摘要
介绍了小波变换原理,及M allat算法,通过对压力脉动信号的分解与重构,对其进行除噪处理,结果表明用小波变换原理对信号滤波是十分有效的,这对提高相关算法的精度是有利的。
The paper introduces the wavelete transform and the Mallat algorithm. It is put forth that the noise of pressure fluctuation singal can be reduced based on the decomposing of pressure fluctuation singal and the rebuilding of the useful singal. The result of experiment proves this method is effective on singal mixing up noise. It is also effective on increasing the accuracy of cross-correlation measurement.
出处
《噪声与振动控制》
CSCD
北大核心
2006年第6期46-47,共2页
Noise and Vibration Control
关键词
声学
小波变换
MALLAT算法
相关法
压力脉动
acoustics
wavelete transform
Mallat algorithm
cross-correlation measurement
pressure fluctuation singal
