Detection method and detection system for audio frequency transmission characteristics of building intercom system

A technology of building intercom system and audio transmission characteristics, which is applied in the field of detection of audio transmission characteristics of building intercom system to achieve the effect of improving accuracy and accuracy

Active Publication Date: 2014-02-26
THE THIRD RES INST OF MIN OF PUBLIC SECURITY
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Problems solved by technology

[0008] Based on the above-mentioned defects existing in the prior art, the main purpose of this application is to provide a method for detecting audio transmission characteristics of a building intercom syste...

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  • Detection method and detection system for audio frequency transmission characteristics of building intercom system
  • Detection method and detection system for audio frequency transmission characteristics of building intercom system
  • Detection method and detection system for audio frequency transmission characteristics of building intercom system

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Embodiment Construction

[0019] The main idea of ​​this application is that in the detection, the sound source adopts the P50 artificial voice of ITU-T or the human voice in P.501 stipulated by ITU-T as the input voice signal in the detection, so that the audio performance of the voice transmitted in the detection It is more in line with the actual situation, so that the results obtained by detecting or testing the building intercom system are more accurate. Further, install the intercom device of the building intercom system that uses hands-free communication on the backboard that can adapt to the size of the intercom device, that is, the size of the backboard can be adjusted and changed with the size of the intercom device, then It can flexibly adapt to the size of various devices to imitate the most real environment for detection, obtain sound reflection effects, and achieve more accurate detection. Further, through the improvement of the audio distortion test in the detection process, the influenc...

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Abstract

The invention relates to a detection method and a detection system for audio frequency transmission characteristics of a building intercom system. The detection method comprises the steps: a sound source portion generates specific voice signals, the specific voice signals taken as input voice signals are input into a detected access, the specific voice signals are transmitted in the detected access, and are output as detected output voice signals; the specific voice signals comprise a P.50 simulation voice signal or a P.501 human voice signal of the international telecommunication union-telecommunication standardization organization (ITU-T); the sound pressure related to the detected output voice signals are detected based on the detected output voice signals, and audio frequency characteristic parameter values are calculated in dependence on the detected sound pressure related to the detected output voice signals in order to determine audio frequency transmission characteristics of the detected access. By improving the measurement of sound sources, backboards and audio frequency distortion, the detection accuracy and the detection result precision of the audio frequency transmission characteristics of the simulation (bus-mode) building intercom system are improved, and the detection result is relatively close to the actual using effect.

Description

technical field [0001] The present application relates to the field of voice transmission detection, and more specifically relates to a method for detecting audio transmission characteristics of a building intercom system. Background technique [0002] In the prior art, the building intercom system applied to the entrance and exit control of residential buildings needs to detect (inspect) or test whether the voice transmission, video transmission and other performance of each device of the building intercom system meet the specified indicators. Only when the results of these inspections or tests meet the requirements of the specified standards can the intercom system be guaranteed to be available and easy to use, and then these devices can be produced and practically applied. With the continuous advancement of various technologies of the building intercom system, the performance requirements for all aspects of the system are also constantly updated and improved. Therefore, ...

Claims

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Application Information

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IPC IPC(8): H04Q5/24H04B17/00H04B17/309
CPCG08C23/02G10L25/60H04Q2213/1316
Inventor 戎玲鲍逸明史源张振一王丽娟
Owner THE THIRD RES INST OF MIN OF PUBLIC SECURITY
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