CN112489686A - End-to-end audio signal delay testing method - Google Patents
End-to-end audio signal delay testing method Download PDFInfo
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- CN112489686A CN112489686A CN202011394751.8A CN202011394751A CN112489686A CN 112489686 A CN112489686 A CN 112489686A CN 202011394751 A CN202011394751 A CN 202011394751A CN 112489686 A CN112489686 A CN 112489686A
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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
- G10L25/48—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use
- G10L25/51—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use for comparison or discrimination
- G10L25/60—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use for comparison or discrimination for measuring the quality of voice signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/364—Delay profiles
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q5/00—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange
- H04Q5/24—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange for two-party-line systems
Abstract
The invention relates to the technical field of audio test, in particular to an end-to-end audio signal delay test method, a first terminal sends first audio information through a first audio signal generator, a first conversion device converts the first audio information into a first continuous sound test signal and then sends the first continuous sound test signal to a second conversion device through a system network, the first continuous sound test signal is transmitted through the system network and the second conversion device to obtain a second continuous sound test signal, a second microphone arranged at the second terminal obtains the second continuous sound test signal, an audio analyzer arranged at the second terminal compares the first continuous sound test signal and the second continuous sound test signal to obtain the delay passing between the first continuous sound test signal and the second continuous sound test signal, the technical scheme effectively tests and obtains the delay information of the audio signal, the method is simple and easy to implement, the efficiency is high, and the first audio signal generator is used as an analog device, so that the stability and the reliability are high.
Description
Technical Field
The invention relates to the technical field of audio test, in particular to an end-to-end audio signal delay test method.
Background
At present, there are many digital end-to-end devices without standard interfaces or non-standard transmission protocols or adopting encryption technology, and the existing electroacoustic test method can not carry out effective test and can only adopt end-to-end whole-course acoustic signal test. The house security technology guard product building intercom system is taken as an example, and due to the fact that a transmission protocol is nonstandard and an interface is nonstandard, testing of voice quality can only be conducted through whole-course acoustic testing. For example, when a visitor calling machine end at a building door presses a house number, a host takes off a microphone of a user receiver at home or can talk with a guest in a hands-free mode, in the process, the delay of sound wave signals is not avoided, audio signals sent by the guest need to be converted into digital signals for transmission, the digital signals need to be converted into sound (audio) signals before the host hears the sound (audio) signals, a certain delay is necessarily generated between the conversion of the digital signals and the sound (audio) signals, and the test of the delay becomes a focus.
Therefore, how to efficiently test the delay of the audio signal becomes a big problem for those skilled in the art.
Disclosure of Invention
In view of the above problems, the present invention provides an end-to-end audio signal delay testing method to solve the problem of efficiently testing the delay of an audio signal based on echo suppression of a communication signal.
According to an aspect of the present invention, there is provided an end-to-end audio signal delay testing method, including: a first terminal sends a first audio information group through a first audio signal generator, a first conversion device converts the first audio information group into a first continuous sound test signal, and then sends the first continuous sound test signal to a second conversion device through a system network, the first continuous sound test signal is transmitted through the system network and the second conversion terminal to obtain a second continuous sound test signal, a second microphone arranged at the second terminal obtains the second continuous sound test signal, an audio analyzer arranged at the second terminal compares the first continuous sound test signal with the second continuous sound test signal to obtain the time delay passing between the first continuous sound test signal and the second continuous sound test signal, and the technical scheme is as follows:
an end-to-end audio signal delay test method, wherein the method comprises the following steps:
the method comprises the steps that a first terminal sends first audio information through a first audio signal generator, first conversion equipment converts the first audio information into a first continuous sound test signal and sends the first continuous sound test signal to second conversion equipment through a system network;
the first continuous sound test signal is transmitted through the system network and the second conversion terminal to obtain a second continuous sound test signal, and a second microphone arranged at the second terminal acquires the second continuous sound test signal;
and the audio analyzer arranged at the second terminal compares the first continuous sound test signal with the second continuous sound test signal to obtain the time delay from the first continuous sound test signal to the second continuous sound test signal.
In the above end-to-end audio signal delay testing method, before the first terminal sends the first audio signal in the method, the method further includes the first terminal performing a pretest.
The end-to-end audio signal delay testing method described above, wherein the pretesting step is:
the method comprises the steps that a first terminal sends first pre-test audio information through a first audio signal generator, first conversion equipment converts the first pre-test audio information into a first pre-test sound signal and sends the first pre-test sound signal to a second terminal through a system network;
a second simulation mouth of the second terminal acquires the second pretest sound signal and equalizes the second pretest sound signal to obtain a third pretest sound signal;
and a second audio signal generator of the second terminal receives the third pretest sound signal and converts the third pretest sound signal into second audio information.
