyzing goes out.The target code stream, is transmission in internet
One section of video file, including picture signal and voice signal；The objective time interval is the voice signal that user is set in systems
Collect duration.
Step S2, gathers ambient sound, and extract environment acoustic amplitudes peak value in objective time interval；
Collection ambient sound, and in ambient sound has been collected, interception objective time interval sound is preserved, and is defined as ambient sound
Sound.Ambient sound decoding is turned into environmental sound signal, the environmental sound signal amplitude peak is extracted, according to extracting ambient sound
Sound signal-amplitude peaks, combinations of values into peak value array, i.e. ambient sound amplitude peak array are converted into by peak-data.It is described
Objective time interval is that the ambient sound that user is set in systems collects duration；The ambient sound includes target code stream in step S1
The voice signal and living environment sound for parsing and playing.
Further, the voice signal of target code stream analyzing and the ambient sound of collection extract acoustic amplitudes peak values it
Before, also include：
The ambient sound of the voice signal of target code stream decoding and collection is converted into oscillogram, i.e. decoded voice oscillogram
And ambient sound oscillogram.The decoded voice oscillogram and ambient sound oscillogram duration are all objective time interval, the target
Period is the voice signal interception duration that user is set in systems and ambient sound interception duration.
In decoded voice oscillogram and ambient sound oscillogram, according to the target interval time respectively from decoded voice waveform
The amplitude peak of preset times, correspondence composition decoded sound signal amplitude of wave form peak value are obtained in figure and ambient sound oscillogram
Group and environmental sound signal amplitude of wave form peak value array；The target interval time is set in systems for user, extraction sound
The interval time of sound amplitude peak.The interval time combines the duration of oscillogram, to make the array of the amplitude of wave form peak value of acquisition
In data volume be more than destination number；Such as described decoded voice oscillogram and ambient sound oscillogram extract acoustic amplitudes peak value
Array process is：
In target time section is decoded voice oscillogram and ambient sound oscillogram in 2 minutes, one is recorded every 2S
The amplitude peak of secondary voice signal, and define target code stream decoded sound signal amplitude peak and be recorded as n, code stream acoustic amplitudes peak
Value changes rate is m, x is designated as under definition, then mx=(nx–n(x-1))/n(x-1)；Ambient sound amplitude peak is recorded as p, ambient sound
Amplitude peak rate of change is q, x is designated as under definition, then qx=(px–p(x-1))/p(x-1)；Repeat record amplitude peak data 50 times,
50 numerical value of oscillogram amplitude peak array are obtained, the destination number is the minimum numerical value quantity of peak value array；That is group
Into decoded sound signal amplitude of wave form peak value array a1=[n1, n2, n3, n4, n5……n49, n50]；Define decoded sound signal ripple
Shape amplitude peak change table array a=[m1, m2, m3, m4, m5……m49, m50], wherein
m1=(n2–n1)/n1,
m2=(n3–n2)/n2,
m3=(n4–n3)/n3,
m4=(n5–n4)/n4,
……
m48=(n49–n48)/n48,
m49=(n50–n49)/n49。
Composition environmental sound signal amplitude of wave form peak value array b1=[p1, p2, p3, p4, p5……p49, p50]；Define environment
Sound signal waveform amplitude peak change table array b=[q1, q2, q3, q4, q5……q49, q50], wherein
q1=(p2–p1)/p1,
q2=(p3–p2)/p2,
q3=(p4–p3)/p3,
q4=(p5–p4)/p4,
……
q48=(p49–p48)/p48,
q49=(p50–p49)/p49。
Step S3, the decoded voice amplitude peak of extraction and ambient sound amplitude peak are contrasted, and are calculated TV and are drawn
Face play with transmit to external equipment play sound time it is poor；
Determine that the voice signal of current goal code stream decoding is same sound letter with the voice signal of ambient sound decoding
Number, time difference according to both setup algorithm formula is calculated, the time difference is：The voice signal of target code stream decoding is by passing
Transport to after playing in external equipment, current goal playback equipment is played the voice signal of target code stream decoding and transmitted to outside this
Time difference T3 after the voice signal broadcasting of the target code stream decoding of equipment, and believed by image in the time difference and target code stream
Number by the time-consuming T1 that show in video screen of decoding, and voice signal is broadcast by decoding in target playback equipment in target code stream
The time-consuming T2 put, calculates the sound time that television image is played with transmission of sound signals in target code stream is played to external equipment poor
Ts。
Further, before contrast object code streaming voice amplitude peak with ambient sound amplitude peak, also include：
Whether the voice signal and the voice signal of ambient sound decoding for judging target code stream decoding are same content；Pass through
The voice signal amplitude peak array of target code stream decoding and the contrast of ambient sound amplitude peak array, judge two sections of sound letters
Whether number it is same section of voice signal.
