小波方法进行降噪，阈值函数来完成不同设计，核心程序如下面的所示，使用的小波基有coif5，db3，sym4，bior2.4，haar，rbio-Wavelet method for noise reduction, design to complete different threshold function, the core program as shown below, using the wavelet base coif5, db3, sym4, bior2.4, haar, rbio

These are the files for haar wavelet decomposition written in C .-These are the files for haar wavelet decomposition written in C .

several transforms are used to convert onedomain to another domain like dct,haar -several transforms are used to convert onedomain to another domain like dct,haar