大型混响室高频特性试验研究  

Research on the high frequency performance of a large reverberation chamber

作　　者：耿丽艳[1] 李新明[1] 张俊刚[1] 

机构地区：[1]北京卫星环境工程研究所,北京100094

出　　处：《航天器环境工程》2007年第5期322-325,7,共4页Spacecraft Environment Engineering

摘　　要：文章简要介绍了2163 m^3混响室的基本组成及其性能,并针对提高2163 m^3混响室声场的高频性能,利用引进的(Ling公司)EPT-200声发生器和(中国常荣公司)ENSG-20000-250声发生器,对混响室的高频段特性进行了试验研究。结果表明:两种声发生器的使用都能有效提高2163m^3混响室的高频性能,其中ENSG-20000-250声发生器的高频性能更为突出。This paper discusses the basic composition and performance of the 2163m^3 reverberation chamber (China's largest acoustic laboratory),and the research to improve its performance in high frequency range by using EPT-200(Company Ling)and ENSG-20000-250(China Changrong)sound generators,respectively.It is concluded that the performance of the 2163m^3 reverberation chamber in the range of high frequency can be improved effectively by using both of the two types of high frequency noise generators,and the generator ENSG-20000-250 seems to give better results.

关 键 词：声振试验 混响室 高频特性 声发生器 

分 类 号：TB534[理学—物理] V416.8[理学—声学]