When the voice signal of target code stream decoding is same section of voice signal with the voice signal of ambient sound decoding, root
According to the time delay that the voice signal of target code stream decoding is played with the voice signal that ambient sound is decoded, target code stream decoding is calculated
Voice signal afterwards is played with the transmission of sound signals to external equipment and is decoded into the sound time difference T3 of voice signal broadcasting.
Further, judging whether the voice signal that the voice signal of target code stream decoding is decoded with ambient sound is same
Before one content, also include：
By first amplitude peak in decoded sound signal amplitude of wave form peak value array and environmental sound signal amplitude of wave form
First amplitude peak is contrasted in peak value array；If equal, compare second amplitude peak in two arrays；If not phase
Deng then second amplitude peak in decoded sound signal amplitude of wave form peak value array and environmental sound signal amplitude of wave form peak value
First amplitude peak contrast in array, until being compared out and ambient sound from decoded sound signal amplitude of wave form peak value array
The equal amplitude peak of first amplitude peak in signal waveform amplitude peak array；
In the decoded sound signal amplitude of wave form peak value array and environmental sound signal amplitude of wave form peak value that have got
In array, first data of decoded sound signal amplitude of wave form peak value array and environmental sound signal amplitude of wave form peak value are used
First data of group are compared, equal, continue to compare two next amplitude peak data of array successively；If unequal
Again first data of decoded sound signal amplitude of wave form peak value array and environmental sound signal amplitude of wave form peak value array are contrasted
Second data, the like untill equal.If the peak-data of two array successive objective quantity is all equal, recognize
For this two sections of voice signals are same contents.The destination number, is contrast voice signal phase that user is set in systems
Deng amplitude peak data bulk.And calculate the voice signal of target code stream decoding and the time difference of environmental sound signal.Specifically
The amplitude peak change table of target code stream and the amplitude peak change table of ambient sound are confirmed according to following calculation：
It is the value of the element of i to define following table during c [I] represents array c；For the object code that step S1 and step S2 get
Stream amplitude peak change table array a and ambient sound amplitude peak change table array b, is calculated by following rule, related
Flow chart of steps can refer to Fig. 3：
(1) i=0, k=0 are made；
(2) if i+k<50, step (3) is performed, otherwise perform step (8)；
(3) take a [i] and b [i+k] to be contrasted, if a [i] is equal with b [i+k], perform step (4), otherwise perform
Step (5)；
(4) i=i+1 is made, step (6) is performed；
(5) k=k+1, i=0 are made, step (2) is performed；
(6) if i>10, step (7) is performed, otherwise perform step (2)；
(7) value of k is returned, terminates computing；
(8) time difference do not find, terminate computing.
If decoded sound signal amplitude of wave form peak value array and environmental sound signal amplitude of wave form peak value array continuous phase etc.
The quantity of amplitude peak be more than predetermined threshold value, then judge decoded voice signal and the ambient sound for collecting for identical interior
Hold.
