CN105100794A - Audio and video synchronization test method and apparatus - Google Patents
Audio and video synchronization test method and apparatus Download PDFInfo
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- CN105100794A CN105100794A CN201410201613.1A CN201410201613A CN105100794A CN 105100794 A CN105100794 A CN 105100794A CN 201410201613 A CN201410201613 A CN 201410201613A CN 105100794 A CN105100794 A CN 105100794A
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Abstract
The invention discloses an audio and video synchronization test method and apparatus. When a device under test is tested, an auxiliary device for assisting the test is introduced. Audio and video signals, produced when the auxiliary device plays standard audio and video synchronization signals, are acquired. Meanwhile, when the device under test records that the auxiliary device plays the standard audio and video synchronization signals, audio and video signals outputted by the device under test are acquired. Audio and video synchronization values of the device under test are calculated according to the acquired audio and video signals of the auxiliary device and the audio and video signals of the device under test. The invention has the beneficial effects of reducing the audio and video playing time delay in an intelligent audio and video playing device.
Description
Technical field
The present invention relates to intelligent sound video playback field, particularly relate to a kind of audio-visual synchronization method of testing and device.
Background technology
Along with the develop rapidly of image procossing and audio signal processing technique improves with continuous, intelligent sound video playback apparatus has also been endowed more abundant function.For intelligent TV set, user can carry out Internet chat, video recording etc. by the intelligent TV set possessing camera and microphone; Intelligent TV set is carrying out in the application scenarios that Internet chat and video recording etc. need Voice & Video synchronously to play, require higher to the synchronism that the Voice & Video of this intelligent TV set is play, if Voice & Video play can not synchronously or the two broadcasting time delay long, then will certainly have influence on the normal use of this intelligent TV set.
The synchronous test index of the Voice & Video play of conventional measurement intelligent sound video playback apparatus is audio-visual synchronization parameter, if this audio-visual synchronization optimum configurations is unreasonable, then the time delay between Voice & Video can be caused long; Such as, the personage in video pictures has done the action being over and speaking, and the voice that in audio frequency, this personage's correspondence is said also are not play in time, and this obviously have impact on the normal use of intelligent sound video playback apparatus.Therefore, how the problem demanding prompt solution that synchronous debugging becomes intelligent sound video playback apparatus industry is carried out to the Voice & Video of intelligent sound video playback apparatus.
Summary of the invention
In view of above content, be necessary to provide a kind of audio-visual synchronization method of testing and device, to solve the problem that intelligent sound video playback apparatus sound intermediate frequency is play and video playback time delay is long.
The embodiment of the invention discloses a kind of audio-visual synchronization method of testing, comprise the following steps:
The audio signal S11 produced when gathering auxiliary equipment playing standard audio-visual synchronization signal and vision signal S12, and according to the described audio signal S11 gathered and vision signal S12, obtain the audio-visual synchronization parameter value Δ S1 of described auxiliary equipment;
Devices to test record described auxiliary equipment play described Standard Audiovisual synchronizing signal time, gather audio signal S21 and the vision signal S22 of the output of described Devices to test, and according to the described audio signal S21 gathered and vision signal S22, obtain the audio-visual synchronization parameter value Δ S2 of described Devices to test;
According to the described audio-visual synchronization parameter value Δ S1 obtained and audio-visual synchronization parameter value Δ S2, calculate and obtain the audio-visual synchronization value Δ S of described Devices to test; Wherein, described Δ S=Δ S2-Δ S1.
Preferably, the audio signal S11 produced during described collection auxiliary equipment playing standard audio-visual synchronization signal and vision signal S12, and according to the described audio signal S11 gathered and vision signal S12, the step obtaining the audio-visual synchronization parameter value Δ S1 of described auxiliary equipment comprises:
When described auxiliary equipment plays the described Standard Audiovisual synchronizing signal of exterior terminal input, utilize optical flame detector that the vision signal that described auxiliary equipment exports is sent to oscillographic first passage, gather described vision signal S12;
While the described vision signal S12 of collection, utilize voltage probe that the audio signal that described auxiliary equipment exports is sent to described oscillographic second channel, gather described audio signal S11;
The audio volume control that the described audio signal S11 simultaneously shown on user interface according to described oscilloscope is corresponding and video waveform corresponding to described vision signal S12, obtain the voltage time delayed difference value of described vision signal S12 and described audio signal S11 in preset duration, obtain the audio-visual synchronization parameter value Δ S1 of described auxiliary equipment.
Preferably, the vision signal that described auxiliary equipment exports is sent to oscillographic first passage by the described optical flame detector that utilizes, and the step gathering described vision signal S12 comprises:
Utilize described optical flame detector that the light signal of the described video image collected is converted to the signal of telecommunication and the described signal of telecommunication after conversion is sent to oscillographic first passage as vision signal S11, by described oscilloscope, the described vision signal S11 obtained after conversion being shown.
Preferably, described audio-visual synchronization parameter value Δ S2 is the voltage time delayed difference value of described vision signal S22 and described audio signal S21 in preset duration.
Preferably, described auxiliary equipment is identical with the machine core board hardware of Devices to test.