In the above end-to-end audio signal delay testing method, the first conversion device is a hands-free terminal, and the second conversion device is a hands-free terminal and/or a microphone.
In the end-to-end audio signal delay test method, after the first audio signal generator sends out the audio information, the first audio information is equalized through the first simulation mouth.
In the above end-to-end audio signal delay test method, the first audio signal generator in the method is an analog device.
In the above end-to-end audio signal delay testing method, the first conversion device is a hands-free terminal and/or a microphone handle, and the second conversion device is a hands-free terminal and/or a microphone handle.
In the above end-to-end audio signal delay test method, when the first conversion device is a microphone handle, the first simulation mouth and the first microphone are mounted on the microphone of the microphone handle.
In the above end-to-end audio signal delay test method, the first microphone is a free field microphone.
In the above end-to-end audio signal delay test method, the second microphone is a free field microphone.
The technical scheme has the following advantages or beneficial effects:
according to the technical scheme, the delay information of the audio signal is effectively tested and obtained, and the method is simple, easy to implement and high in efficiency.
Drawings
Embodiments of the present invention will now be described more fully hereinafter with reference to the accompanying drawings. The drawings are, however, to be regarded as illustrative and explanatory only and are not restrictive of the scope of the invention.
FIG. 1 is a flow chart of a method for audio information delay testing according to an embodiment of the present invention;
FIG. 2 is a flow chart illustrating a pre-test method in an audio information testing method according to an embodiment of the invention;
FIG. 3 is a schematic diagram of a test signal according to an embodiment of the invention.
Detailed Description
Referring to the structure shown in fig. 1, the present invention provides an end-to-end audio signal delay test method, first, a first terminal sends first audio information through a first audio signal generator, a first converting device converts the first audio information into a first continuous sound test signal and sends the first continuous sound test signal to a second converting device through a system network;
continuing, the first continuous sound test signal is transmitted through the system network and the second conversion terminal to obtain a second continuous sound test signal, and a second microphone arranged at the second terminal acquires the second continuous sound test signal;
and finally, the audio analyzer arranged at the second terminal compares the first continuous sound test signal with the second continuous sound test signal to obtain the time delay from the first continuous sound test signal to the second continuous sound test signal.
It is noted here that before testing a new system, it is necessary to ensure that the system is operating correctly, i.e. the operational stability of the system is first determined, i.e. the pre-test signal is first transmitted to perform the pre-test function, where preferably three sets of CSS signals are used as the pre-test signal, each set of CSS signals is transmitted separately by the transmitting end, the time interval between two sets of CSS signals may be 101.38ms, the duration of each set of CSS signals is 248.62ms, and preferably a pseudo-random noise sequence with a sampling rate of 48kHz is used as the source of the transmitted CSS signals.
Referring to the structure shown in fig. 2, the method for performing pretest by using the pretest signal specifically includes:
the first terminal sends out first pre-test audio information through a first audio signal generator, and the first conversion equipment converts the first pre-test audio information into a first pre-test sound signal and sends the first pre-test sound signal to the second terminal through a system network;
a second simulation mouth of the second terminal acquires a second pretest sound signal and balances the second pretest sound signal to obtain a third pretest sound signal;
and a second audio signal generator of the second terminal receives the third pretest sound signal and converts the third pretest sound signal into second audio information.
It is proposed that the simulation nozzles are not limited to the simulation nozzles in the prior art, but may be those using HATS (Head and shoulder simulator) which meets the requirements of ITU-T P.58< Head and torque simulator for telephone try >. The testing method is not changed, only the composition of the detection system is changed into that HATS is adopted for voice output and voice collection at two ends, HATS is a large number of simulators adopted in the current mobile phone test, and a microphone and a simulation mouth are arranged in the head of the simulators.
In a preferred embodiment of the invention, the first conversion device is a hands-free terminal and the second conversion device is a hands-free terminal and/or a handset microphone.
In another preferred embodiment of the invention, the first conversion device is a hands-free terminal and/or a handset microphone and the second conversion device is a hands-free terminal and/or a handset microphone.
On this basis, further, when first conversion equipment is the handle microphone, first emulation mouth and first microphone are installed on the microphone of handle microphone.
On the basis, the first microphone and the second microphone are free field microphones.
It is proposed that the microphone (also referred to as a "dummy ear") is not limited to the microphone of the prior art, but may be a dummy ear using HATS (Head shoulder simulator) that meets the ITU-T P.58< Head and torque simulator for telephone try > standard. The testing method is not changed, but the composition of the detection system is changed into that HATS is adopted for voice output and voice collection at two ends. HATS is a large number of human simulators adopted in the test of the current mobile phone, and a microphone (a simulated ear) is arranged in the head of the human simulator.