If confirming, the corresponding sound of amplitude peak change table is consistent, and two sections of time differences of voice signal are consumed for sound transmission
When T3；As described in Figure 3, according to the calculation of goal rule, if it is poor to calculate sound time, then it represents that two sections of amplitude peaks
Change table comes from same section of sound, and the time difference that will be calculated is defined as T3, for adjusting television image and peripheral hardware sound
Broadcasting it is consistent；
If confirming, the corresponding sound of amplitude peak change table is inconsistent, then it represents that current sound environment has exceeded system can
Identification range, the then time-consuming T3=T4*k of sound transmission；As described in Figure 3, according to the calculation of goal rule, if not calculating
Sound time is poor, then there may be the broadcasting of peripheral hardware sound and demonstrate excessive, or peripheral hardware sound is too small, or ambient noise has exceeded greatly very much
The recognizable set of target playback equipment, system has been unable to automatic synchronization phone picture and peripheral hardware sound, then be to calculate by script
The time difference for obtaining is defined as T3=T4*k, and the T4 is the fixed value of technical staff's setting in system, that can not calculate
The time difference is calculated according to algorithm correspondence in the case of going out the time difference, it is consistent with the broadcasting of peripheral hardware sound to adjust television image.
Step S4, controls television image signal time delay output, to reach sound picture synchronization according to the time difference.
Played according to the television image for calculating and transmit, correspondence calculating TV poor to the sound time of external equipment broadcasting
The delay time of picture signal, and control picture signal to be shown in TV after caching delay time in specified memory, reach sound
Draw synchronous effect.
Further, the specific adjustment for reaching sound picture synchronization includes：
According to picture signal in target code stream by after decoding playback equipment screen display time-consuming T1, target code stream
Middle voice signal by after decoding play time-consuming T2, in target code stream transmission of sound signals to external equipment conversion after play with
The time difference T3 of T2, calculates picture signal buffer time Ts；
Picture signal, the decoding of voice signal in the target code stream, picture signal by after decoding in playback equipment
Taking for screen display be T1, voice signal is T2 by taking for decoding；In target code stream, by decoding code stream
Picture signal and voice signal are separated, and display need to take T1 in the screen of playback equipment after the decoding of described image signal, described
Voice signal is after the decoding T2 in the taking for audio broadcasting of playback equipment；Decoded voice signal is calculated to be reached by transmission
It is T3 to be converted into taking for voice signal to peripheral hardware and peripheral hardware, then it is T1=T2+T3 that sound draws synchronous standard.The figure of target code stream
As signal is shown and played into equipment with voice signal by transmitting, according to picture signal in playback equipment screen display
The time-consuming T2 that is played in the audio of playback equipment of time-consuming T1 and voice signal, the result calculated is television image and peripheral hardware
The time difference T1=T2+T3 of synchronous sound.
If T1<T2+T3, then Ts=T2+T3-T1, plays after picture signal is buffered into Ts；
If the time-consuming T1 of the screen for obtaining T2s time-consuming less than audio and time difference T3, count according to calculation (T2+T3-T1)
Calculation obtains television image buffer time Ts, such as T1=1S, T2=0.5s, T3=1.5S, then T1<T2+T3, the electricity being calculated
Depending on picture buffering time Ts=(0.5+1.5-1), then television image is transmitted to specified memory headroom and store 1S, that is, buffer 1S
After play television image；The memory headroom specified, is the memory headroom of the existing buffered video of currently playing equipment.
If T1>T2+T3, then Ts=T1-T2-T3, plays after picture signal is buffered into Ts.
If the time-consuming T1 of the screen for obtaining T2s time-consuming more than audio and time difference T3, count according to calculation (T1-T2-T3)
Calculation obtains television image buffer time Ts, such as T1=2.5S, T2=0.5s, T3=1.5S, then T1>T2+T3, is calculated
Television image buffer time Ts=(2.5-0.5-1.5), then transmit television image to specified memory headroom and store 0.5S, i.e.,
Television image is played after buffering 0.5S.
In the present embodiment, the amplitude peak variation diagram of the voice signal come by extracting parsing in target code stream with gather
Acoustic amplitudes peak change figure in the ambient sound objective time interval for arriving, the two is calculated by object format, is drawn and is worked as
The display of preceding television image and peripheral hardware sound play the time difference for existing, by correspondence adjust the time official post television image with it is outer
If sound reaches unanimously, the audiovisual experience of user is improved, and enhance Consumer's Experience.
The present invention further provides a kind of television image and peripheral hardware synchronous sound control device.
Reference picture 2, Fig. 2 is the function mould of the first embodiment of automatic synchronization television image of the present invention and peripheral hardware audio unit
Block schematic diagram.
