Research on Testing Methods for Audio Surveillance Microphones in Security
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 impor-tant.Combined with GA/T 1758-2020"General Technical Requirements for Security Pickups",this paper inter-prets 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.
audio surveillance microphonesaudio frequency testfrequency response test
万方数据
维普
