文章摘要
卢铃,孙红灵,尹铫,杨军.一种用于声源低频性能测试的互易装置[J].,2016,35(6):520-526
一种用于声源低频性能测试的互易装置
A reciprocal device for low frequency property test of a sound source
投稿时间:2016-01-26  修订日期:2016-10-24
中文摘要:
      声源的辐射性能是一个重要参数,其测试往往在全消声室、混响室等特殊的环境中进行,而在复杂环境中的性能测试,尤其是低频性能的测试则是一个难题。互易原理广泛存在于线性、无源、稳定的系统中,在许多复杂环境中同样成立,因此提供了一种解决该难题的途径。基于力声互易原理,本文设计了一种双端面的互易装置,通过力电互易实验,验证了该装置的互易性。利用该装置,在全消声环境以及强混响环境中测试了三种不同的声源,测试结果与自由场法测试结果具有较好的一致性,验证了该装置和方法的有效性。
英文摘要:
      The radiation property of a sound source is important, and it is often measured in an anechoic room, reverberation room and some special environments. However, it’s a difficult problem to measure the radiation property in arbitrary environments, especially in low frequency band. Reciprocity principle exists in linear, passive, stable systems widely. It is valid in complex environment, which provides an approach to solve the problem. In this work, a two-end-faces reciprocal device is designed based on the mechanical-acoustical reciprocity. The reciprocal property of the device is verified by mechanical-electrical reciprocal experiment. Then three different sound sources are tested based on mechanical-acoustical reciprocity with the reciprocal device in an anechoic room and a strong reverberation room. The results agree with those of the free field method very well. It demonstrates the effectiveness of this device and this method.
DOI:10.11684/j.issn.1000-310X.2016.06.007
中文关键词: 声源,低频,互易
英文关键词: sound source  reciprocity principle  low-frequency
基金项目:
作者单位E-mail
卢铃 中国科学院噪声与振动重点实验室(声学研究所) luling11@mails.ucas.ac.cn 
孙红灵 中国科学院噪声与振动重点实验室(声学研究所) hlsun@mail.ioa.ac.cn 
尹铫 中国科学院噪声与振动重点实验室(声学研究所) yinyao@mail.ioa.ac.cn 
杨军 中国科学院噪声与振动重点实验室(声学研究所) jyang@mail.ioa.ac.cn 
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