[01] Ye Yuting, School of Information Engineering, China University of Geosciences, Beijing, China. [02] Li Mei, School of Information Engineering, China University of Geosciences, Beijing, China.

A comparative analysis is made on four common threshold selection methods of wavelet denoising in this paper. First, analyze the theoretical definitions of the four typical threshold selection rules. Next, design corresponding MATLAB simulation experiments [1] to verify. Finally, we can safely draw the conclusion that for one dimensional voltage signal, adaptive threshold has the best effect in reducing the noise caused by large Gaussian noise, while fixed threshold plays an important role in weak noise. As for the picture, adaptive threshold and mixed threshold denoising reduced the noise obviously.

Wavelet Denoising, Threshold Selection Rules, MATLAB Simulation

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