In one embodiment, described device includes：Parsing module 10, transmission playing module 20, acquisition module 30, conversion mould
Block 40, acquisition module 50, contrast module 60, computing module 70, judge module 80, confirmation module 90, adjusting module 100 and operation
Module 110.
Parsing module 10, for the picture signal in target code stream and voice signal to be decoded, extracts the sound letter of decoding
The acoustic amplitudes peak value number in objective time interval；
The picture signal and voice signal transmitted in target code stream are parsed, as picture signal and voice signal,
And voice signal in objective time interval is intercepted in decoded sound signal, voice signal amplitude peak in the objective time interval is extracted,
And peak-data is converted into combinations of values into peak value array, obtain voice signal amplitude peak array in target code stream；It is described
Target code stream, is the one section of video file transmitted in internet, including picture signal and voice signal；The objective time interval is
The voice signal that user is set in systems collects duration.
Transmission playing module 20, for by transmission of sound signals to external equipment, and uses the broadcasting work(of external equipment
Can play out；
In the entire audio signal transmission that will be parsed to peripheral hardware playback equipment, and by the decoding function of external equipment
Played after being decoded to voice signal, the external equipment is the hardware device for having audio playing function.
Acquisition module 30, for gathering ambient sound, and extracts environment acoustic amplitudes peak value in objective time interval；
Collection ambient sound, and in ambient sound has been collected, interception objective time interval sound is preserved, and is defined as ambient sound
Sound.Ambient sound decoding is turned into environmental sound signal, the environmental sound signal amplitude peak is extracted, according to extracting ambient sound
Sound signal-amplitude peaks, combinations of values into peak value array, i.e. ambient sound amplitude peak array are converted into by peak-data.It is described
Objective time interval is that the ambient sound that user is set in systems collects duration；The ambient sound includes target code stream in step S1
The voice signal and living environment sound for parsing and playing.
Further, the voice signal of target code stream analyzing and the ambient sound of collection extract acoustic amplitudes peak values it
Before, also include：
Conversion module 40, for the ambient sound of the voice signal of target code stream decoding and collection to be converted into oscillogram,
That is decoded voice oscillogram and ambient sound oscillogram.The decoded voice oscillogram and ambient sound oscillogram duration are all mesh
Timestamp section, the objective time interval is the voice signal interception duration that user is set in systems and ambient sound interception duration.
In the sound signal waveform figure and ambient sound oscillogram of decoding, also include：Acquisition module 50, for according to mesh
After mark interval time obtains the amplitude peak of preset times from decoded voice oscillogram and ambient sound oscillogram respectively, correspondence
Composition decoded sound signal amplitude of wave form peak value array and environmental sound signal amplitude of wave form peak value array；During the target interval
Between set in systems for user, extract the interval time of acoustic amplitudes peak values.The interval time combines the duration of oscillogram,
The data volume in the array of the amplitude of wave form peak value of acquisition is set to be more than destination number；Such as described decoded voice oscillogram and ring
Border sound waveform figure extracts acoustic amplitudes peak value array process and is：
In target time section is decoded voice oscillogram and ambient sound oscillogram in 2 minutes, one is recorded every 2S
The amplitude peak of secondary voice signal, and define target code stream decoded sound signal amplitude peak and be recorded as n, code stream acoustic amplitudes peak
Value changes rate is m, x is designated as under definition, then mx=(nx–n(x-1))/n(x-1)；Ambient sound amplitude peak is recorded as p, ambient sound
Amplitude peak rate of change is q, x is designated as under definition, then qx=(px–p(x-1))/p(x-1)；Repeat record amplitude peak data 50 times,
50 numerical value of oscillogram amplitude peak array are obtained, the destination number is the minimum numerical value quantity of peak value array；That is group
Into decoded sound signal amplitude of wave form peak value array a1=[n1, n2, n3, n4, n5……n49, n50]；Define decoded sound signal ripple
Shape amplitude peak change table array a=[m1, m2, m3, m4, m5……m49, m50], wherein
m1=(n2–n1)/n1,
m2=(n3–n2)/n2,
m3=(n4–n3)/n3,
m4=(n5–n4)/n4,
……
m48=(n49–n48)/n48,
m49=(n50–n49)/n49。
Composition environmental sound signal amplitude of wave form peak value array b1=[p1, p2, p3, p4, p5……p49, p50]；Define environment
Sound signal waveform amplitude peak change table array b=[q1, q2, q3, q4, q5……q49, q50], wherein
