应用近场声全息方法对噪声源的实验研究  

The Research on the Noise Souse Ldentification by the Near-field Holography Method

作　　者：宫延明[1] 金涛[1] 谢志东[1] 

机构地区：[1]浙江大学化工机械研究所,浙江杭州310027

出　　处：《现代机械》2008年第3期34-37,40,共5页Modern Machinery

摘　　要：本文介绍了可视化空间声场和定位噪声源的一种强有力工具———近场声全息技术,对理论研究方法进行了概括阐释,并通过试验研究的方式高精确的辨认来源以及邻近声场。最后精确的将声压,质点振速以及声强矢量等声学信息绘制到3D图像中,对声场进行重建。This article describes a powerful technology of near field acoustic holography which can visualize the space acoustic field and locate the noise source. We also describe the near-field holography theory concisely and highly accurate identification of sound source location and the distinction of neighboring sound sources through the experiment. Finally, we accurately get the mapping of acoustic quantities onto the shaped 3D sources and reconstruct the noise source.

关 键 词：近场声全息 试验研究 声压 质点振速 声强矢量 

分 类 号：TQ051.8[化学工程]