The following is illustrated as a specific example:
the method comprises the steps that a first terminal at a door of a test building emits analog audio information, the analog audio information is converted into a first continuous sound test signal through a first conversion device (a common calling end is a hands-free device, the hands-free device is preferred to be used here, and a handle microphone can be used, of course), the first continuous sound test signal is transmitted to a second conversion device through a system network to obtain a second continuous sound test signal, wherein the second conversion device can be a hands-free device or a common handle microphone, when the second conversion device is the handle microphone, a second simulation mouth and a second microphone are installed on the handle microphone, the second microphone collects the second continuous sound test signal, and an audio analyzer compares the first continuous sound test signal with the second continuous sound test signal to obtain the time delay of audio information transmission.
Referring to the configuration shown in fig. 3, the audio test in the present invention uses CSS signal testing, preferably 4 sets of CSS signals, wherein the first three sets of CSS signals are used as pre-test signals, the present invention uses a pseudo-random noise sequence with a 48kHz sampling rate, the duration of each set of CSS signals is 248.62ms, the middle pause is 101.38ms, and the test signal should produce an average sound pressure at the MRP of-4.7 dBPa.
The first terminal is not limited to the doorway of the building, when the time delay of the audio information generated when the test master calls the signal communicated with the guard room terminal is delayed, the master calling terminal becomes the first terminal, the guard room terminal becomes the second terminal, similarly, when the time delay of the audio information generated when the test guard room terminal calls the signal communicated with the master is delayed, the guard room terminal is the first terminal, the master terminal is the second terminal, wherein the guard room terminal is used as the control terminal, and the communication between the doorway terminal and the master terminal can be controlled, monitored and the like by the guard room terminal.
The end-to-end audio signal delay test method is not only suitable for digital building intercom systems, but also suitable for conventional end-to-end nonstandard interfaces, nonstandard transmission protocols and delay tests of encrypted transmission, and the digital building intercom system is only a preferred embodiment and is not limiting to the invention.
In summary, a first terminal sends first audio information through a first audio signal generator, a first converting device converts the first audio information into a first continuous sound test signal, and then sends the first continuous sound test signal to a second converting device through a system network, the first continuous sound test signal is transmitted through the system network and the second converting terminal to obtain a second continuous sound test signal, a second microphone arranged at the second terminal obtains the second continuous sound test signal, an audio analyzer arranged at the second terminal compares the first continuous sound test signal with the second continuous sound test signal to obtain a time delay passing between the first continuous sound test signal and the second continuous sound test signal, and the technical scheme effectively tests to obtain time delay information of the audio signals, the method is simple, easy to implement and high in efficiency, and the first audio signal generator is used as an analog device and high in stability and reliability.
It is to be understood that the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, the size and relative sizes of layers and regions may be exaggerated for clarity. Like reference numerals refer to like elements throughout.
The above description is of the preferred embodiment of the invention. It is to be understood that the invention is not limited to the particular embodiments described above, in that devices and structures not described in detail are understood to be implemented in a manner common in the art; those skilled in the art can make many possible variations and modifications to the disclosed embodiments, or modify equivalent embodiments, without affecting the spirit of the invention, using the methods and techniques disclosed above, without departing from the scope of the invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention, unless the contents of the technical solution of the present invention are departed.
Claims (10)
1. A method for end-to-end audio signal delay testing, the method comprising:
the method comprises the steps that a first terminal sends first audio information through a first audio signal generator, first conversion equipment converts the first audio information into a first continuous sound test signal and sends the first continuous sound test signal to second conversion equipment through a system network;
the first continuous sound test signal is transmitted through the system network and the second conversion terminal to obtain a second continuous sound test signal, and a second microphone arranged at the second terminal acquires the second continuous sound test signal;
and the audio analyzer arranged at the second terminal compares the first continuous sound test signal with the second continuous sound test signal to obtain the time delay between the first continuous sound test signal and the second continuous sound test signal.
2. The method for end-to-end audio signal delay testing according to claim 1, wherein said method further comprises said first terminal performing a pretest before said first terminal emits said first audio signal.
3. The method for end-to-end audio signal delay testing according to claim 2, wherein said pre-testing comprises the steps of:
the method comprises the steps that a first terminal sends first pre-test audio information through a first audio signal generator, first conversion equipment converts the first pre-test audio information into a first pre-test sound signal and sends the first pre-test sound signal to a second terminal through a system network;
a second simulation mouth of the second terminal acquires the second pretest sound signal and equalizes the second pretest sound signal to obtain a third pretest sound signal;
and a second audio signal generator of the second terminal receives the third pretest sound signal and converts the third pretest sound signal into second audio information.
