关于小波变换的练习程序，小波变换步骤：

1.把小波w(t)和原函数f(t)的开始部分进行比较，计算系数C。系数C表示该部分函数与小波的相似程度。

2.把小波向右移k单位，得到小波w(t-k)，重复1。重复该部知道函数f结束.

3.扩展小波w(t)，得到小波w(t/2)，重复步骤1,2.

4.不断扩展小波，重复1,2,3.

这里使用的haar小波，缩放函数是[1 1]，小波函数是[1 -1]。-Exercise programs on wavelet transform, wavelet transform steps: 1. wavelet w (t), and the original function f (t) of the beginning of comparison, calculation of the coefficient C. Coefficient C indicates the degree of similarity that part of the function and wavelets. 2. Wavelet k units to the right, to give the wavelet w (tk), repeat 1. Repeat this section to know the end of the function f. 3. Extend the wavelet w (t), to obtain the wavelet w (t/2), repeat steps 1, 2, 4. expanding wavelet, repeat 1,2,3. As used herein, haar wavelet , zoom function is [11], the wavelet function is [1-1].