The embodiment of the present invention also discloses a kind of audio-visual synchronization testing apparatus, comprises signal acquisition module and synchronization value acquisition module;
Described signal acquisition module is used for:
The audio signal S11 produced when gathering auxiliary equipment playing standard audio-visual synchronization signal and vision signal S12, and according to the described audio signal S11 gathered and vision signal S12, obtain the audio-visual synchronization parameter value Δ S1 of described auxiliary equipment;
Devices to test record described auxiliary equipment play described Standard Audiovisual synchronizing signal time, gather audio signal S21 and the vision signal S22 of the output of described Devices to test, and according to the described audio signal S21 gathered and vision signal S22, obtain the audio-visual synchronization parameter value Δ S2 of described Devices to test;
Described synchronization value acquisition module is used for:
According to the described audio-visual synchronization parameter value Δ S1 obtained and audio-visual synchronization parameter value Δ S2, calculate and obtain the audio-visual synchronization value Δ S of described Devices to test; Wherein, described Δ S=Δ S2-Δ S1.
Preferably, described signal acquisition module also for:
When described auxiliary equipment plays the described Standard Audiovisual synchronizing signal of exterior terminal input, utilize optical flame detector that the vision signal that described auxiliary equipment exports is sent to oscillographic first passage, gather described vision signal S12;
While the described vision signal S12 of collection, utilize voltage probe that the audio signal that described auxiliary equipment exports is sent to described oscillographic second channel, gather described audio signal S11;
The audio volume control that the described audio signal S11 simultaneously shown on user interface according to described oscilloscope is corresponding and video waveform corresponding to described vision signal S12, obtain the voltage time delayed difference value of described vision signal S12 and described audio signal S11 in preset duration, obtain the audio-visual synchronization parameter value Δ S1 of described auxiliary equipment.
Preferably, described signal acquisition module also for:
Utilize described optical flame detector that the light signal of the described video image collected is converted to the signal of telecommunication and the described signal of telecommunication after conversion is sent to oscillographic first passage as vision signal S11, by described oscilloscope, the described vision signal S11 obtained after conversion being shown.
Preferably, described audio-visual synchronization parameter value Δ S2 is the voltage time delayed difference value of described vision signal S22 and described audio signal S21 in preset duration.
Preferably, described auxiliary equipment is identical with the machine core board hardware of Devices to test.
The audio signal S11 that the embodiment of the present invention produces when gathering auxiliary equipment playing standard audio-visual synchronization signal and vision signal S12, and according to the described audio signal S11 gathered and vision signal S12, obtain the audio-visual synchronization parameter value Δ S1 of described auxiliary equipment; Devices to test record described auxiliary equipment play described Standard Audiovisual synchronizing signal time, gather audio signal S21 and the vision signal S22 of the output of described Devices to test, and according to the described audio signal S21 gathered and vision signal S22, obtain the audio-visual synchronization parameter value Δ S2 of described Devices to test; According to the described audio-visual synchronization parameter value Δ S1 obtained and audio-visual synchronization parameter value Δ S2, calculate the audio-visual synchronization value Δ S of described Devices to test; Wherein, described Δ S=Δ S2-Δ S1; Have the beneficial effect shortening the broadcasting of intelligent sound video playback apparatus sound intermediate frequency and video playback time delay, the shortening effect for the audio frequency and video time delay of playing audio/video under voice call is especially remarkable.
Accompanying drawing explanation
Fig. 1 is audio-visual synchronization method of testing one embodiment schematic flow sheet of the present invention;
Fig. 2 implements audio-visual synchronization method of testing one embodiment application scenarios schematic diagram of the present invention;
Fig. 3 is audio-visual synchronization testing apparatus one embodiment high-level schematic functional block diagram of the present invention.
The realization of embodiment of the present invention object, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Technical scheme of the present invention is further illustrated below in conjunction with Figure of description and specific embodiment.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Audio-visual synchronization method of testing of the present invention can be applied in arbitraryly to be possessed in the playing audio/video of camera, and audio-visual synchronization testing apparatus of the present invention can be deployed in arbitraryly to be possessed on the playing audio/video of camera; In audio-visual synchronization method of testing of the present invention and device, the intelligent sound video playback apparatus possessing camera comprises intelligent TV set and other intelligent sound video playback apparatus, and the present embodiment does not carry out exhaustive one by one.In the following embodiment of audio-visual synchronization method of testing of the present invention and device, only be described for intelligent TV set, about the implementation of the intelligent sound video play device of other particular types and the implementation of intelligent TV set similar, the embodiment of the present invention does not repeat one by one.
Embodiments provide a kind of audio-visual synchronization method of testing; As shown in Figure 1, audio-visual synchronization method of testing of the present invention comprises the following steps:
The audio signal S11 produced when step S101, collection auxiliary equipment playing standard audio-visual synchronization signal and vision signal S12, and according to the described audio signal S11 gathered and vision signal S12, obtain the audio-visual synchronization parameter value Δ S1 of described auxiliary equipment;
In the embodiment of the present invention, when device under test such as television set to be measured carries out audio-visual synchronization test, need to introduce the subtest television set being used for this television set to be measured of subtest, the auxiliary equipment namely described in the embodiment of the present invention is as peritelevision machine; In order to improve the accuracy to television set audio-visual synchronization test to be measured, when reality is tested, choose for the machine core board hardware of the peritelevision machine of subtest identical with the machine core board hardware of this television set to be measured, namely the machine core board of peritelevision machine and television set to be measured is the machine core board of same model.
