小波分析在手表走时测试中的应用

Application of wavelet analysis in watch testing

由于手表检测的表音信号中含有大量的噪音信号,这给手表的检测带来了很大困难。简述了小波消噪的基础理论,论述了小波分析在手表走时测试中的具体应用。试验及分析结果表明,在提取表音信号时采用小波分析方法,很大程度上消除了噪音的影响,提高了手表走时测试的精度。

There is lots of noise in the signal of watch testing, and it is a big problem to watch testing. The fundamental theory of wavelet ＇analysis was described, and the real application of wavelet analysis in watch testing was expatiated. Experiment and analysis results shows that the signals which picked up from watch voice contains much less noise signal, and it improves the precision of watch testing.