近场声能量分析

本文以能量的观点对振动表面的声辐射特性和表面声强进行了理论分析.将近场声能分解成有功部分和无功部分,对这两部分能量进行了定量分析,获得一些有意义的结论和公式.通过对脉动球和摆动球两种典型声源的讨论,证实了本文的理论。

Analysis of Sound Energy in Near-Field

The radiation characteristics of vibrating surface and the surface sound intensity are theoretically studied in the light of energy. The sound energy in the near-field is quantitatively decomposed into active and passive compoments. Some conclusions are drawn and formulas derived. The discussion of the two typical sound sources, pulsating sphere and oscillating sphere, supports the arguments put forth in this paper.