Research of Acoustic Signal De-Noising Using Wavelet Transform

Abstract

Wavelet theory is a new branch in signal processing field, and due to good performance in time-frequency analysis, it has become an important method in the signal de-noising application. In this paper, the basic principle of wavelet threshold de-nosing is expounded. And based on the traditional threshold method, improved methods are introduced. Finally, through simulation and analysis, these improved methods prove to be suitable for acoustic signal de-noising.