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Issue:
Research on method of Sparse Coding-based Speech Enhancement
Author(s):
DU Jun
Pages:
31
-
36
Year:
2009
Issue:
1
Journal:
Journal of Qingdao University(Natural Science Edition)
Keyword:
语音增强
;
稀疏编码
;
独立分量分析
;
小波消噪
;
Abstract:
利用带噪语音经特征基函数矩阵转换后所具有的稀疏特性,用最大似然估计方法对转换后得到的稀疏分量进行非线性压缩去噪,然后再经过反变换和重构恢复出原始语音信号的估计.特征基函数矩阵反映了语音数据本身的统计特性.仿真结果表明,与小波消噪法相比利用稀疏编码方法能极大程度地抑制背景噪声.
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