基于小波变换的语音增强算法

Speech Enhancement Based on Wavelet Transform

结合小波技术对传统的维纳滤波算法进行改进,对语音信号进行离散小波变换,求得小波系数,计算小波系数的阈值,然后利用阈值对小波系数进行过滤,再对小波重构信号,信号经过维纳滤波器模型达到去噪效果。最后对算法进行了仿真试验。

The purpose of this paper is to provide a new method to enhancement the speech signal. Firstly, it use the orthogonal wavelet filter to transform the speech signal, in order to obtain its wavelet coefficients. The coefficients can be filtered by the wavelet threshold. Secondly, it use the Winner filter to enhance the signal. Finally, it describe the practicability and effectiveness of the algorithm through simulation.