摘要
根据一路带噪信号,采用独立分量分析方法去除加性噪声,从理论上讲就是在观测信号向量的维数小于源信号向量维数情况下的独立分量分析问题。问题的关键是如何构造另一路观测信号,使问题有解。文中提出了一种改进的构造方法,这种方法非常简便,实验结果表明其分离性能比较理想。
Reducing additive noise by using independent component analysis(ICA)fr om one noisy signal can be rephrased as the application of ICA under insufficien t observations.The key to the prob-lem is to construct another mixed signal r easonably.This paper provides an improved method for con-structing another mix ed signal.The experiments demonstrate that the performance of the method is sat-isfactory.
出处
《电声技术》
北大核心
2003年第7期15-18,共4页
Audio Engineering
关键词
ICA
信号增强
观测信号
独立分量分析
signal enhancement
independent component analysis
observed signal
