摘要
本文以IBM-PC微机为核心,组成一套声强测量分析系统,用自编软件实现声强的测量分析。得到的结果不仅有声强谱和声功率谱(窄带和1/3倍频程,线性和A计权),而且还能给出三维声强图和等声强级图。利用该系统成功地进行了CA 6140车床和电机的噪声谱分析,用三维声强图和等声强级图直观地描述了车床前面的噪声辐射状况。
In this paper, a Sound intensity measuring system based on IBM-PC computer has been developed.The measurement and Analysis of sound intensity and sound power can be performed by using self-developed software with satisfactory accuracy. The results obtained include not only the Sound intensity and sound power spectra ( linear, A-weighted and 1/3 octave) ,but also the three-diment ional plots and the contour plots of sound intensity. The analysis of noise spectra of an electric motor and a lathe CA 6140 has been made by using this system, and the three-dimensional plots and the contour plots of sound intensity describe the noise distribution radiated by the lathe.
出处
《合肥工业大学学报（自然科学版）》
CAS
CSCD
1990年第1期68-74,共7页
Journal of Hefei University of Technology：Natural Science
关键词
声强测量
信号分析
微机
sound intensity measurement
signal analysis
crossspectral method
