小波包能量代码，利用db1小波将信号分解和重构，然后计算小波系数的平方，进行正则化-Wavelet packet energy code, the use db1 wavelet signal decomposition and reconstruction, and then calculate the square of wavelet coefficients, the regularization

实现以下功能：装载信号；完成信号的单尺度一维离散小波分解；从系数中重构低频部分和高频部分；显示高频和低频部分；由小波逆变换恢复信号；多层一维分解；提取系数的低频和高频部分；重构第3层的低频系数；重构第1、2、3、4、5层的高频信号；重构原始信号并显示-Achieve the following functions: load signal complete signal single-scale one-dimensional discrete wavelet decomposition r

STFT和ST变换的基本函数，和一个stft的一个例程-This code computes the Stockwell transform (S-Transform) of a one dimensional series without for loop, thereby making it computationally fast and simple. S-Transform was proposed in 1996. A nice tutorial on S-Transform can

小波分解重构，可以作为研究小波频率的一个重要参考，但是注意，该代码分解出来的高低频系数不能完全当作滤波器使用，只是参考。(Wavelet decomposition and reconstruction can be used as an important reference for studying wavelet frequency, but attention is paid to the high and low frequency coefficients decomposed by