CN110324566A - The test method of sound delay, test device and test equipment in video conference - Google Patents
The test method of sound delay, test device and test equipment in video conference Download PDFInfo
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- H—ELECTRICITY
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Abstract
The present invention relates to data information transfer technical fields, and in particular to test method, test device and the test equipment of sound delay in a kind of video conference.It include: to obtain acoustic network data packet, the voice data includes that information source terminal is sent to the first data packet of processing end and processing end is sent to second data packet at stay of two nights end；The first audio file is extracted from first data packet, extracts the second audio file from second data packet；Acoustic energy identification is carried out to first audio file and the second audio file respectively；To with acoustic energy signal first audio file and the second audio file carry out touch-tone signal identification, record occur the temporal information of identical touch-tone signal in first audio file and the second audio file respectively；Sound delay is calculated according to the time difference of the temporal information recorded.The test method of sound delay has the advantages that the operating process of test is simple in video conference of the present invention.
Description
Technical field
The present invention relates to data information transfer technical fields, and in particular to the test side of sound delay in a kind of video conference
Method, test device and test equipment.
Background technique
Video conferencing system, also known as TV conference system, this refers to the individual or group of two or more different places
Body, by sound, image and document data mutual transmission, realizes the communication immediately and interacted by transmission line and multimedia equipment, with
Realize the system equipment of teleconference.The use of video conference is somewhat like phone, in addition to that can see the people to converse with you and progress
Outside communication, moreover it is possible to which the expression and movement for seeing them make the people in different places just as linking up in same meeting room.
We can bring better video conference to experience referred to as real-time audio and video meeting, lower delay again for video conference,
Each participant can be allowed preferably to experience aspectant exchange.Therefore, delay is a part critically important in video conference, that
It is also particularly important to the test of delay.
Currently, in video conference the test of sound delay be end to end testing scheme, i.e. point-to-point meeting when test
The sound delay of terminal-to-terminal service, when multipoint conference are also the sound delay for testing terminal-to-terminal service.But meeting sound delay
It is shared to be roughly divided into two modules, sound delay shared by sound delay shared by MCU (multipoint control unit) and terminal.The prior art
In, lack the method and apparatus of sound delay shared by test MCU, affect understanding of the related personnel to sound delay shared by MCU,
And the tuning to sound delay.
Summary of the invention
In view of this, the embodiment of the invention provides a kind of test method of sound delay in video conference, and test dress
It sets and test equipment, to solve the problems, such as to lack the test to sound delay shared by multipoint control unit in the prior art.
According in a first aspect, the embodiment of the invention provides a kind of test method of sound delay in video conference, the party
Method include: obtain acoustic network data packet, the voice data include information source terminal be sent to processing end the first data packet and
Processing end is sent to second data packet at stay of two nights end；The first audio file is extracted from first data packet, from described second
The second audio file is extracted in data packet；Acoustic energy knowledge is carried out to first audio file and the second audio file respectively
Not；To with acoustic energy signal first audio file and the second audio file carry out touch-tone signal identification, point
It does not record and occurs the temporal information of identical touch-tone signal in first audio file and the second audio file；According to being remembered
Sound delay is calculated in the time difference of the temporal information of record.
The test method of sound delay in video conference provided by the invention, solves and lacks in the prior art to processing end
The test defect of shared sound delay；Moreover, the application is to first audio file and second for having sound energy signal
Audio file carries out touch-tone signal identification, is not analysis and identification one by one to acoustic network data packet, avoids to noiseless
Time waste when sound energy signal identifies reduces influence of the noise to test result and mentions so that the operating process of test is simple
High data accuracy and testing efficiency.
With reference to first aspect, in first aspect first embodiment, the acoustic network data packet is to pass through the letter
The audio-frequency test sequence signal that source terminal is sent to the stay of two nights end, the touch-tone signal are identified as the audio-frequency test sequence
The corresponding touch-tone signal of column signal.
It can simultaneously obtain the touch-tone signal of the audio-frequency test sequence signal when making audio-frequency test sequence signal,
When reducing the audio signal in one first audio file of selection and the second audio file, need again to the audio signal
Workload when touch-tone signal is analyzed, so that the operating process of test is simpler.
First embodiment with reference to first aspect, in first aspect second embodiment, respectively to first audio
File and the second audio file carry out acoustic energy identification, comprising: judge first audio file and the second audio text respectively
Whether the acoustic energy in part is greater than preset value；When the acoustic energy in first audio file and the second audio file is greater than
When the preset value, judge that there is acoustic energy signal in first audio file and the second audio file.
