摘要
应用互功率谱测表面声强,仪器通道相位差难以解决.本文探讨了能够回避仪器通道相位差测量表面声强的新方法,并进行了相应的试验研究.
When using cross-spectral method to measure surface sound intensity, the phase error between velocity and pressure signal channels is quite difficult to be measured. In this paper,new methods which will not be affected by the phase error are studied,and correponding experiments are carried out to examine these methods.
出处
《振动工程学报》
EI
CSCD
1991年第4期74-77,共4页
Journal of Vibration Engineering
关键词
互功率谱
表面声强
噪声
cross power spectrum, surface sound intensity, noise
