To avoid the signal distortion aroused by the incorrect selection of threshold, it applies fuzzy theory into wavelet threshold denoising method, which uses two membership functions to construct two fuzzy threshold denoising methods.

• 为了避免由于阈值选取不当造成信号失真,将模糊理论引入到小波阈值去噪中,利用两个常用隶属函数构造了两种模糊阈值去噪方法。