First embodiment or first aspect second embodiment with reference to first aspect, in first aspect third embodiment
In, touch-tone signal identification is carried out to first audio file for having sound energy signal and the second audio file, comprising:
To with acoustic energy signal first audio file carry out touch-tone signal identification, such as with the audio-frequency test sequence
The corresponding touch-tone signal of signal is corresponding, then records first time information T1；To with described in acoustic energy signal
Second audio signal carries out touch-tone signal identification, and dual-tone multifrequency is believed as described in corresponding with the audio-frequency test sequence signal
Number correspondence, then record the second temporal information T2.
With reference to first aspect or first aspect first embodiment or first aspect second embodiment or first aspect
Three embodiments extract the first audio file from first data packet in the 4th embodiment of first aspect, from described
The second audio file is extracted in second data packet, comprising: solve respectively to first data packet and second data packet
Code is generated with first audio file of duration and the second audio file.
With reference to first aspect or first aspect first embodiment or first aspect second embodiment or first aspect
The 4th embodiment of three embodiments or first aspect, in the 5th embodiment of first aspect, the acquisition acoustic network number
According to packet, comprising: obtain the sound transmitted in processing end in real time according to the address information of the information source terminal and the stay of two nights end
Sound network packet.
According to second aspect, the embodiment of the invention provides a kind of test devices of sound delay in video conference, comprising:
Network receiving module, for obtaining acoustic network data packet, the voice data includes that information source terminal is sent to processing end
One data packet and processing end are sent to second data packet at stay of two nights end；Code stream transmits and receives tool model, is used for from described first
The first audio file is extracted in data packet, extracts the second audio file from second data packet；Acoustic energy identification and letter
Number identification module, for carrying out acoustic energy identification to first audio file and the second audio file respectively；And it is used for
To with acoustic energy signal first audio file and the second audio file carry out touch-tone signal identification, remember respectively
It records and occurs the temporal information of identical touch-tone signal in first audio file and the second audio file；As a result output is calculated
Module, for sound delay to be calculated according to the time difference of the temporal information recorded.
According to the third aspect, the embodiment of the invention provides test equipments, comprising: memory and processor, the storage
Connection is communicated with each other between device and the processor, computer instruction is stored in the memory, the processor is by holding
The row computer instruction, thereby executing video council described in any one of first aspect or first aspect embodiment
The test method of sound delay in view.
It is described computer-readable the embodiment of the invention provides a kind of computer readable storage medium according to fourth aspect
Storage medium is stored with computer instruction, and the computer instruction is for making the computer execute first aspect or first party
The test method of sound delay in video conference described in any one embodiment in face.
Detailed description of the invention
The features and advantages of the present invention will be more clearly understood by referring to the accompanying drawings, and attached drawing is schematically without that should manage
Solution is carries out any restrictions to the present invention, in the accompanying drawings:
Fig. 1 shows application scenarios schematic diagram of the invention；
Fig. 2 shows the flow diagrams of the test method of sound delay in video conference provided in an embodiment of the present invention；
Fig. 3 shows the flow diagram of step S23 in Fig. 2；
Fig. 4 shows the flow diagram of step S24 in Fig. 2；
Fig. 5 shows the structural schematic diagram of the test device of sound delay in the video conference of the embodiment of the present invention；
Fig. 6 shows the structural schematic diagram of the test equipment of the embodiment of the present invention；
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those skilled in the art are not having
Every other embodiment obtained under the premise of creative work is made, shall fall within the protection scope of the present invention.
As shown in Figure 1, being the application scenarios schematic diagram of the embodiment of the present invention.Information source terminal 11 and stay of two nights end 13 are can be with hand
Machine, tablet computer, display etc. have the multimedia terminal of interactive function, are connected between information source terminal 11 and stay of two nights end 13 more
Point control unit 14 connects.The test for supporting sound delay in video conference of the invention is installed on multipoint control unit 14
The sound delay test lead 12 of method.Information source terminal 11 can send sound, multiple spot to multipoint control unit 14 by Ethernet
Control unit 14 can send sound to stay of two nights end 13 by Ethernet, and sound delay test lead 12 can be obtained by Ethernet
The acoustic network data packet of multipoint control unit 14, to detect sound delay shared by multipoint control unit 14.
The test method of sound delay in the video conference of the embodiment of the present invention, as shown in Fig. 2, include,
Step S21, acoustic network data packet is obtained, the voice data includes that information source terminal 11 is sent to multiparty control list
The first data packet and multipoint control unit 14 of member 14 are sent to second data packet at stay of two nights end 13.
