CN110324566B - Method, device and equipment for testing sound delay in video conference - Google Patents
Method, device and equipment for testing sound delay in video conference Download PDFInfo
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- CN110324566B CN110324566B CN201910607463.7A CN201910607463A CN110324566B CN 110324566 B CN110324566 B CN 110324566B CN 201910607463 A CN201910607463 A CN 201910607463A CN 110324566 B CN110324566 B CN 110324566B
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/78—Detection of presence or absence of voice signals
- G10L25/84—Detection of presence or absence of voice signals for discriminating voice from noise
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0852—Delays
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/15—Conference systems
Abstract
The invention relates to the technical field of data information transmission, in particular to a method, a device and equipment for testing sound delay in a video conference. The method comprises the following steps: acquiring a voice network data packet, wherein the voice network data comprises a first data packet sent to a multipoint control unit by an information source terminal and a second data packet sent to a destination terminal by the multipoint control unit; extracting a first audio file from the first data packet and extracting a second audio file from the second data packet; respectively carrying out sound energy identification on the first audio file and the second audio file; carrying out dual-tone multi-frequency signal identification on the first audio file and the second audio file with sound energy signals, and respectively recording time information of the same dual-tone multi-frequency signals appearing in the first audio file and the second audio file; and calculating the sound time delay according to the time difference of the recorded time information. The method for testing the sound delay in the video conference has the advantage of simple operation flow of testing.
Description
Technical Field
The invention relates to the technical field of data information transmission, in particular to a method, a device and equipment for testing sound delay in a video conference.
Background
A video conference system, also called a video conference system, refers to a system device for realizing a teleconference by transmitting audio, video and file data to each other through a transmission line and multimedia devices by individuals or groups in two or more different places, so as to realize real-time and interactive communication. The video conference is used just like a telephone, and people who talk with the video conference can be seen and communicate with the video conference in language, and the expressions and actions of the people can be seen, so that people in different places can communicate in the same conference room. The video conference can be called as a real-time audio and video conference, the lower time delay can bring better video conference experience, and each participant can better experience face-to-face communication. Therefore, the delay is an important part of the video conference, and the test of the delay is also important.
At present, the test of the sound delay in the video conference is an end-to-end test scheme, that is, the sound delay from a test terminal to a terminal in a point-to-point conference is tested, and the sound delay from the test terminal to the terminal in a multipoint conference is also tested. However, the conference sound delay is roughly divided into two modules, a sound delay occupied by an MCU (multipoint control unit) and a sound delay occupied by a terminal. In the prior art, a method and a device for testing the sound delay occupied by the MCU are lacked, so that the understanding of related personnel on the sound delay occupied by the MCU and the tuning of the sound delay are influenced.
Disclosure of Invention
In view of this, embodiments of the present invention provide a method, a device and a device for testing sound delay in a video conference, so as to solve the problem that the prior art lacks a test for sound delay occupied by a multipoint control unit.
According to a first aspect, an embodiment of the present invention provides a method for testing sound delay in a video conference, where the method includes: acquiring a voice network data packet, wherein the voice network data comprises a first data packet sent to a multipoint control unit by an information source terminal and a second data packet sent to a destination terminal by the multipoint control unit; extracting a first audio file from the first data packet and extracting a second audio file from the second data packet; respectively carrying out sound energy identification on the first audio file and the second audio file; carrying out dual-tone multi-frequency signal identification on the first audio file and the second audio file with sound energy signals, and respectively recording time information of the same dual-tone multi-frequency signals appearing in the first audio file and the second audio file; and calculating the sound time delay according to the time difference of the recorded time information.
The method for testing the sound delay in the video conference solves the defect that the sound delay occupied by the multipoint control unit is lack in the prior art; moreover, this application is to having sound energy signal first audio file and second audio file carry out dual-tone multifrequency signal identification, and not to sound network data packet analysis and discernment one by one, the time waste when avoiding not having sound energy signal identification, noise abatement is to the influence of test result for the operation flow of test is simple, has improved data accuracy and efficiency of software testing.
With reference to the first aspect, in a first implementation manner of the first aspect, the voice network packet is an audio test sequence signal sent to the sink terminal by the source terminal, and the dual tone multi-frequency signal is identified as the dual tone multi-frequency signal corresponding to the audio test sequence signal.