q1=(p2–p1)/p1,
q2=(p3–p2)/p2,
q3=(p4–p3)/p3,
q4=(p5–p4)/p4,
……
q48=(p49–p48)/p48,
q49=(p50–p49)/p49。
Contrast module 60, for the decoded voice amplitude peak of extraction and ambient sound amplitude peak to be contrasted；
Computing module 70, for calculate television image play with transmit to external equipment play sound time it is poor；
Determine that the voice signal of current goal code stream decoding is same sound letter with the voice signal of ambient sound decoding
Number, time difference according to both setup algorithm formula is calculated, the time difference is：The voice signal of target code stream decoding is by passing
Transport to after playing in external equipment, current goal playback equipment is played the voice signal of target code stream decoding and transmitted to outside this
Time difference T3 after the voice signal broadcasting of the target code stream decoding of equipment, and believed by image in the time difference and target code stream
Number by the time-consuming T1 that show in video screen of decoding, and voice signal is broadcast by decoding in target playback equipment in target code stream
The time-consuming T2 put, calculates the sound time that television image is played with transmission of sound signals in target code stream is played to external equipment poor
Ts。
Further, before contrast object code streaming voice amplitude peak with ambient sound amplitude peak, also include：
Judge module 80, whether the voice signal that the voice signal for judging target code stream decoding is decoded with ambient sound
It is same content；Voice signal amplitude peak array by target code stream decoding is right with ambient sound amplitude peak array
Than judging whether two sections of voice signals are same section of voice signal.
The computing module 70, being additionally operable to the voice signal that the voice signal of target code stream decoding decodes with ambient sound is
During same section of voice signal, voice signal and prolonging that the voice signal that ambient sound is decoded is played according to target code stream decoding
When, the decoded voice signal broadcasting of target code stream and the transmission of sound signals are calculated to external equipment and are decoded into sound letter
Number play sound time difference T3.
Further, judging whether the voice signal that the voice signal of target code stream decoding is decoded with ambient sound is same
Before one content, also include：
The contrast module 60, be additionally operable to by first amplitude peak in decoded sound signal amplitude of wave form peak value array with
First amplitude peak is contrasted in environmental sound signal amplitude of wave form peak value array；If equal, in comparing two arrays
Second amplitude peak；If unequal, second amplitude peak and ring in decoded sound signal amplitude of wave form peak value array
First amplitude peak contrast in the sound signal waveform amplitude peak array of border, until from decoded sound signal amplitude of wave form peak value
The amplitude peak equal with first amplitude peak in environmental sound signal amplitude of wave form peak value array is compared out in array；
In the decoded sound signal amplitude of wave form peak value array and environmental sound signal amplitude of wave form peak value that have got
In array, first data of decoded sound signal amplitude of wave form peak value array and environmental sound signal amplitude of wave form peak value are used
First data of group are compared, equal, continue to compare two next amplitude peak data of array successively；If unequal
Again first data of decoded sound signal amplitude of wave form peak value array and environmental sound signal amplitude of wave form peak value array are contrasted
Second data, the like untill equal.If the peak-data of two array successive objective quantity is all equal, recognize
For this two sections of voice signals are same contents.The destination number, is contrast voice signal phase that user is set in systems
Deng amplitude peak data bulk.And calculate the voice signal of target code stream decoding and the time difference of environmental sound signal.Specifically
The amplitude peak change table of target code stream and the amplitude peak change table of ambient sound are confirmed according to following calculation：
It is the value of the element of i to define following table during c [I] represents array c；For the object code that step S1 and step S2 get
Stream amplitude peak change table array a and ambient sound amplitude peak change table array b, is calculated by following rule, related
Flow chart of steps can refer to Fig. 3：
(1) i=0, k=0 are made；
(2) if i+k<50, step (3) is performed, otherwise perform step (8)；
(3) take a [i] and b [i+k] to be contrasted, if a [i] is equal with b [i+k], perform step (4), otherwise perform
Step (5)；
(4) i=i+1 is made, step (6) is performed；
(5) k=k+1, i=0 are made, step (2) is performed；
(6) if i>10, step (7) is performed, otherwise perform step (2)；
(7) value of k is returned, terminates computing；
(8) time difference do not find, terminate computing.