The acquisition acoustic network data packet, comprising: believed according to the address at the information source terminal 11 and the stay of two nights end 13
Breath obtains the acoustic network data packet transmitted in multipoint control unit 14 in real time.Obtain in real time is to guarantee obtain the
Include identical audio signal in one data packet and the second data packet, and audio duration it is identical can be convenient it is right in subsequent step
The processing of audio signal.
Step S22, the first audio file is extracted from first data packet, extracts second from second data packet
Audio file；
Step S23, acoustic energy identification is carried out to first audio file and the second audio file respectively；
Step S24, to acoustic energy signal first audio file and the second audio file carry out double-tone it is more
Frequency signal identification records occur the time of identical touch-tone signal in first audio file and the second audio file respectively
Information；
Step S25, sound delay is calculated according to the time difference of the temporal information recorded.
The test method of sound delay in the video conference of the embodiment of the present invention, solves and lacks in the prior art to processing
Hold the test defect of shared sound delay；Moreover, the application is to first audio file for having sound energy signal and
Two audio files carry out touch-tone signal identification, are not analyses and identification one by one to acoustic network data packet, avoid to nothing
Time waste when acoustic energy signal identification, reduces influence of the noise to test result, so that the operating process of test is simple,
Improve data accuracy and testing efficiency.
In the embodiment of the present invention, step S22 extracts the first audio file from first data packet, from described second
The process of the second audio file is extracted in data packet, comprising: carry out respectively to first data packet and second data packet
Decoding, generates with first audio file of duration and the second audio file, with first audio file of duration and the
Two audio files can be convenient the processing in subsequent step to the first audio file and the second audio file.
Optionally, in some embodiments of the invention, as shown in figure 3, above-mentioned steps S23, respectively to first sound
Frequency file and the second audio file carry out the process of acoustic energy identification, specifically include；
Step S231, it is pre- to judge whether the acoustic energy in first audio file and the second audio file is greater than respectively
If value；The preset value may, for example, be the acoustic energy that acoustic energy in audio file is greater than X (dB), the size and sound of preset value
The acoustic energy size of audio signal in sound network packet is related.
Step S232, when the acoustic energy in first audio file and the second audio file is greater than the preset value
When, judge that there is acoustic energy signal in first audio file and the second audio file.
Acoustic energy in first audio file and the second audio file is judged, it is possible to reduce noise is to survey
The influence of test result, so that test result is more accurate.
Optionally, in some embodiments of the invention, as shown in figure 4, above-mentioned steps S24, believes with acoustic energy
Number first audio file and the second audio file carry out touch-tone signal identification process, specifically include:
Step S241, touch-tone signal identification is carried out to first audio file with acoustic energy signal, such as
The touch-tone signal corresponding with the audio-frequency test sequence signal is corresponding, then records first time information T1；
Step S242, touch-tone signal identification is carried out to second audio signal with acoustic energy signal, such as
The touch-tone signal corresponding with the audio-frequency test sequence signal is corresponding, then records the second temporal information T2.
To first audio file and the second audio file progress touch-tone signal with acoustic energy signal
Identification, and the time letter for occurring identical touch-tone signal in first audio file and the second audio file is recorded respectively
Breath, is that two-way carries out touch-tone signal identification respectively, to increase recognition speed.
After having recorded first time information T1 and the second temporal information T2 respectively by step S24, in step S25
In, the sound delay that the time difference that T1 is obtained is multipoint control unit 14 is subtracted with T2.
In the embodiment of the present invention, acoustic energy signal and the double identifications of touch-tone signal are carried out, can effectively have been evaded
Influence (influence that such as acoustic energy reduce) of the acoustic processing function to sound, evades presumable in multipoint control unit 14
The introducing of other non-test sound is judged by accident, so that test result is more accurate.
In actual application scenarios, the type of audio signal is relatively more, if using common when sound delay is tested
Audio signal, then the acoustic network data packet measured includes common audio signal, it is also necessary to the acoustic network data packet
The common audio file of middle extraction carries out touch-tone signal identification, can biggish increase workload.Therefore, the embodiment of the present invention
In, the acoustic network data packet can select the audio-frequency test sequence sent by the information source terminal 11 to the stay of two nights end 13
Column signal, the audio-frequency test sequence signal refer to special audio-frequency test sequence, and pulse-code modulation recording substance is in audio file
Single arbitrary content, energy value 0dB, the sampled voice time presets and T (ms), and with T (ms) for interval acquiring pulse-code modulation
Touch-tone signal in recording, the touch-tone signal is in subsequent step.That is, being believed using the dual-tone multifrequency
Number, it can reduce and touch-tone signal identification is carried out to the common audio file extracted in acoustic network data packet, so that test
Operating process it is simple, improve data accuracy and testing efficiency.
