中文说明：
这是一维小波去噪程序，包括4种阈值和软硬阈值去噪，以及去噪后精度评定，方便大家一起学习。
English Description：
This is a one-dimensional wavelet denoising program, including 4 kinds of threshold and hard and soft threshold denoising, as well as the accuracy evaluation after denoising, convenient for everyone to learn together