The dual-tone multi-frequency signals of the audio test sequence signals can be obtained simultaneously when the audio test sequence signals are manufactured, the workload when the dual-tone multi-frequency signals of the audio signals need to be analyzed when one audio signal in the first audio file and the second audio file is selected is reduced, and the operation flow of the test is simpler.
With reference to the first implementation manner of the first aspect, in a second implementation manner of the first aspect, the performing sound energy recognition on the first audio file and the second audio file respectively includes: respectively judging whether the sound energy in the first audio file and the second audio file is greater than a preset value; and when the sound energy in the first audio file and the second audio file is larger than the preset value, judging that sound energy signals exist in the first audio file and the second audio file.
With reference to the first implementation manner of the first aspect or the second implementation manner of the first aspect, in a third implementation manner of the first aspect, performing dual tone multi-frequency signal identification on the first audio file and the second audio file having sound energy signals includes: performing dual tone multi-frequency signal identification on the first audio file with the sound energy signal, and recording first time information T1 if the dual tone multi-frequency signal corresponding to the audio test sequence signal corresponds to the first audio file; performing dual tone multi-frequency signal recognition on the second audio signal having the sound energy signal, and recording second time information T2 if the dual tone multi-frequency signal corresponds to the audio test sequence signal.
With reference to the first aspect, the first implementation manner of the first aspect, the second implementation manner of the first aspect, or the third implementation manner of the first aspect, in a fourth implementation manner of the first aspect, the extracting a first audio file from the first data packet, and extracting a second audio file from the second data packet includes: and respectively decoding the first data packet and the second data packet to generate the first audio file and the second audio file with the same time length.
With reference to the first aspect, or the first aspect first implementation manner, or the first aspect second implementation manner, or the first aspect third implementation manner, or the first aspect fourth implementation manner, in a fifth implementation manner of the first aspect, the acquiring a voice network packet includes: and acquiring the voice network data packet transmitted in the multi-point control unit in real time according to the address information of the information source terminal and the information sink terminal.
According to a second aspect, an embodiment of the present invention provides a device for testing a sound delay in a video conference, including: the network receiving module is used for acquiring a sound network data packet, wherein the sound network data packet comprises a first data packet sent to the multipoint control unit by the information source terminal and a second data packet sent to the information destination terminal by the multipoint control unit; the code stream transmitting and receiving tool module is used for extracting a first audio file from the first data packet and extracting a second audio file from the second data packet; the sound energy identification and signal identification module is used for respectively carrying out sound energy identification on the first audio file and the second audio file; the time information recording device is used for carrying out dual-tone multi-frequency signal identification on the first audio file and the second audio file with sound energy signals and respectively recording the time information of the same dual-tone multi-frequency signals appearing in the first audio file and the second audio file; and the result calculation output module is used for calculating the sound delay according to the time difference of the recorded time information.
According to a third aspect, embodiments of the present invention provide a test apparatus, comprising: a memory and a processor, the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the computer instructions to execute the method for testing the sound delay in the video conference according to the first aspect or any one of the embodiments of the first aspect.
According to a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, where computer instructions are stored, and the computer instructions are configured to cause the computer to execute the method for testing sound delay in a video conference described in the first aspect or any one of the implementation manners of the first aspect.
Drawings
The features and advantages of the present invention will be more clearly understood by reference to the accompanying drawings, which are illustrative and not to be construed as limiting the invention in any way, and in which:
FIG. 1 illustrates a schematic diagram of an application scenario of the present invention;
fig. 2 is a schematic flowchart illustrating a method for testing sound delay in a video conference according to an embodiment of the present invention;
FIG. 3 shows a schematic flow chart of step S23 in FIG. 2;
FIG. 4 shows a schematic flow chart of step S24 in FIG. 2;
fig. 5 is a schematic structural diagram illustrating a device for testing sound delay in a video conference according to an embodiment of the present invention;
FIG. 6 shows a schematic structural diagram of a test apparatus of an embodiment of the present invention;
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic view of an application scenario according to an embodiment of the present invention. The source terminal 11 and the sink terminal 13 are multimedia terminals with interactive functions such as mobile phones, tablet computers, displays and the like, and the multipoint control unit 14 is connected between the source terminal 11 and the sink terminal 13. The sound delay test terminal 12 supporting the sound delay test method in the video conference of the present invention is installed on the multipoint control unit 14. The source terminal 11 may send a sound to the multipoint control unit 14 through the ethernet, the multipoint control unit 14 may send a sound to the sink terminal 13 through the ethernet, and the sound delay testing terminal 12 may obtain a sound network data packet of the multipoint control unit 14 through the ethernet to detect a sound delay occupied by the multipoint control unit 14.
