1、先生成一个“Blocks”信号

2、加上高斯白噪声

3、用 db3 小波进行分解，以说明信号和噪声在各个尺度上的表现。-1, the President as a "Blocks" signal 2, and 3 Gaussian white noise. db3 using wavelet decomposition, to illustrate the signal and noise in various scales performance.