When testing, gather the audio signal S11 and vision signal S12 that produce when Standard Audiovisual synchronizing signal is put in peritelevision machine sowing, read the audio signal S11 that gathers and vision signal S12, and obtain the voltage time delayed difference value of the audio signal S11 that gathers and vision signal S12 at one time on axle respectively; Such as choose in the preset duration t1 time period, the voltage time delayed difference value that audio signal S11 and vision signal S12 is corresponding, the audio-visual synchronization parameter value Δ S1 of this peritelevision machine can be obtained.Wherein, the audio-visual synchronization parameter value Δ S1 of the peritelevision machine calculated is vector value, and namely this audio-visual synchronization parameter value Δ S1 may be positive number, also can be negative; When this audio-visual synchronization parameter value Δ S1 is positive number, represent the t1 moment, the video playback leading audio of this peritelevision machine is play; When this audio-visual synchronization parameter value Δ S1 is negative, represent the t1 moment, the audio frequency of this peritelevision machine is play leads video and is play.
In the present embodiment, the Standard Audiovisual synchronizing signal that peritelevision machine sowing is put is the Standard Audiovisual synchronizing signal that exterior terminal inputs to described peritelevision machine; Such as, the operational order that exterior terminal triggers based on user, inputs to described peritelevision machine by described Standard Audiovisual synchronizing signal.
Step S102, Devices to test record described auxiliary equipment play described Standard Audiovisual synchronizing signal time, gather audio signal S21 and the vision signal S22 of the output of described Devices to test, and according to the described audio signal S21 gathered and vision signal S22, obtain the audio-visual synchronization parameter value Δ S2 of described Devices to test;
While the audio signal S11 produced when gathering peritelevision machine sowing and putting Standard Audiovisual synchronizing signal and vision signal S12, gather audio signal S21 and the vision signal S22 of television set to be measured output.Wherein, the above-mentioned audio signal S21 that the television set to be measured of collection exports and vision signal S22 is: television set to be tested record described peritelevision play described Standard Audiovisual synchronizing signal time, the audio signal that described television set to be measured exports and vision signal.According to the described audio signal S21 gathered and vision signal S22, read the audio signal S21 and vision signal S22 that gather, and obtain the audio signal S21 and the voltage time delayed difference value of vision signal S22 in preset duration that gather, the audio-visual synchronization parameter value Δ S2 of this television set to be measured can be obtained.
In order to the consistency of the audio-visual synchronization parameter value Δ S1 of the audio-visual synchronization parameter value Δ S2 and peritelevision machine that keep television set to be tested, also the accuracy of the audio-visual synchronization parameter value Δ S2 of television set to be tested in order to calculate, when calculating the audio-visual synchronization parameter value Δ S2 of television set to be tested, choose the preset duration identical with the audio frequency and video parameter value Δ S1 calculating peritelevision machine.The voltage time delayed difference value with the audio signal S21 calculated in the same preset duration of audio-visual synchronization parameter value Δ S1 and vision signal S22 is chosen when namely calculating audio-visual synchronization parameter value Δ S2.Therefore, when calculating the audio-visual synchronization parameter value Δ S2 of television set to be measured, obtain respectively vision signal S22 in described preset duration t1 with the voltage time delayed difference value of audio signal S21, obtain the audio-visual synchronization parameter value Δ S2 of this peritelevision machine.Wherein, the audio-visual synchronization parameter value Δ S2 of the peritelevision machine calculated is also vector value, and namely this audio-visual synchronization parameter value Δ S2 may be positive number, also can be negative; When this audio-visual synchronization parameter value Δ S2 is positive number, represent the t1 moment, the video playback leading audio of this peritelevision machine is play; When this audio-visual synchronization parameter value Δ S2 is negative, represent the t1 moment, the audio frequency of this peritelevision machine is play leads video and is play.
In the present embodiment, described television set to be measured possesses the hardware construction needed for recording audio/video on hardware configuration, such as, this television set to be measured possesses camera needed for collection image (as recorded video), possesses the nextport hardware component NextPorts such as microphone needed for collection audio signal (as recording audio).
In concrete test scene, when testing the audio-visual synchronization parameter value of described television set to be measured, the impact in external testing environment and interference is reduced in order to try one's best, the display screen described peritelevision machine being faced described television set to be measured is placed, and the distance of described peritelevision machine and described television set to be measured is set to the predeterminable range needed for recording audio/video, when this predeterminable range can be understood as recording audio/video one preferably positional distance, such as 3 meters.
Step S103, according to the described audio-visual synchronization parameter value Δ S1 obtained and audio-visual synchronization parameter value Δ S2, calculate and obtain the audio-visual synchronization value Δ S of described Devices to test; Wherein, described Δ S=Δ S2-Δ S1.
According to the audio-visual synchronization parameter value Δ S1 of the peritelevision machine obtained, and the audio-visual synchronization parameter value Δ S2 of the television set to be measured obtained, calculate the audio-visual synchronization value Δ S of described television set to be measured; Wherein, the relation of described Δ S and Δ S1 and Δ S2 meets mathematical expression: Δ S=Δ S2-Δ S1.Identify whether the audio-visual synchronization value Δ S of the television set to be measured obtained is 0, or whether described audio-visual synchronization value Δ S levels off to 0 in default error range.It will be appreciated by those skilled in the art that, due to the trueness error between television set hardware and each testing equipment, be difficult to the complete absolute synchronization of accomplishing television set audio-video signal, therefore, allow the audio-visual synchronization value Δ S of the television set to be measured tested out to level off to 0 in described default error range at the present embodiment.Ideally, as Δ S1=Δ S2=0, the audio-visual synchronization performance of this television set to be measured is best.