The method for testing the sound delay in the video conference, as shown in fig. 2, includes,
step S21, obtaining the voice network data packet, where the voice network data includes a first data packet sent by the source terminal 11 to the multipoint control unit 14 and a second data packet sent by the multipoint control unit 14 to the destination terminal 13.
The acquiring of the voice network data packet includes: and acquiring the voice network data packet transmitted in the multipoint control unit 14 in real time according to the address information of the information source terminal 11 and the information sink terminal 13. The real-time acquisition is to ensure that the acquired first data packet and the acquired second data packet contain the same audio signal, and the audio duration is the same, so that the audio signal can be conveniently processed in the subsequent steps.
Step S22, extracting a first audio file from the first data packet, and extracting a second audio file from the second data packet;
step S23, respectively carrying out sound energy recognition on the first audio file and the second audio file;
step S24, performing dual-tone multi-frequency signal identification on the first audio file and the second audio file with sound energy signals, and respectively recording time information of the same dual-tone multi-frequency signals appearing in the first audio file and the second audio file;
and step S25, calculating the sound time delay according to the time difference of the recorded time information.
The method for testing the sound delay in the video conference solves the defect that the sound delay occupied by the multipoint control unit 14 is lack of testing in the prior art; moreover, this application is to having sound energy signal first audio file and second audio file carry out dual-tone multifrequency signal identification, and not to sound network data packet analysis and discernment one by one, the time waste when avoiding not having sound energy signal identification, noise abatement is to the influence of test result for the operation flow of test is simple, has improved data accuracy and efficiency of software testing.
In this embodiment of the present invention, in step S22, the process of extracting a first audio file from the first data packet and extracting a second audio file from the second data packet includes: and decoding the first data packet and the second data packet respectively to generate the first audio file and the second audio file with the same time length, wherein the first audio file and the second audio file with the same time length can facilitate the processing of the first audio file and the second audio file in the subsequent steps.
Optionally, in some embodiments of the present invention, as shown in fig. 3, the step S23 includes performing a sound energy recognition process on the first audio file and the second audio file, respectively;
step S231, respectively judging whether the sound energy in the first audio file and the second audio file is greater than a preset value; the preset value may be, for example, a sound energy in the audio file greater than x (db), and the size of the preset value is related to the sound energy of the audio signal in the audio network packet.
Step S232, when the sound energy in the first audio file and the second audio file is greater than the preset value, determining that there is a sound energy signal in the first audio file and the second audio file.
And judging the sound energy in the first audio file and the second audio file, so that the influence of noise on the test result can be reduced, and the test result is more accurate.
Optionally, in some embodiments of the present invention, as shown in fig. 4, in the step S24, the process of performing dual tone multi-frequency signal identification on the first audio file and the second audio file having sound energy signals specifically includes:
step S241, performing dual tone multi-frequency signal identification on the first audio file having a sound energy signal, and if the dual tone multi-frequency signal corresponds to the audio test sequence signal, recording first time information T1;
step S242, performing dual tone multi-frequency signal identification on the second audio signal with sound energy signal, and recording second time information T2 if the dual tone multi-frequency signal corresponding to the audio test sequence signal corresponds to the second audio signal with sound energy signal.
The method comprises the steps of carrying out dual-tone multi-frequency signal identification on a first audio file and a second audio file with sound energy signals, respectively recording time information of the same dual-tone multi-frequency signals appearing in the first audio file and the second audio file, and respectively carrying out dual-tone multi-frequency signal identification on two paths of audio files so as to increase the identification speed.
