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Audio conversion characteristic test method

A technology of conversion characteristics and testing methods, which is applied in transmission monitoring, two-way sound reinforcement telephone systems, electrical components, etc., and can solve the problems that the voice quality test can only be tested in the whole process, and the electroacoustic test method cannot be effectively tested. , to achieve the effect of avoiding early conversion, simple method and high efficiency

Active Publication Date: 2016-03-30
THE THIRD RES INST OF MIN OF PUBLIC SECURITY +1
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AI Technical Summary

Problems solved by technology

[0002] At present, there are many digital end-to-end devices with no standard interface or non-standard transmission protocol or encryption technology. The existing electroacoustic test method cannot be used for effective testing, and only the end-to-end full-range acoustic signal test can be used.
Among them, taking the building intercom system as an example of residential security technology prevention products, because of the non-standard transmission protocol and non-standard interface, the test of its voice quality can only be carried out in the whole process of sound test

Method used

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specific Embodiment 1

[0040] see figure 2 As shown in the structure, before the first audio signal generator of the sending module produces a test signal, a pre-test signal group consisting of 9 pre-test signals is generated to test the performance of the audio channel. In this embodiment, the continuation of the pre-test signal The duration of the time and the test signal are both 248.62ms, the time interval between two adjacent pre-test signals and the time interval between the last pre-test signal and the test signal in the pre-test signal group are both 101.38ms, therefore, In this embodiment, the time of a group of test signals (including the time in the pre-test signal group and the time of the test signal) is 3398.62ms, and the first audio signal generator of the sending module has sent the pre-test in the pre-test signal group After the signal, a test signal group is sent, and the test signal group is equalized by the first artificial mouth, and then transmitted to the local walkie-talkie,...

specific Embodiment 2

[0041] see image 3 As shown in the structure, before the first audio signal generator of the sending module produces a test signal, a pre-test signal group consisting of 3 pre-test signals is generated to test the performance of the audio channel. In this embodiment, the duration of the pre-test signal The duration of the time and the test signal are both 248.62ms, the time interval between two adjacent pre-test signals and the time interval between the last pre-test signal and the test signal in the pre-test signal group are both 101.38ms, therefore, In this embodiment, the time of a group of test signals (including the time in the pre-test signal group and the time of the test signal) is 1298.62ms, and the first audio signal generator of the sending module sends the pre-test in the pre-test signal group After the signal group, a test signal is sent, and after being equalized by the first artificial mouth, the test signal is transmitted to the local walkie-talkie, and the lo...

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Abstract

The invention relates to the technical field of audio test, and provides an audio conversion equipment test method. After test signals generated by a first audio signal generator reach a receiving module after a first time delay, a second audio analyzer of the receiving module measures a first time period between the time when the receiving modules sends out feedback information and the time when the sound amplitude for transmission of the feedback information in an audio channel is lower than a first preset value, the conversion time is calculated according to the first time period and the first time delay, and whether the conversion performance is good is judged according to the conversion time. By implementing the technical scheme, the conversion performance of audio can be obtained effectively through test, and the audio signal loss problem caused by advance or delayed conversion of the conversion equipment is avoided effectively. The method is simple and easy to implement, is of high efficiency, and effectively improves the reliability of the whole system.

Description

technical field [0001] The invention relates to the technical field of audio testing, in particular to an audio conversion characteristic testing method. Background technique [0002] At present, there are many digital end-to-end devices with no standard interface or non-standard transmission protocol or encryption technology. The existing electro-acoustic test method cannot be used for effective testing, and only the end-to-end full-range acoustic signal test can be used. Among them, taking the building intercom system as an example of residential security technology and prevention products, because of the non-standard transmission protocol and non-standard interface, the voice quality test can only be tested in the whole process. For example, in a home building walkie-talkie, when the sending module requests information from the receiving module, the sending module needs to transmit the information to the receiving module through the system network of the audio channel. Af...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04M9/08
CPCH04M9/08H04B17/00
Inventor 鲍逸明戎玲胡融
Owner THE THIRD RES INST OF MIN OF PUBLIC SECURITY
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