Differ greatly with 0 when calculating the audio-visual synchronization value Δ S of television set to be measured that obtains beyond described default error range, then need the audio-visual synchronization parameter value Δ S1, the Δ S2 and Δ S that obtain according to above-mentioned calculating, debug television set to be tested, if desired, then debug peritelevision machine simultaneously.
In a preferred embodiment, before the audio-visual synchronization parameter Δ S of test television set to be measured, first peritelevision machine and television set to be measured are debugged, such as, debugged peritelevision machine and the normal audio and video playing of television set to be measured.Certainly, also when testing described television set to be measured, in the lump described peritelevision machine and the normal audio and video playing of television set to be measured can be debugged.
In addition, in the embodiment of the present invention, do not limit the execution sequence of step S101 and step S102, namely step S101 and step S102 can perform simultaneously, also perform step S102 again after can performing step S101, step S102 can certainly be performed again after first step S102.
The audio signal S11 that the embodiment of the present invention produces when gathering auxiliary equipment playing standard audio-visual synchronization signal and vision signal S12, and according to the described audio signal S11 gathered and vision signal S12, obtain the audio-visual synchronization parameter value Δ S1 of described auxiliary equipment; Devices to test record described auxiliary equipment play described Standard Audiovisual synchronizing signal time, gather audio signal S21 and the vision signal S22 of the output of described Devices to test, and according to the described audio signal S21 gathered and vision signal S22, obtain the audio-visual synchronization parameter value Δ S2 of described Devices to test; According to the described audio-visual synchronization parameter value Δ S1 obtained and audio-visual synchronization parameter value Δ S2, calculate the audio-visual synchronization value Δ S of described Devices to test; Wherein, described Δ S=Δ S2-Δ S1; Have the beneficial effect shortening the broadcasting of intelligent TV set sound intermediate frequency and video playback time delay, the shortening effect for the audio frequency and video time delay of television set under voice call is especially remarkable.
Based on the description of embodiment described in Fig. 1, please refer to Fig. 2, Fig. 2 implements audio-visual synchronization method of testing one embodiment application scenarios schematic diagram of the present invention; In the embody rule scene shown in Fig. 2, when gathering the vision signal of television set to be measured and peritelevision machine, realize by light sensation probe, when gathering the audio signal of television set to be measured and peritelevision machine, realize by voltage probe; And the television set to be measured gathered and the audio signal of peritelevision machine and vision signal are shown by general-purpose oscilloscope.
Before starting to test the audio-visual synchronization parameter value Δ S of television set to be measured, hardware required when needing to test is disposed.In the present embodiment, the hardware device tested needed for television set to be measured has optical flame detector and oscilloscope.As shown in Figure 2, corresponding optical flame detector is set respectively on television set to be measured and peritelevision machine, and by the light sensation probe of optical flame detector, the vision signal of the television set to be measured gathered and peritelevision machine is sent to oscilloscope.The interference of external environment during in order to reduce television set recording audio/video to be measured as far as possible, is just being placed on the position of 3 meters, distance peritelevision machine to the display screen of peritelevision machine by television set to be measured.
The operational order that exterior terminal triggers based on tester, to peritelevision machine input Standard Audiovisual synchronizing signal, the described Standard Audiovisual synchronizing signal of input is put in peritelevision machine sowing.Now, the optical flame detector that peritelevision machine is arranged gathers the light signal exported when described Standard Audiovisual synchronizing signal is put in peritelevision machine sowing, and bright for the image of output dark light signal is converted to the signal of telecommunication of level height, and vision signal S12 embodiment described in the signal of telecommunication of collection and Fig. 1 described exports the first passage of oscilloscope A to by light sensation probe, and on the user interface of oscilloscope A, show video waveform corresponding to described vision signal S12 out check for user.Simultaneously, voltage probe is utilized to gather the audio signal S11 exported when described Standard Audiovisual synchronizing signal is put in described peritelevision machine sowing, and the described audio signal S11 gathered is exported to the second channel of oscilloscope A by voltage probe, and be simultaneously displayed on same user interface with the vision signal S12 gathered on the user interface of oscilloscope A, check for tester.
Meanwhile, while described Standard Audiovisual synchronizing signal is put in peritelevision machine sowing, the described Standard Audiovisual synchronizing signal that television set to be measured utilizes camera and the machine sowing of microphone records peritelevision to put; Similarly, the optical flame detector be arranged on television set to be measured gathers the video image that television set to be measured is put by the peritelevision machine sowing that camera is recorded, and bright for the image of collection dark light signal is converted to the signal of telecommunication and Fig. 1 of level height, the vision signal S22 that described embodiment describes exports the first passage of oscilloscope B to by light sensation probe, and on the user interface of oscilloscope B, shows video waveform corresponding to described vision signal S22 out check for user.Simultaneously, voltage probe is utilized to gather the audio signal S21 of described television set recording to be measured, and the described audio signal S21 gathered is exported to the second channel of oscilloscope B by voltage probe, and be simultaneously displayed on same user interface with the vision signal S22 gathered on the user interface of oscilloscope B, check for tester.