Module 90 is confirmed, if for decoded sound signal amplitude of wave form peak value array and environmental sound signal amplitude of wave form peak
The quantity of the continuous equal amplitude peak of value array is more than predetermined threshold value, then judge decoded voice signal with the ring for collecting
Border sound is identical content.
If confirming, the corresponding sound of amplitude peak change table is consistent, and two sections of time differences of voice signal are consumed for sound transmission
When T3；As described in Figure 3, according to the calculation of goal rule, if it is poor to calculate sound time, then it represents that two sections of amplitude peaks
Change table comes from same section of sound, and the time difference that will be calculated is defined as T3, for adjusting television image and peripheral hardware sound
Broadcasting it is consistent；
If confirming, the corresponding sound of amplitude peak change table is inconsistent, then it represents that current sound environment has exceeded system can
Identification range, the then time-consuming T3=T4*k of sound transmission；As described in Figure 3, according to the calculation of goal rule, if not calculating
Sound time is poor, then there may be the broadcasting of peripheral hardware sound and demonstrate excessive, or peripheral hardware sound is too small, or ambient noise has exceeded greatly very much
The recognizable set of target playback equipment, system has been unable to automatic synchronization phone picture and peripheral hardware sound, then be to calculate by script
The time difference for obtaining is defined as T3=T4*k, and the T4 is the fixed value of technical staff's setting in system, that can not calculate
The time difference is calculated according to algorithm correspondence in the case of going out the time difference, it is consistent with the broadcasting of peripheral hardware sound to adjust television image.
The computing module 70, is additionally operable to calculate the sound time that television image is played and transmitted to external equipment broadcasting
Difference；
Adjusting module 100, for according to time difference, control television image signal time delay output, to reach sound picture synchronization.
Played according to the television image for calculating and transmit, correspondence calculating TV poor to the sound time of external equipment broadcasting
The delay time of picture signal, and control picture signal to be shown in TV after caching delay time in specified memory, reach sound
Draw synchronous effect.
Further, the specific adjustment for reaching sound picture synchronization includes：
The computing module 70, is additionally operable to according to picture signal in target code stream by the screen after decoding in playback equipment
Display time-consuming T1, in target code stream voice signal by after decoding play time-consuming T2, transmission of sound signals in target code stream
The time difference T3 with T2 is played after to external equipment conversion, picture signal buffer time Ts is calculated；
Picture signal, the decoding of voice signal in the target code stream, picture signal by after decoding in playback equipment
Taking for screen display be T1, voice signal is T2 by taking for decoding；In target code stream, by decoding code stream
Picture signal and voice signal are separated, and display need to take T1, institute in the screen of playback equipment after the decoding of described image signal
It is after the decoding T2 in the taking for audio broadcasting of playback equipment to state voice signal；Decoded voice signal is calculated by transmission
Reach peripheral hardware and peripheral hardware to be converted into taking for voice signal be T3, then it is T1=T2+T3 that sound draws synchronous standard.Target code stream
Picture signal is shown and is played into equipment with voice signal by transmitting, aobvious in playback equipment screen according to picture signal
The time-consuming T2 that the time-consuming T1 for showing is played with voice signal in the audio of playback equipment, the result calculated is for television image and outward
If the time difference T1=T2+T3 of synchronous sound.
Operation module 110, if for T1<T2+T3, then Ts=T2+T3-T1, plays after picture signal is buffered into Ts；
If the time-consuming T1 of the screen that obtains T2s time-consuming less than audio and time difference T3's and, according to calculation (T2+T3-
T1 television image buffer time Ts, such as T1=1S, T2=0.5S, T3=1.5S) are calculated, then T1<T2+T3, calculates
Television image buffer time Ts=(0.5+1.5-1) for arriving, then transmit television image to specified memory headroom and store 1S, i.e.,
Television image is played after buffering 1S；The memory headroom specified, is that the internal memory of the existing buffered video of currently playing equipment is empty
Between.
