摘要
本文概述了复式声强及其物理意义,并利用7T18s计算机自行开发建立了复式声强系统,经试验验证该系统具有良好的方向性和测试精度。L195柴油机和SY492Q汽油机的试验结果表明复式声强是一种有效的发动机辐射噪声源识别和声场分析方法。
This paper descibes the basic physical meaning of complex acoustical intensity and the setting up of its measuring system based on Π18s computer. The system has a good directional characteristic and accuracy. The test results of L195 diesel engine and SY492Q gasoline engine show that complex acoustical intensity is a powerful means of noise source identification and acoustical field analysis.
出处
《汽车工程》
EI
CSCD
北大核心
1993年第3期137-144,共8页
Automotive Engineering
关键词
内燃机
噪声
声强
声源
Internal comengine Noise Sound intensity Sound source