The audio volume control that the audio signal S11 of peritelevision machine shown based on oscilloscope A is corresponding and video waveform corresponding to vision signal S12, can obtain the voltage time delayed difference value of audio signal S11 that in section sometime, any instant is corresponding and vision signal S12 easily; Choose the audio signal S11 of peritelevision machine and the voltage time delayed difference value of vision signal S12 in such as t1 duration in section sometime as required, the audio-visual synchronization parameter value Δ S1 of peritelevision machine can be drawn.Same reason, the audio volume control that the audio signal S21 of television set to be measured shown based on oscilloscope B is corresponding and video waveform corresponding to vision signal S22, also can obtain the voltage time delayed difference value of corresponding audio signal S21 and vision signal S22 in section sometime easily; To choose in the preset duration identical with peritelevision machine the audio signal S21 of described television set to be measured and the voltage time delayed difference value of vision signal S22 in such as t1 duration as required, the audio-visual synchronization parameter value Δ S2 of television set to be measured can be drawn.According to the audio-visual synchronization parameter value Δ S1 of peritelevision machine obtained and the audio-visual synchronization parameter value Δ S2 of television set to be measured, draw the audio-visual synchronization parameter value Δ S of television set to be measured.And then according to the described audio-visual synchronization parameter Δ S1, the Δ S2 and Δ S that obtain, the audio-visual synchronization parameter value Δ S of television set to be measured is debugged, makes the audio-visual synchronization value Δ S of described television set to be measured level off to 0 in default error range.Further, according to actual test environment and test request, in order to make the audio-visual synchronization performance of television set to be measured reach optimum degree, Δ S1 and Δ S2 can be debugged, making it meet Δ S1=Δ S2=0.
The embodiment of the present invention is tested television set to be measured by optical flame detector and oscilloscope and peritelevision machine, makes the audio-video signal that gathers more directly perceived, improves efficiency and the convenience of test.
The embodiment of the present invention additionally provides a kind of audio-visual synchronization testing apparatus one embodiment; As shown in Figure 3, audio-visual synchronization testing apparatus of the present invention comprises: signal acquisition module 01 and synchronization value acquisition module 02.
Described signal acquisition module 01 for:
The audio signal S11 produced when gathering auxiliary equipment playing standard audio-visual synchronization signal and vision signal S12, and according to the described audio signal S11 gathered and vision signal S12, obtain the audio-visual synchronization parameter value Δ S1 of described auxiliary equipment; Devices to test record described auxiliary equipment play described Standard Audiovisual synchronizing signal time, gather audio signal S21 and the vision signal S22 of the output of described Devices to test, and according to the described audio signal S21 gathered and vision signal S22, obtain the audio-visual synchronization parameter value Δ S2 of described Devices to test.
In the embodiment of the present invention, when device under test such as television set to be measured carries out audio-visual synchronization test, need to introduce the subtest television set being used for this television set to be measured of subtest, the auxiliary equipment namely described in the embodiment of the present invention is as peritelevision machine; In order to improve the accuracy to television set audio-visual synchronization test to be measured, when reality is tested, choose for the machine core board hardware of the peritelevision machine of subtest identical with the machine core board hardware of this television set to be measured, namely the machine core board of peritelevision machine and television set to be measured is the machine core board of same model.
When testing, signal acquisition module 01 gathers the audio signal S11 and vision signal S12 that produce when Standard Audiovisual synchronizing signal is put in peritelevision machine sowing, read the audio signal S11 that gathers and vision signal S12, and obtain the voltage time delayed difference value of the audio signal S11 that gathers and vision signal S12 at one time on axle respectively; Such as choose in the preset duration t1 time period, the voltage time delayed difference value that audio signal S11 and vision signal S12 is corresponding, the audio-visual synchronization parameter value Δ S1 of this peritelevision machine can be obtained.Wherein, the audio-visual synchronization parameter value Δ S1 of the peritelevision machine that signal acquisition module 01 calculates is vector value, and namely this audio-visual synchronization parameter value Δ S1 may be positive number, also can be negative; When this audio-visual synchronization parameter value Δ S1 is positive number, represent the t1 moment, the video playback leading audio of this peritelevision machine is play; When this audio-visual synchronization parameter value Δ S1 is negative, represent the t1 moment, the audio frequency of this peritelevision machine is play leads video and is play.
In the present embodiment, the Standard Audiovisual synchronizing signal that peritelevision machine sowing is put is the Standard Audiovisual synchronizing signal that exterior terminal inputs to described peritelevision machine; Such as, the operational order that exterior terminal triggers based on user, inputs to described peritelevision machine by described Standard Audiovisual synchronizing signal.
While signal acquisition module 01 gathers the audio signal S11 and vision signal S12 produced when Standard Audiovisual synchronizing signal is put in peritelevision machine sowing, signal acquisition module 01 gathers audio signal S21 and the vision signal S22 of television set to be measured output.Wherein, the above-mentioned audio signal S21 that the television set to be measured that signal acquisition module 01 gathers exports and vision signal S22 is: television set to be tested records described peritelevision when playing described Standard Audiovisual synchronizing signal, the audio signal that described television set to be measured exports and vision signal.According to the described audio signal S21 gathered and vision signal S22, signal acquisition module 01 reads the audio signal S21 and vision signal S22 that gather, and obtain the audio signal S21 and the voltage time delayed difference value of vision signal S22 in preset duration that gather, the audio-visual synchronization parameter value Δ S2 of this television set to be measured can be obtained.
