摘要
就一种基于非线性累加和的信号盲分离方法作了探讨。首先,文中针对方法中非线性函数特性对信号分离的影响从理论上作了分析,给出了加快迭代收敛的约束条件。接着,将该方法从无卷积混合信号分离的情况推广到混合卷积情形。最后通过数值模拟,给出了信号分离结果。
A nonlinear cumu1ants based blind signal separation method is considered. First, theoretical ana1ysis of thenonlinear function used in the separation method is presented. And constrained condition that is important to speedup the convergence is addressed. Then, the method is extended to the convolved signals. Finally, separated results aregiven by numerical simulation.
出处
《声学学报》
EI
CSCD
北大核心
2002年第3期241-249,共9页
Acta Acustica
基金
国家自然科学基金资助项目(69872014)
关键词
信号盲分离
非线性累加和
算法
数值模拟
信号处理
语音信号
Blind source separation
Computer simulation
Convergence of numerical methods
Nonlinear equations
