摘要
小波阈值去噪是一种简洁有效的信号去噪方法,在信号处理领域得到了广泛应用。结合语音信号特有的频率分布特点,在软硬阈值函数的基础上,提出了一种改进的基于分解尺度的小波阈值去噪函数。仿真实验表明,该函数能够较好的滤除语音数据中的噪声,并且在更大程度上保留原始语音信息。
Wavelet threshold de-noising method has been a simple and effective method of signal de-noising.Considering the special frequency distribution of speech signal,based on the hard and soft threshold functions and some other modified threshold de-noising methods,a improved threshold de-noising function is proposed in this paper.Experiments show that the improved function has a better performance in speech de-noising and leaves more original speech information.
出处
《微型电脑应用》
2010年第11期60-61,64,共3页
Microcomputer Applications
关键词
小波变换
语音去噪
阈值去噪
Wavelet Transform,Speech De-noising,Threshold De-noising
