作者：桑帅军¹, 何龙标², 裘剑敏¹, 牛锋², 张志凯¹, 姚磊¹

作者单位：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

关键词：传声器;声中心;自由场;互易校准

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。

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

SANG Shuaijun¹, HE Longbiao², QIU Jianmin¹, NIU Feng², ZHANG Zhikai¹, YAO Lei¹

1. Zhejiang Institute of Metrology, Hangzhou 310023, China;
2. National Institute of Metrology, Beijing 100013, China

Abstract: 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.

Keywords: microphone;acoustic center;free-field;reciprocity calibration

2017, 43(4): 15-18  收稿日期: 2016-10-15;收到修改稿日期: 2016-12-20

基金项目: 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）

作者简介: 桑帅军(1986-),男,浙江绍兴市人,工程师,硕士,主要从事声学计量研究工作。

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