基于小波包变换的语音信号降噪研究

Research on noise reduction from speech based on wavelet packet transform

应用小波包滤波技术,采用半软阈值函数,Donoho标准差估计,基于统计学数据的阈值确定方法,实现了语音信号的白噪声降噪处理,并通过仿真验证了算法的可行性。

This paper achieves noise reduction by using wavelet packet transform, semisoft shrinkage function, Donoho standard deviation estimate and threshold obtain based on statistics. At last the simulation proves the feasibility of the algorithm.