摘要
利用小波变换对信号进行降噪处理,最难把握的就是降噪时小波基与阈值的选择。针对小波基与阈值的最优选择,介绍了对具体信号降噪过程中小波基与阈值选择的一种方法,并通过与其它阈值选取方法的降噪效果进行比较,结果表明,该方法可以选择出较优的小波基与阈值。
The most difficulties in processing of signal noise reduction via wavelet transform is the selection of small porgy and the threshold. For the optimal selection of small porgy and thresholds, this article described a method for selection of the small porgy and threshold during specific signal noise reduction and compares the performance during noise reduction with the results achieved by other methods for threshold selection. The results show that it is a better way for selection of small porgy and threshold.
出处
《机械制造》
2015年第12期42-45,共4页
Machinery
关键词
小波变换
降噪
小波基
阈值
Wavelet Transform Noise Reduction Small Porgy Threshold
