Speech Signal Denoising Method Via Wavelet Transform

摘要

In order to solve the interfering problem in the process of speech communication, this paper aims at the property of speech and noise, and then improve wavelet single threshold denoising method and put forward a novel speech enhancement method, which is named wavelet frequency band threshold denoising method based on multi-resolution analysis. By denoising a noisy speech with this method, the value of Signal to Noise Ratio (SNR) has greatly increased. And the value of its Root Square Mean Error (RSME) is small. Comparing with other denoising methods, the novel method is more solid and perfect.