摘要
小波收缩用于语音增强时,阈值算法和阈值函数是最重要的参量.为了在小波语音增强中得到可靠的选择方案,通过对这两种小波收缩参数进行分析,得到了相关数据结果,并给出SURE阈值算法和Universal阈值算法的对比结论.用常见的几种阈值函数分析软类阈值函数和硬类阈值函数,并给出了这两种参数对应选择的方法.
Threshold algorithms and functions are the most important factors of wavelet shrinkage in speech enhancement. In order to get reliable selectable schemes, the paper analyzed two kinds of wavelet shrinkage parameter, compared the SURE and Universal threshold algorithms,and analyzed several kinds of threshold function, which were categorized into two major groups：soft functions and hard functions. The corresponding selection methods of the two groups of parameter are also presented.
出处
《南昌工程学院学报》
CAS
2008年第4期44-47,共4页
Journal of Nanchang Institute of Technology
关键词
小波收缩
语音增强
阈值算法
阈值函数
wavelet shrinkage
speech enhancement
threshold algorithms
threshold functions
