摘要
根据连续小波变换具有比较二进离散小波变换和小波包变换更精细的尺度分辨率的特点,研究了适用于发动机表面辐射噪声源识别的C-mor小波变换的修正与证明。以一台柴油机为例,用得到的声强识别结果,验证了小波系数修正的正确性和实用性。
Based on the analysis of acoustic signals using wavelet transform technique ,an investigation into the noise source identification for a gas engine is presented,taking modify and testify for C-mor wavelet transform.This text takes an example of one gas engine,and validate the correctness and practicability of the amended wavelet modulus,which are verified by the identification of sound intehsity.
出处
《机械管理开发》
2008年第5期17-18,20,共3页
Mechanical Management and Development
关键词
内燃机
小波变换
噪声源
Gas engine
Wavelet transform
Noise source