In order to the consistency of the audio-visual synchronization parameter value Δ S1 of the audio-visual synchronization parameter value Δ S2 and peritelevision machine that keep television set to be tested, also the accuracy of the audio-visual synchronization parameter value Δ S2 of television set to be tested in order to calculate, when signal acquisition module 01 calculates the audio-visual synchronization parameter value Δ S2 of television set to be tested, choose the preset duration identical with the audio frequency and video parameter value Δ S1 calculating peritelevision machine.Namely the voltage time delayed difference value with the audio signal S21 calculated in the same preset duration of audio-visual synchronization parameter value Δ S1 and vision signal S22 is chosen when signal acquisition module 01 calculates audio-visual synchronization parameter value Δ S2.Therefore, when calculating the audio-visual synchronization parameter value Δ S2 of television set to be measured, signal acquisition module 01 obtain respectively vision signal S22 in described preset duration t1 with the voltage time delayed difference value of audio signal S21, obtain the audio-visual synchronization parameter value Δ S2 of this peritelevision machine.Wherein, the audio-visual synchronization parameter value Δ S2 of the peritelevision machine that signal acquisition module 01 calculates is also vector value, and namely this audio-visual synchronization parameter value Δ S2 may be positive number, also can be negative; When this audio-visual synchronization parameter value Δ S2 is positive number, represent the t1 moment, the video playback leading audio of this peritelevision machine is play; When this audio-visual synchronization parameter value Δ S2 is negative, represent the t1 moment, the audio frequency of this peritelevision machine is play leads video and is play.
In the present embodiment, described television set to be measured possesses the hardware construction needed for recording audio/video on hardware configuration, such as, this television set to be measured possesses camera needed for collection image (as recorded video), possesses the nextport hardware component NextPorts such as microphone needed for collection audio signal (as recording audio).
In concrete test scene, when testing the audio-visual synchronization parameter value of described television set to be measured, the impact in external testing environment and interference is reduced in order to try one's best, the display screen described peritelevision machine being faced described television set to be measured is placed, and the distance of described peritelevision machine and described television set to be measured is set to the predeterminable range needed for recording audio/video, when this predeterminable range can be understood as recording audio/video one preferably positional distance, such as 3 meters.
Described synchronization value acquisition module 02 for: according to the described audio-visual synchronization parameter value Δ S1 obtained and audio-visual synchronization parameter value Δ S2, calculate and obtain the audio-visual synchronization value Δ S of described Devices to test; Wherein, described Δ S=Δ S2-Δ S1.
According to the audio-visual synchronization parameter value Δ S1 of the peritelevision machine that signal acquisition module 01 obtains, and the audio-visual synchronization parameter value Δ S2 of the television set to be measured obtained, synchronization value acquisition module 02 calculates the audio-visual synchronization value Δ S of described television set to be measured; Wherein, the relation of described Δ S and Δ S1 and Δ S2 meets mathematical expression: Δ S=Δ S2-Δ S1.Synchronization value acquisition module 02 identifies whether the audio-visual synchronization value Δ S of the television set to be measured obtained is 0, or whether described audio-visual synchronization value Δ S levels off to 0 in default error range.It will be appreciated by those skilled in the art that, due to the trueness error between television set hardware and each testing equipment, be difficult to the complete absolute synchronization of accomplishing television set audio-video signal, therefore, allow the audio-visual synchronization value Δ S of the television set to be measured tested out to level off to 0 in described default error range at the present embodiment.Ideally, as Δ S1=Δ S2=0, the audio-visual synchronization performance of this television set to be measured is best.
Differ greatly with 0 when synchronization value acquisition module 02 calculates the audio-visual synchronization value Δ S of television set to be measured that obtains beyond described default error range, then need the audio-visual synchronization parameter value Δ S1, the Δ S2 and Δ S that obtain according to above-mentioned calculating, debug television set to be tested, if desired, then debug peritelevision machine simultaneously.
In a preferred embodiment, before the audio-visual synchronization parameter Δ S of test television set to be measured, first peritelevision machine and television set to be measured are debugged, such as, debugged peritelevision machine and the normal audio and video playing of television set to be measured.Certainly, also when testing described television set to be measured, in the lump described peritelevision machine and the normal audio and video playing of television set to be measured can be debugged.
The audio signal S11 that the embodiment of the present invention produces when gathering auxiliary equipment playing standard audio-visual synchronization signal and vision signal S12, and according to the described audio signal S11 gathered and vision signal S12, obtain the audio-visual synchronization parameter value Δ S1 of described auxiliary equipment; Gather Devices to test and record the audio signal S21 and vision signal S22 that when described auxiliary equipment plays described Standard Audiovisual synchronizing signal, described Devices to test exports, and according to the described audio signal S21 gathered and vision signal S22, obtain the audio-visual synchronization parameter value Δ S2 of described Devices to test; According to the described audio-visual synchronization parameter value Δ S1 obtained and audio-visual synchronization parameter value Δ S2, calculate the audio-visual synchronization value Δ S of described Devices to test; Wherein, described Δ S=Δ S2-Δ S1; Have the beneficial effect shortening the broadcasting of intelligent TV set sound intermediate frequency and video playback time delay, the shortening effect for the audio frequency and video time delay of television set under voice call is especially remarkable.
The description carrying out testing about audio-visual synchronization testing apparatus of the present invention in concrete test scene please refer to the description of embodiment described in Fig. 2, does not repeat them here.