The embodiment of the invention also provides a kind of test devices of sound delay in video conference, as shown in Figure 5, comprising:
Network receiving module 31, for obtaining acoustic network data packet, the voice data includes that information source terminal 11 is sent
Second data packet at stay of two nights end 13 is sent to the first data packet and multipoint control unit 14 of multipoint control unit 14；In in detail
Hold the associated description that may refer to the step S21 of above-mentioned any means embodiment.
Code stream transmits and receives tool model 32, for extracting the first audio file from first data packet, from described
The second audio file is extracted in second data packet；Detailed content may refer to the phase of the step S22 of above-mentioned any means embodiment
Close description.
Acoustic energy identification and signal identification module 33, for respectively to first audio file and the second audio file
Carry out acoustic energy identification；And for acoustic energy signal first audio file and the second audio file into
The identification of row touch-tone signal records occur identical dual-tone multifrequency letter in first audio file and the second audio file respectively
Number temporal information；Detailed content may refer to the associated description of the step S23 and S24 of above-mentioned any means embodiment.
As a result output module 34 is calculated, for sound delay to be calculated according to the time difference of the temporal information recorded；
Detailed content may refer to the associated description of the step S25 of above-mentioned any means embodiment.
The test device of sound delay in the video conference of the embodiment of the present invention, solves and lacks in the prior art to processing
Hold the test defect of shared sound delay；Moreover, the application is to first audio file for having sound energy signal and
Two audio files carry out touch-tone signal identification, are not analyses and identification one by one to acoustic network data packet, avoid to nothing
Time waste when acoustic energy signal identification, reduces influence of the noise to test result, so that the operating process of test is simple,
Improve data accuracy and testing efficiency.
The embodiment of the invention also provides a kind of test equipments, as shown in fig. 6, the test equipment may include processor 41
With memory 42, wherein processor 41 can be connected with memory 42 by bus or other modes, to pass through bus in Fig. 6
For connection.
Processor 41 can be central processing unit (CentralProcessingUnit, CPU).Processor 41 can also be
Other general processors, digital signal processor (DigitalSignalProcessor, DSP), specific integrated circuit (Appli
CationSpecificIntegratedCircuit, ASIC), field programmable gate array (Field-
ProgrammableGateArray, FPGA) either other programmable logic device, discrete gate or transistor logic, point
The combination of the chips such as vertical hardware component or above-mentioned all kinds of chips.
Memory 42 is used as a kind of non-transient computer readable storage medium, can be used for storing non-transient software program, non-
Transient computer executable program and module, as in the embodiment of the present invention in video conference sound delay test device.Place
Non-transient software program, instruction and the module that reason device 41 is stored in memory 42 by operation, thereby executing processor
Various function application and data processing, i.e., the test side of sound delay in the video conference in realization above method embodiment
Method.
Memory 42 may include storing program area and storage data area, wherein storing program area can storage program area,
Application program required at least one function；It storage data area can the data etc. that are created of storage processor 41.In addition, storage
Device 42 may include high-speed random access memory, can also include non-transient memory, for example, at least a magnetic disk storage
Part, flush memory device or other non-transient solid-state memories.In some embodiments, it includes relative to place that memory 42 is optional
The remotely located memory of device 41 is managed, these remote memories can pass through network connection to processor 41.The reality of above-mentioned network
Example includes but is not limited to internet, intranet, local area network, mobile radio communication and combinations thereof.
One or more of modules are stored in the memory 42, when being executed by the processor 41, are executed
The test method of sound delay in video conference in embodiment as in Figure 2-4.
Above-mentioned test equipment detail can correspond to corresponding associated description in embodiment referring to FIG. 1 to 5
Understood with effect, details are not described herein again.
It is that can lead to it will be understood by those skilled in the art that realizing all or part of the process in above-described embodiment method
Computer program is crossed to instruct relevant hardware and complete, the program can be stored in a computer-readable storage medium
In, the program is when being executed, it may include such as the process of the embodiment of above-mentioned each method.Wherein, the storage medium can for magnetic disk,
CD, read-only memory (Read-Only Memory, ROM), random access memory (Random Access
Memory, RAM), flash memory (Flash Memory), hard disk (Hard Disk Drive, abbreviation: HDD) or solid state hard disk
(Solid-State Drive, SSD) etc.；The storage medium can also include the combination of the memory of mentioned kind.
