电容传声器声中心的测量及其对互易校准的影响  

Acoustic center measurement of condenser microphones and its influence on reciprocity calibration

作　　者：桑帅军[1] 何龙标[2] 裘剑敏[1] 牛锋[2] 张志凯[1] 姚磊[1] 

机构地区：[1]浙江省计量科学研究院,浙江杭州310023 [2]中国计量科学研究院,北京100013

出　　处：《中国测试》2017年第4期15-18,共4页China Measurement & Test

基　　金：国家自然科学基金(51575502);国家质量基础的共性技术研究与应用重点专项(2016YFF0201006)

摘　　要：为研究LS1、LS2及WS3等典型电容传声器声中心位置的准确值,基于自由场传声器声中心位置的测量理论,利用声学分析仪、消声箱和适调放大器等组成的声中心位置测量系统分别测量LS1、LS2及WS3型电容传声器的声中心位置。将测试结果与已公布的相应类型传声器声中心位置数据进行比较,得出声中心位置对自由场互易校准结果影响不可忽视,且在进行传声器自由场互易校准前,需要对参与互易校准的每只传声器的声中心位置进行测量确定。In order to research the acoustic center of LS1, LS2 and WS3 condenser microphones, this paper measured the acoustic center of these types condenser microphones. The measurement based on theory of microphones＇ acoustic center in free-field, and the measurement system consists of anechoic chamber, acoustic analyzer and condition amplifier. Then this paper compared the test data and the published corresponding type microphones＇ acoustic center data. The acoustic center is not to be neglected in free-field reciprocity calibration. The results show that measuring the acoustic center of each condenser microphone is necessary before the free-field reciprocity calibration.

关 键 词：传声器 声中心 自由场 互易校准 

分 类 号：TN641.2[电子电信—电路与系统]