It should be noted that, in this article, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or device and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or device.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the device comprising this key element and also there is other identical element.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
The foregoing is only the preferred embodiments of the present invention; not thereby its scope of the claims is limited; every utilize specification of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; directly or indirectly be used in the technical field that other are relevant, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. an audio-visual synchronization method of testing, is characterized in that, comprises the following steps:
The audio signal S11 produced when gathering auxiliary equipment playing standard audio-visual synchronization signal and vision signal S12, and according to the described audio signal S11 gathered and vision signal S12, obtain the audio-visual synchronization parameter value Δ S1 of described auxiliary equipment;
Devices to test record described auxiliary equipment play described Standard Audiovisual synchronizing signal time, gather audio signal S21 and the vision signal S22 of the output of described Devices to test, and according to the described audio signal S21 gathered and vision signal S22, obtain the audio-visual synchronization parameter value Δ S2 of described Devices to test;
According to the described audio-visual synchronization parameter value Δ S1 obtained and audio-visual synchronization parameter value Δ S2, calculate and obtain the audio-visual synchronization value Δ S of described Devices to test; Wherein, described Δ S=Δ S2-Δ S1.
2. the method for claim 1, it is characterized in that, the audio signal S11 produced during described collection auxiliary equipment playing standard audio-visual synchronization signal and vision signal S12, and according to the described audio signal S11 gathered and vision signal S12, the step obtaining the audio-visual synchronization parameter value Δ S1 of described auxiliary equipment comprises:
When described auxiliary equipment plays the described Standard Audiovisual synchronizing signal of exterior terminal input, utilize optical flame detector that the vision signal that described auxiliary equipment exports is sent to oscillographic first passage, gather described vision signal S12;
While the described vision signal S12 of collection, utilize voltage probe that the audio signal that described auxiliary equipment exports is sent to described oscillographic second channel, gather described audio signal S11;
The audio volume control that the described audio signal S11 simultaneously shown on user interface according to described oscilloscope is corresponding and video waveform corresponding to described vision signal S12, obtain the voltage time delayed difference value of described vision signal S12 and described audio signal S11 in preset duration, obtain the audio-visual synchronization parameter value Δ S1 of described auxiliary equipment.
3. method as claimed in claim 2, it is characterized in that, the vision signal that described auxiliary equipment exports is sent to oscillographic first passage by the described optical flame detector that utilizes, and the step gathering described vision signal S12 comprises:
Utilize described optical flame detector that the light signal of the described video image collected is converted to the signal of telecommunication and the described signal of telecommunication after conversion is sent to oscillographic first passage as vision signal S11, by described oscilloscope, the described vision signal S11 obtained after conversion being shown.
4. the method for claim 1, is characterized in that, described audio-visual synchronization parameter value Δ S2 is the voltage time delayed difference value of described vision signal S22 and described audio signal S21 in preset duration.
5. the method as described in any one of claim 1-4, is characterized in that, described auxiliary equipment is identical with the machine core board hardware of Devices to test.
6. an audio-visual synchronization testing apparatus, is characterized in that, comprises signal acquisition module and synchronization value acquisition module;
Described signal acquisition module is used for:
The audio signal S11 produced when gathering auxiliary equipment playing standard audio-visual synchronization signal and vision signal S12, and according to the described audio signal S11 gathered and vision signal S12, obtain the audio-visual synchronization parameter value Δ S1 of described auxiliary equipment;
Devices to test record described auxiliary equipment play described Standard Audiovisual synchronizing signal time, gather audio signal S21 and the vision signal S22 of the output of described Devices to test, and according to the described audio signal S21 gathered and vision signal S22, obtain the audio-visual synchronization parameter value Δ S2 of described Devices to test;
Described synchronization value acquisition module is used for:
According to the described audio-visual synchronization parameter value Δ S1 obtained and audio-visual synchronization parameter value Δ S2, calculate and obtain the audio-visual synchronization value Δ S of described Devices to test; Wherein, described Δ S=Δ S2-Δ S1.
7. device as claimed in claim 6, is characterized in that, described signal acquisition module also for:
When described auxiliary equipment plays the described Standard Audiovisual synchronizing signal of exterior terminal input, utilize optical flame detector that the vision signal that described auxiliary equipment exports is sent to oscillographic first passage, gather described vision signal S12;
While the described vision signal S12 of collection, utilize voltage probe that the audio signal that described auxiliary equipment exports is sent to described oscillographic second channel, gather described audio signal S11;
The audio volume control that the described audio signal S11 simultaneously shown on user interface according to described oscilloscope is corresponding and video waveform corresponding to described vision signal S12, obtain the voltage time delayed difference value of described vision signal S12 and described audio signal S11 in preset duration, obtain the audio-visual synchronization parameter value Δ S1 of described auxiliary equipment.
8. device as claimed in claim 7, is characterized in that, described signal acquisition module also for:
Utilize described optical flame detector that the light signal of the described video image collected is converted to the signal of telecommunication and the described signal of telecommunication after conversion is sent to oscillographic first passage as vision signal S11, by described oscilloscope, the described vision signal S11 obtained after conversion being shown.
9. device as claimed in claim 6, it is characterized in that, described audio-visual synchronization parameter value Δ S2 is the voltage time delayed difference value of described vision signal S22 and described audio signal S21 in preset duration.
