中文说明：
小波阈值去噪，含不同分解层次、输入信噪比、阈值、阈值函数去噪功能的比较。原始信号为高斯脉冲。
English Description：
Wavelet threshold denoising, including different decomposition levels, input signal-to-noise ratio, threshold, threshold function denoising function comparison. The original signal is Gaussian pulse.