After the first time information T1 and the second time information T2 are recorded in step S24, respectively, the time difference obtained by subtracting T1 from T2 is the sound delay of the multipoint control unit 14 in step S25.
In the embodiment of the invention, the dual recognition of the sound energy signal and the dual-tone multi-frequency signal is carried out, so that the influence (such as the influence of sound energy reduction) of the sound processing function in the multi-point control unit 14 on the sound can be effectively avoided, and the possible introduction misjudgment of other non-test sounds is avoided, so that the test result is more accurate.
In an actual application scenario, the types of audio signals are more, and if a common audio signal is used in the sound delay test, the measured sound network data packet includes the common audio signal, and the dual-tone multi-frequency signal identification needs to be performed on a common audio file extracted from the sound network data packet, which may greatly increase the workload. Therefore, in the embodiment of the present invention, the audio network data packet may select an audio test sequence signal sent to the destination 13 through the source terminal 11, where the audio test sequence signal is a specific audio test sequence, the content of the pulse code modulation recording in the audio file is a single arbitrary content, the energy value is 0dB, the sound sampling time is preset to t (ms), and the dual tone multi-frequency signal in the pulse code modulation recording is obtained at an interval of t (ms), and is used in the subsequent step. That is to say, the dual-tone multi-frequency signal is used, so that the identification of the dual-tone multi-frequency signal for the common audio files extracted from the sound network data packet can be reduced, the operation flow of the test is simple, and the data accuracy and the test efficiency are improved.
An embodiment of the present invention further provides a device for testing sound delay in a video conference, as shown in fig. 5, including:
the network receiving module 31 is configured to obtain a voice network data packet, where the voice network data includes a first data packet sent by the source terminal 11 to the multipoint control unit 14 and a second data packet sent by the multipoint control unit 14 to the destination terminal 13; details may be found in relation to step S21 of any of the above-described method embodiments.
A code stream transmitting and receiving tool module 32, configured to extract a first audio file from the first data packet, and extract a second audio file from the second data packet; details may be found in relation to step S22 of any of the above-described method embodiments.
A sound energy identification and signal identification module 33, configured to perform sound energy identification on the first audio file and the second audio file, respectively; the time information recording device is used for carrying out dual-tone multi-frequency signal identification on the first audio file and the second audio file with sound energy signals and respectively recording the time information of the same dual-tone multi-frequency signals appearing in the first audio file and the second audio file; for details, reference may be made to the description relating to steps S23 and S24 of any of the above-described method embodiments.
A result calculation output module 34, configured to calculate a sound delay according to the time difference of the recorded time information; details may be found in relation to step S25 of any of the above-described method embodiments.
The sound delay testing device in the video conference of the embodiment of the invention solves the defect that the sound delay occupied by the multipoint control unit 14 is lack of testing in the prior art; moreover, this application is to having sound energy signal first audio file and second audio file carry out dual-tone multifrequency signal identification, and not to sound network data packet analysis and discernment one by one, the time waste when avoiding not having sound energy signal identification, noise abatement is to the influence of test result for the operation flow of test is simple, has improved data accuracy and efficiency of software testing.
An embodiment of the present invention further provides a testing apparatus, as shown in fig. 6, the testing apparatus may include a processor 41 and a memory 42, where the processor 41 and the memory 42 may be connected by a bus or in another manner, and fig. 6 illustrates the connection by the bus as an example.
The processor 41 may be a Central Processing Unit (CPU). The Processor 41 may also be other general purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components, or combinations thereof.
The memory 42 is a non-transitory computer readable storage medium, and can be used to store non-transitory software programs, non-transitory computer executable programs, and modules, such as the device for testing the sound delay in a video conference according to the embodiment of the present invention. The processor 41 executes various functional applications and data processing of the processor by running the non-transitory software programs, instructions and modules stored in the memory 42, namely, the method for testing the sound delay in the video conference in the above-described method embodiment.
The memory 42 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created by the processor 41, and the like. Further, the memory 42 may include high speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid state storage device. In some embodiments, memory 42 may optionally include memory located remotely from processor 41, which may be connected to processor 41 via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The one or more modules are stored in the memory 42 and when executed by the processor 41 perform a method of testing for sound delay in a video conference as in the embodiment of fig. 2-4.