10. the device as described in claim 6-9, is characterized in that, described auxiliary equipment is identical with the machine core board hardware of Devices to test.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105608935A (en) * | 2015-12-29 | 2016-05-25 | 北京奇艺世纪科技有限公司 | Detection method and device of audio and video synchronization |
| CN105657418A (en) * | 2016-01-12 | 2016-06-08 | 深圳市通力科技开发有限公司 | Chrominance subcarrier frequency test method and system for video signal |
| CN105763895A (en) * | 2016-04-15 | 2016-07-13 | 无锡天脉聚源传媒科技有限公司 | Sound processing method, device and system for multi-channel monitoring interface |
| CN106060534A (en) * | 2016-06-03 | 2016-10-26 | 公安部第三研究所 | System and method for testing synchronization of audio and video |
| CN106210842A (en) * | 2016-07-18 | 2016-12-07 | 乐视控股（北京）有限公司 | Control method for playing back and device |
| CN108881992A (en) * | 2018-07-09 | 2018-11-23 | 深圳市潮流网络技术有限公司 | A kind of multimedia audio-video data synchronization calculation method |
| CN109842795A (en) * | 2019-02-28 | 2019-06-04 | 苏州科达科技股份有限公司 | Audio-visual synchronization performance test methods, device, electronic equipment, storage medium |
| CN110446103A (en) * | 2018-05-04 | 2019-11-12 | 腾讯科技（深圳）有限公司 | A kind of phonotape and videotape test method, device and storage medium |
| CN112423074A (en) * | 2020-11-11 | 2021-02-26 | 广州华多网络科技有限公司 | Audio and video synchronization processing method and device, electronic equipment and storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1784024A (en) * | 2004-11-30 | 2006-06-07 | 乐金电子（沈阳）有限公司 | Sound image synchronous detecting method and its device of digital TV receiver |
| WO2007112552A1 (en) * | 2006-03-31 | 2007-10-11 | Leitch Technology International Inc. | Lip synchronization system and method |
| CN101616331A (en) * | 2009-07-27 | 2009-12-30 | 北京汉邦高科数字技术有限公司 | A kind of method that video frame rate and audio-visual synchronization performance are tested |
| CN101742357A (en) * | 2009-12-29 | 2010-06-16 | 北京牡丹电子集团有限责任公司 | Method for measuring audio/video synchronous error of digital television device |
| CN103313089A (en) * | 2012-03-16 | 2013-09-18 | 三洋科技中心(深圳)有限公司 | Lip synchronization detection device and method |
-
2014
- 2014-05-13 CN CN201410201613.1A patent/CN105100794B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1784024A (en) * | 2004-11-30 | 2006-06-07 | 乐金电子（沈阳）有限公司 | Sound image synchronous detecting method and its device of digital TV receiver |
| WO2007112552A1 (en) * | 2006-03-31 | 2007-10-11 | Leitch Technology International Inc. | Lip synchronization system and method |
| CN101616331A (en) * | 2009-07-27 | 2009-12-30 | 北京汉邦高科数字技术有限公司 | A kind of method that video frame rate and audio-visual synchronization performance are tested |
| CN101742357A (en) * | 2009-12-29 | 2010-06-16 | 北京牡丹电子集团有限责任公司 | Method for measuring audio/video synchronous error of digital television device |
| CN103313089A (en) * | 2012-03-16 | 2013-09-18 | 三洋科技中心(深圳)有限公司 | Lip synchronization detection device and method |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105608935A (en) * | 2015-12-29 | 2016-05-25 | 北京奇艺世纪科技有限公司 | Detection method and device of audio and video synchronization |
| CN105657418A (en) * | 2016-01-12 | 2016-06-08 | 深圳市通力科技开发有限公司 | Chrominance subcarrier frequency test method and system for video signal |
| CN105657418B (en) * | 2016-01-12 | 2018-11-16 | 深圳市通力科技开发有限公司 | The chrominance subcarrier frequency test method and system of vision signal |
| CN105763895A (en) * | 2016-04-15 | 2016-07-13 | 无锡天脉聚源传媒科技有限公司 | Sound processing method, device and system for multi-channel monitoring interface |
| CN106060534A (en) * | 2016-06-03 | 2016-10-26 | 公安部第三研究所 | System and method for testing synchronization of audio and video |
| WO2017206935A1 (en) * | 2016-06-03 | 2017-12-07 | 公安部第三研究所 | System and method for audio and video synchronization test |
| CN106210842A (en) * | 2016-07-18 | 2016-12-07 | 乐视控股（北京）有限公司 | Control method for playing back and device |
| CN110446103A (en) * | 2018-05-04 | 2019-11-12 | 腾讯科技（深圳）有限公司 | A kind of phonotape and videotape test method, device and storage medium |
| CN110446103B (en) * | 2018-05-04 | 2021-08-31 | 腾讯科技（深圳）有限公司 | Audio and video testing method and device and storage medium |
| CN108881992A (en) * | 2018-07-09 | 2018-11-23 | 深圳市潮流网络技术有限公司 | A kind of multimedia audio-video data synchronization calculation method |
| CN109842795A (en) * | 2019-02-28 | 2019-06-04 | 苏州科达科技股份有限公司 | Audio-visual synchronization performance test methods, device, electronic equipment, storage medium |
| CN112423074A (en) * | 2020-11-11 | 2021-02-26 | 广州华多网络科技有限公司 | Audio and video synchronization processing method and device, electronic equipment and storage medium |
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