安防拾音器试验方法研究  

Research on Testing Methods for Audio Surveillance Microphones in Security

作　　者：夏本松 张振一[1] XIA Bensong;ZHANG Zhenyi

机构地区：[1]公安部第三研究所

出　　处：《计量与测试技术》2024年第8期98-100,104,共4页Metrology & Measurement Technique

摘　　要：随着电声行业的迅速发展,拾音器被广泛应用于安防领域。因此,对其性能和质量的检测非常重要。本文结合GA/T1758-2020《安防拾音器通用技术要求》,对自由场频率响应、自由场灵敏度级、等效噪声级、总谐波失真、输出阻抗等重要指标进行解读,并阐述了对应项目的试验方法。同时,以某拾音器的试验结果为例,对部分性能指标进行分析与研究。With the rapid development of the electroacoustic industry,pickups are more and more widely used in the field of security,and the detection of their performance and quality is becoming more and more important.Combined with GA/T 1758-2020"General Technical Requirements for Security Pickups",this paper interprets the important indexes such as free field frequency response,free field sensitivity level,equivalent noise level,total harmonic distortion and output impedance,and expounds the test method of corresponding items.At the same time,taking the test results of a pickup as an example,some performance indexes are analyzed and studied.

关 键 词：安防拾音器 音频试验 频率响应试验 

分 类 号：TN912.2[电子电信—通信与信息系统]