Abstract
To overcome the shortcomings of hard threshold method and soft threshold method of wavelet threshold based signal denoising, a new threshold function is presented in this paper. This function combines hard threshold function and soft threshold function, which has good mathematical properties and physical significance. It can be used in various cases of denoising by selecting suitable parameters. Simulation results and comparative studies show that this method is superior to the hard threshold method and soft threshold method, and it has obvious effect on signal denoising.
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