摘要
局部近场声全息技术在解决实际工程问题时有优势,适于重建局部声场的各种声学量。阐述了局部近场声全息的技术原理及各种实现算法,并根据所提算法的创新性和受关注程度,把局部近场声全息技术归纳为4类:基于快速傅里叶变换的局部近场声全息技术;基于等效源的局部近场声全息技术;基于统计最优的局部近场声全息技术;基于边界元的局部近场声全息技术。分析了各种方法的原理、发展过程以及研究现状。最后,提出了局部近场声全息技术研究的发展方向。
The Patch-NAH method possesses advantage in solving engineering problems, and it is especially suitable for reconstructing local sound field to obtain the acoustic parameters. After introducing the origin and basic algorithms of Patch-NAH, Patch-NAH methods are classified into four different types according to innovation extent and applicability of the methods themselves, and then, the principles, developments and current research status of the methods are introduced. The methods include the Fast Fourier Transform-based Patch-NAH, the equivalent source method-based Patch-NAH, the statistically optimized-based Patch-NAH, and the boundary element method-based Patch-NAH. Finally, the developing trend around Patch-NAH techniques is indicated.
出处
《农业机械学报》
EI
CAS
CSCD
北大核心
2008年第1期180-186,共7页
Transactions of the Chinese Society for Agricultural Machinery
基金
国家自然科学基金资助项目(项目编号:50675140)
国家“863”高技术研究发展计划资助项目(项目编号:2006AA042175)
关键词
局部近场声全息
研究进展
综述
Patch near-field acoustical holography, Development, Review
