中文说明：这是一个小波阈值消噪算法，使用的是一种新的阈值函数和新的阈值，能够根据分解尺度的增加，使阈值变小，这样正好符合噪声的特性，从而保留有用的信号，去噪效果更加好，不会出现失真
English Description：
This is a Wavelet threshold denoising algorithm, using a new kind of thresholding function and the new threshold, according to the decomposition increases, the threshold becomes small, then meet the noise characteristics, so as to preserve the useful signal denoising effect greater good, does not appear distorted