An Algorithm of Signal De-noising by Using Wavelet Analysis

A new algorithm of signal de-noising by using wavelet analysis is provided in this paper. Owing to the different singularities of the signal and noise, the local maxima of their dyadic wavelet transform modulus are different too. According to the multi-scale behaviors of wavelet transform of signal and random noise, the algorithm of signal de-noising based on wavelet analysis is proposed. Experiments show the proposed algorithm improved the signal-to-noise ratios of the de-noised signals. The de-noised signals have smooth and nice visual appearance