Although being described in conjunction with the accompanying the embodiment of the present invention, those skilled in the art can not depart from the present invention
Spirit and scope in the case where various modifications and variations can be made, such modifications and variations are each fallen within by appended claims institute
Within the scope of restriction.
Claims (9)
1. the test method of sound delay in a kind of video conference characterized by comprising
Acoustic network data packet is obtained, the voice data includes the first data packet and processing that information source terminal is sent to processing end
End is sent to second data packet at stay of two nights end；
The first audio file is extracted from first data packet, extracts the second audio file from second data packet；
Acoustic energy identification is carried out to first audio file and the second audio file respectively；
To with acoustic energy signal first audio file and the second audio file carry out touch-tone signal identification, point
It does not record and occurs the temporal information of identical touch-tone signal in first audio file and the second audio file；
Sound delay is calculated according to the time difference of the temporal information recorded.
2. the method as described in claim 1, which is characterized in that the acoustic network data packet be by the information source terminal to
The audio-frequency test sequence signal that the stay of two nights end is sent, the touch-tone signal are identified as the audio-frequency test sequence signal pair
The touch-tone signal answered.
3. method according to claim 2, which is characterized in that respectively to first audio file and the second audio file into
The identification of row acoustic energy, comprising:
Judge whether the acoustic energy in first audio file and the second audio file is greater than preset value respectively；
When the acoustic energy in first audio file and the second audio file is greater than the preset value, described first is judged
There is acoustic energy signal in audio file and the second audio file.
4. method as claimed in claim 2 or claim 3, which is characterized in that first audio file for having sound energy signal
Touch-tone signal identification is carried out with the second audio file, comprising:
To with acoustic energy signal first audio file carry out touch-tone signal identification, such as with the audio-frequency test
The corresponding touch-tone signal of sequence signal is corresponding, then records first time information T1；
To with acoustic energy signal second audio signal carry out touch-tone signal identification, such as with the audio-frequency test
The corresponding touch-tone signal of sequence signal is corresponding, then records the second temporal information T2.
5. such as method of any of claims 1-4, which is characterized in that extract first from first data packet
Audio file extracts the second audio file from second data packet, comprising:
First data packet and second data packet are decoded respectively, generate first audio file with duration
With the second audio file.
6. method according to any one of claims 1 to 5, which is characterized in that the acquisition acoustic network data packet, packet
It includes:
The acoustic network transmitted in processing end is obtained in real time according to the address information of the information source terminal and the stay of two nights end
Data packet.
7. the test device of sound delay in a kind of video conference characterized by comprising
Network receiving module, for obtaining acoustic network data packet, the voice data includes that information source terminal is sent to processing end
The first data packet and processing end be sent to second data packet at stay of two nights end；
Code stream transmits and receives tool model, for extracting the first audio file from first data packet, from second number
According to extracting the second audio file in packet；
Acoustic energy identification and signal identification module, for respectively to first audio file and the second audio file carry out sound
Sound Thin interbed；And for first audio file and the second audio file progress double-tone with acoustic energy signal
Multiple-frequency signal identification, record respectively occur in first audio file and the second audio file identical touch-tone signal when
Between information；
As a result output module is calculated, for sound delay to be calculated according to the time difference of the temporal information recorded.
8. a kind of test equipment characterized by comprising
Memory and processor communicate with each other connection, are stored in the memory between the memory and the processor
Computer instruction, the processor is by executing the computer instruction, thereby executing any one of such as claim 1-6 institute
The test method of sound delay in the video conference stated.
9. a kind of computer readable storage medium, which is characterized in that the computer-readable recording medium storage has computer to refer to
It enables, the computer instruction is for executing the computer such as sound in video conference of any of claims 1-6
The test method of sound delay.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111355995A (en) * | 2020-03-03 | 2020-06-30 | 北京字节跳动网络技术有限公司 | Method and device for determining sound delay time of Bluetooth device and terminal device |
| CN112489686A (en) * | 2020-12-02 | 2021-03-12 | 公安部第三研究所 | End-to-end audio signal delay testing method |
| CN112995781A (en) * | 2021-04-27 | 2021-06-18 | 南斗六星系统集成有限公司 | Method and system for determining audio and video delay in real-time video |
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