Abstract
The wavelet transform coefficient is processed by using grey relation analysis of the grey theory, and a new wavelet threshold method - GID (grey incidence degree) threshold method based on the wavelet analysis theory is introduced. The test shows that the signal smoothness and similarity of the two signal criteria have been greatly improved by the GID threshold method compared with existing threshold methods. According to the characteristics of different signals, GID threshold method gets better results that it can adaptively deal with noise suppression and details remaining of the two opposing signal problems, so as to provide a better choice for wavelet threshold methods of signal processing.
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