The operation module 110, if being additionally operable to T1>T2+T3, then Ts=T1-T2-T3, broadcasts after picture signal is buffered into Ts
Put.
If the time-consuming T1 of the screen that obtains T2s time-consuming more than audio and time difference T3's and, according to calculation (T1-T2-
T3 television image buffer time Ts, such as T1=2.5S, T2=0.5S, T3=1.5S) are calculated, then T1>T2+T3, calculates
Television image buffer time Ts=(2.5-0.5-1.5) for obtaining, then transmit television image to specified memory headroom and store
0.5S, that is, play television image after buffering 0.5S.
In the present embodiment, the amplitude peak variation diagram of the voice signal come by extracting parsing in target code stream with gather
Acoustic amplitudes peak change figure in the ambient sound objective time interval for arriving, the two is calculated by object format, is drawn and is worked as
The display of preceding television image and peripheral hardware sound play the time difference for existing, by correspondence adjust the time official post television image with it is outer
If sound reaches unanimously, the audiovisual experience of user is improved, and enhance Consumer's Experience.
The preferred embodiments of the present invention are these are only, the scope of the claims of the invention is not thereby limited, it is every to utilize this hair
Equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of television image and peripheral hardware synchronous sound control method, it is characterised in that including step：
Picture signal in target code stream and voice signal are decoded, the voice signal for decoding sound in objective time interval is extracted and is shaken
Width peak value, and will be played in transmission of sound signals to external equipment；
Collection ambient sound, and extract environment acoustic amplitudes peak value in objective time interval；
The decoded voice amplitude peak of extraction and ambient sound amplitude peak are contrasted, television image is calculated and is played and transmission
The sound time played to external equipment is poor；
Television image signal time delay output is controlled according to the time difference, to reach sound picture synchronization.
2. television image as claimed in claim 1 and peripheral hardware synchronous sound control method, it is characterised in that described to extract
Decoded voice amplitude peak is contrasted with ambient sound amplitude peak, is calculated television image and is played and broadcasts with transmitting to external equipment
The sound time put is poor, including：
Whether the voice signal and the voice signal of ambient sound decoding for judging target code stream decoding are same content；
When for same content, voice signal and prolonging that the voice signal that ambient sound is decoded is played according to target code stream decoding
When, the decoded voice signal broadcasting of target code stream and the transmission of sound signals are calculated to external equipment and are decoded into sound letter
Number play sound time difference T3.
3. television image as claimed in claim 1 and peripheral hardware synchronous sound control method, it is characterised in that methods described is also wrapped
Include：
The ambient sound of the voice signal of target code stream decoding and collection is converted into oscillogram；
Obtain the amplitude of preset times from decoded voice oscillogram and ambient sound oscillogram respectively according to the target interval time
After peak value, correspondence composition decoded sound signal amplitude of wave form peak value array and environmental sound signal amplitude of wave form peak value array.
4. television image as claimed in claim 2 and peripheral hardware synchronous sound control method, it is characterised in that the judgement target
Whether the voice signal of code stream decoding is same content with the voice signal of ambient sound decoding, including：
By first amplitude peak in decoded sound signal amplitude of wave form peak value array and environmental sound signal amplitude of wave form peak value
First amplitude peak is contrasted in array；
If equal, compare second amplitude peak in two arrays；
If unequal, second amplitude peak and environmental sound signal ripple in decoded sound signal amplitude of wave form peak value array
First amplitude peak contrast in shape amplitude peak array, until being compared out from decoded sound signal amplitude of wave form peak value array
The amplitude peak equal with first amplitude peak in environmental sound signal amplitude of wave form peak value array；
If decoded sound signal amplitude of wave form peak value array is shaken with environmental sound signal amplitude of wave form peak value array continuous phase etc.
The quantity of width peak value is more than predetermined threshold value, then judge the voice signal of target code stream decoding and the voice signal of ambient sound decoding
It is identical content.