The details of the testing device may be understood by referring to the corresponding descriptions and effects in the embodiments shown in fig. 1 to fig. 5, which are not described herein again.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic Disk, an optical Disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a Flash Memory (Flash Memory), a Hard Disk (Hard Disk Drive, abbreviated as HDD), a Solid State Drive (SSD), or the like; the storage medium may also comprise a combination of memories of the kind described above.
Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope defined by the appended claims.
Claims (8)
1. A method for testing sound delay in a video conference is characterized by comprising the following steps:
acquiring a sound network data packet, wherein the sound network data packet is an audio test sequence signal sent to the sink terminal through the information source terminal, and comprises a first data packet sent to a multipoint control unit (14) by the information source terminal and a second data packet sent to the sink terminal by the multipoint control unit (14);
extracting a first audio file from the first data packet and extracting a second audio file from the second data packet;
respectively carrying out sound energy identification on the first audio file and the second audio file;
identifying the dual-tone multi-frequency signals corresponding to the audio test sequence signals for the first audio file and the second audio file with sound energy signals, and respectively recording the time information of the same dual-tone multi-frequency signals appearing in the first audio file and the second audio file;
and calculating the sound time delay according to the time difference of the recorded time information.
2. The method of claim 1, wherein performing sound energy recognition on the first audio file and the second audio file, respectively, comprises:
respectively judging whether the sound energy in the first audio file and the second audio file is greater than a preset value;
and when the sound energy in the first audio file and the second audio file is larger than the preset value, judging that sound energy signals exist in the first audio file and the second audio file.
3. The method of claim 1 or 2, wherein dual tone multi frequency signal identification of the first and second audio files having a sound energy signal comprises:
performing dual tone multi-frequency signal identification on the first audio file with the sound energy signal, and recording first time information T1 if the dual tone multi-frequency signal corresponding to the audio test sequence signal corresponds to the first audio file;
performing dual tone multi-frequency signal recognition on the second audio signal having the sound energy signal, and recording second time information T2 if the dual tone multi-frequency signal corresponds to the audio test sequence signal.
4. The method of claim 1 or 2, wherein extracting a first audio file from the first data packet and a second audio file from the second data packet comprises:
and respectively decoding the first data packet and the second data packet to generate the first audio file and the second audio file with the same time length.
5. The method of claim 1 or 2, wherein said obtaining a voice network packet comprises:
and acquiring the voice network data packet transmitted in the multipoint control unit (14) in real time according to the address information of the information source terminal and the information sink terminal.
6. A device for testing sound delay in video conference is characterized by comprising:
the network receiving module is used for acquiring a sound network data packet, wherein the sound network data packet is an audio test sequence signal sent to the information sink terminal through the information source terminal, and comprises a first data packet sent to the multipoint control unit (14) by the information source terminal and a second data packet sent to the information sink terminal by the multipoint control unit (14);
the code stream transmitting and receiving tool module is used for extracting a first audio file from the first data packet and extracting a second audio file from the second data packet;
the sound energy identification and signal identification module is used for respectively carrying out sound energy identification on the first audio file and the second audio file; the dual-tone multi-frequency signal identification device is used for identifying dual-tone multi-frequency signals corresponding to the audio test sequence signals of the first audio file and the second audio file with sound energy signals and respectively recording time information of the same dual-tone multi-frequency signals appearing in the first audio file and the second audio file;
and the result calculation output module is used for calculating the sound delay according to the time difference of the recorded time information.
7. A test apparatus, comprising:
a memory and a processor, the memory and the processor being communicatively connected to each other, the memory storing therein computer instructions, and the processor executing the computer instructions to perform the method for testing sound delay in a video conference according to any one of claims 1 to 5.
8. A computer-readable storage medium storing computer instructions for causing a computer to execute the method for testing sound delay in a video conference according to any one of claims 1 to 5.
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| CN112489686A (en) * | 2020-12-02 | 2021-03-12 | 公安部第三研究所 | End-to-end audio signal delay testing method |
| CN112995781B (en) * | 2021-04-27 | 2021-08-13 | 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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