A New Pre-processing Method for Multi-channel Echo Cancellation Based on Fuzzy Control

机译：基于模糊控制的多通道回声消除的预处理新方法

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The essential problem of multi-channel echo cancellation is caused by the strong correlation of two-channel input signals and the methods of preprocessing are always used to decorrelate it and the decorrelation degree depends on nonlinear coefficient α. But in most research, α is constant. In real application, the cross correlation is varying and α should be adjusted with correlation. But there is not precise mathematical formula between them. In this paper, the proposed method applies fuzzy logic to choose α so that the communication quality and convergence performance can be assured on the premise of small addition of computation. Simulations also show the effect of validity method.

机译：多通道回声消除的本质问题是由两通道输入信号的强相关性引起的，并且总是使用预处理方法对其进行去相关，并且去相关度取决于非线性系数α。但是在大多数研究中，α是常数。在实际应用中，互相关是变化的，应通过相关调整α。但是它们之间没有精确的数学公式。本文提出的方法采用模糊逻辑来选择α，从而在不增加计算量的前提下保证通信质量和收敛性能。仿真也表明了有效性方法的有效性。

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《International Conference on Fuzzy Systems and Knowledge Discovery(FSKD 2005) pt.1; 20050827-29; Changsha(CN)》|2005年|P.837-840|共4页
会议地点 Changsha(CN)
作者
Xiaolu Li; Wang Jie; Shengli Xie;
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作者单位

Electronic and Communication Engineering, South China University of Technology, 510641, China;

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原文格式 PDF
正文语种 eng
中图分类专家系统、知识工程;
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A New Pre-processing Method for Multi-channel Echo Cancellation Based on Fuzzy Control

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