5. television image as claimed in claim 1 and peripheral hardware synchronous sound control method, it is characterised in that described according to the time
Difference, calculates television image buffering and waits target time section, and adjusts television image signal output time delay, to reach sound picture synchronous package
Include：
According to picture signal in target code stream by the time-consuming T1 that is shown in video screen after decoding, voice signal in target code stream
By after decoding play time-consuming T2, and in target code stream transmission of sound signals to external equipment conversion after play with T2 when
Between difference T3, calculate picture signal buffer time Ts；
If T1<T2+T3, then Ts=T2+T3-T1, plays after picture signal is buffered into Ts；
If T1>T2+T3, then Ts=T1-T2-T3, plays after picture signal is buffered into Ts.
6. a kind of television image and peripheral hardware synchronous sound control device, it is characterised in that including：
Parsing module, for the picture signal in target code stream and voice signal to be decoded, extracts the voice signal of decoding in mesh
Acoustic amplitudes peak value in timestamp section；
Transmission playing module, for the playing function in transmission of sound signals to external equipment, and using external equipment to be carried out
Play；
Acquisition module, for gathering ambient sound, and extracts environment acoustic amplitudes peak value in objective time interval；
Contrast module, for the decoded voice amplitude peak of extraction and ambient sound amplitude peak to be contrasted；
Computing module, for calculate television image play with transmit to external equipment play sound time it is poor；
Adjusting module, for controlling television image signal time delay output according to the time difference, to reach sound picture synchronization.
7. television image as claimed in claim 6 and peripheral hardware synchronous sound control device, it is characterised in that described device is also wrapped
Include：
Judge module, whether the voice signal that the voice signal for judging target code stream decoding is decoded with ambient sound is same
Content；
The computing module, is additionally operable to when for same content, the voice signal according to target code stream decoding and ambient sound solution
The time delay that the voice signal of code is played, calculates the decoded voice signal of target code stream and plays with the transmission of sound signals to outer
Portion's equipment is simultaneously decoded into the sound time difference T3 that voice signal is played.
8. television image as claimed in claim 7 and peripheral hardware synchronous sound control device, it is characterised in that described device is also wrapped
Include：
Conversion module, for the ambient sound of the voice signal of target code stream decoding and collection to be converted into oscillogram；
Acquisition module, for obtaining pre- from decoded voice oscillogram and ambient sound oscillogram respectively according to the target interval time
If after the amplitude peak of number of times, correspondence composition decoded sound signal amplitude of wave form peak value array and environmental sound signal amplitude of wave form
Peak value array.
9. television image as claimed in claim 8 and peripheral hardware synchronous sound control device, it is characterised in that described device is also wrapped
Include：Confirm module,
The contrast module, is additionally operable to first amplitude peak and ambient sound in decoded sound signal amplitude of wave form peak value array
First amplitude peak is contrasted in message amplitude of wave form peak value array；Contrast module is additionally operable to
If equal, compare second amplitude peak in two arrays；Contrast module is additionally operable to
If unequal, second amplitude peak and environmental sound signal ripple in decoded sound signal amplitude of wave form peak value array
First amplitude peak contrast in shape amplitude peak array, until being compared out from decoded sound signal amplitude of wave form peak value array
The amplitude peak equal with first amplitude peak in environmental sound signal amplitude of wave form peak value array；
The confirmation module, if for decoded sound signal amplitude of wave form peak value array and environmental sound signal amplitude of wave form peak value
The quantity of the continuous equal amplitude peak of array is more than predetermined threshold value, then judge the voice signal and ambient sound of target code stream decoding
The voice signal of sound decoding is identical content.
10. television image as claimed in claim 6 and peripheral hardware synchronous sound control device, it is characterised in that the calculating mould
Block, is additionally operable to according to picture signal in target code stream by the time-consuming T1 that is shown in video screen after decoding, sound in target code stream
Message number by after decoding play time-consuming T2, and in target code stream transmission of sound signals to external equipment conversion after play with
The time difference T3 of T2, calculates picture signal buffer time Ts；
The adjusting module, if for T1<T2+T3, then Ts=T2+T3-T1, plays after picture signal is buffered into Ts；Adjustment mould
Block is additionally operable to
If T1>T2+T3, then Ts=T1-T2-T3, plays after picture signal is buffered into Ts.
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