文章摘要
刘勋,相敬林.声强向量法对声源定向的理论和实验研究[J].声学技术,2001,(2):59~62
声强向量法对声源定向的理论和实验研究
Study on theory and experiment of acoustic source bearing with acoustic intensity vector
投稿时间:2000-03-27  修订日期:2000-04-28
DOI:
中文关键词: 声强向量  声源定向  声场
英文关键词: acoustic intensity vector  acoustic source bearing  sound field.
基金项目:国防预研基金;高等学校博士点专项基金资助
作者单位
刘勋 西北工业大学航海工程学院, 西安 710072 
相敬林 西北工业大学航海工程学院, 西安 710072 
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中文摘要:
      文章应用的双传声器声强探头CM-202和与之配套的传声器,自行设计了1个声强探头支撑架,使之可以把声强探头转动到空间笛卡儿坐标系的3个互相垂直的方向,并且它们的几何中心保持不变,这样就可以测量平稳声场中1点的声强矢量的3个分量,由此就能对声源进行定向。在半消声室中应用这套实验装置对声源进行了定向研究,并探讨了各种误差因素与定向精度的关系。
英文摘要:
      In this paper the acoustic intensity probe CM-202 and a microphone pair are used, and a bracing frame is designed for the probe CM-202, so that it can be turn to three mutually perpendicular axes of spatial Cartesian coordinate system and their geometric centers are the same, in this way, three components of acoustic intensity vector of one point in stationary sound field and the bearing of sound source can be determined. The bearing experiment of sound source is done with the set of experiment device in semianechoic room, the relation between bearing precision and all kinds of error factor is discussed.
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