Aiming at the drawbacks of the traditional soft and hard threshold methods,this paper presents an improved threshold function and a new threshold,and a new wavelet threshold de- noising method is obtained. Simulation experiment is carried out for three kinds of signals under Matlab environment,the results show that the SNR is higher and the RMSE is much smaller after using the method which is proposed by this paper to remove noise from signals,and the method is proved to have better de- noising effect.
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