Research on Threshold of Speech Signal De-noise Based on Wavelet Analysis

Speech signal de-noise based on wavelet analysis is a hot spots in speech signal processing,it is discussed about the selection of threshold function. There are two traditional threshold function,hard-threshold function and soft-threshold function,these two But they cannot satisfy the demand of many fields because of limited utilization. By improving the threshold function based on the traditional threshold function,the effect is better than using traditional threshold function.