4. The end-to-end audio signal delay test method of claim 3, characterized in that the first conversion device is a hands-free terminal and the second conversion device is a hands-free terminal and/or a handset microphone.
5. The method for end-to-end audio signal delay testing according to claim 1, wherein after the first audio signal generator sends out the audio information, the first audio information is equalized through the first simulation mouth.
6. The method for end-to-end audio signal delay testing according to claim 5, wherein the first audio signal generator is an analog device.
7. The end-to-end audio signal delay test method of claim 1, characterized in that the first conversion device is a hands-free terminal and/or a handset microphone, and the second conversion device is a hands-free terminal and/or a handset microphone.
8. The end-to-end audio signal delay test method of claim 7, wherein when said first converting device is a handset microphone, said first dummy mouthpiece and said first microphone are mounted on a microphone of said handset microphone.
9. The end-to-end audio signal delay test method of claim 8, wherein said first microphone is a free field microphone.
10. The end-to-end audio signal delay test method of claim 8, wherein said second microphones are all free field microphones.
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1801995A (en) * | 2005-01-05 | 2006-07-12 | 华为技术有限公司 | Network time-delay testing method |
| CN101110654A (en) * | 2007-08-17 | 2008-01-23 | 中兴通讯股份有限公司 | Method and device for testing network delay time |
| CN102325059A (en) * | 2011-09-09 | 2012-01-18 | 华南理工大学 | Audio frequency end-to-end time delay measurement method of non-intrusive single end acquisition and apparatus thereof |
| CN104125022A (en) * | 2013-11-27 | 2014-10-29 | 腾讯科技(成都)有限公司 | Audio transmission delay measuring method and system |
| CN105472190A (en) * | 2015-11-13 | 2016-04-06 | 公安部第三研究所 | Audio signal time delay testing method |
| CN109688528A (en) * | 2018-12-27 | 2019-04-26 | 安克创新科技股份有限公司 | The test method of audio frequency apparatus and signal delay, system and storage medium |
| CN110300036A (en) * | 2019-06-25 | 2019-10-01 | 广州小鹏汽车科技有限公司 | Speech path network time-delay test method and test macro |
| CN110324566A (en) * | 2019-07-05 | 2019-10-11 | 苏州科达科技股份有限公司 | The test method of sound delay, test device and test equipment in video conference |
| CN110365555A (en) * | 2019-08-08 | 2019-10-22 | 广州虎牙科技有限公司 | Audio delay test method, device, electronic equipment and readable storage medium storing program for executing |
| CN110430104A (en) * | 2019-09-18 | 2019-11-08 | 北京云中融信网络科技有限公司 | Test method, device, storage medium and the electronic equipment of audio transmission delay |
-
2020
- 2020-12-02 CN CN202011394751.8A patent/CN112489686A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1801995A (en) * | 2005-01-05 | 2006-07-12 | 华为技术有限公司 | Network time-delay testing method |
| CN101110654A (en) * | 2007-08-17 | 2008-01-23 | 中兴通讯股份有限公司 | Method and device for testing network delay time |
| CN102325059A (en) * | 2011-09-09 | 2012-01-18 | 华南理工大学 | Audio frequency end-to-end time delay measurement method of non-intrusive single end acquisition and apparatus thereof |
| CN104125022A (en) * | 2013-11-27 | 2014-10-29 | 腾讯科技(成都)有限公司 | Audio transmission delay measuring method and system |
| CN105472190A (en) * | 2015-11-13 | 2016-04-06 | 公安部第三研究所 | Audio signal time delay testing method |
| CN109688528A (en) * | 2018-12-27 | 2019-04-26 | 安克创新科技股份有限公司 | The test method of audio frequency apparatus and signal delay, system and storage medium |
| CN110300036A (en) * | 2019-06-25 | 2019-10-01 | 广州小鹏汽车科技有限公司 | Speech path network time-delay test method and test macro |
| CN110324566A (en) * | 2019-07-05 | 2019-10-11 | 苏州科达科技股份有限公司 | The test method of sound delay, test device and test equipment in video conference |
| CN110365555A (en) * | 2019-08-08 | 2019-10-22 | 广州虎牙科技有限公司 | Audio delay test method, device, electronic equipment and readable storage medium storing program for executing |
| CN110430104A (en) * | 2019-09-18 | 2019-11-08 | 北京云中融信网络科技有限公司 | Test method, device, storage medium and the electronic equipment of audio transmission delay |
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