计算机工程与应用2012，Vol.48Issue(17)：139-142,4.DOI:10.3778/j.issn.1002-8331.2012.17.027
一种低延时双端发音检测方法
Low delay double-talk detection algorithm
摘要
Abstract
Echo cancellation is a key part of speech communication. One of the main design issues is the control logic for the adaptive filter which estimates echo path. To avoid divergence of the adaptive filter, the filter coefficients should be frozen in the presence of double-talk and adapt as quickly as possible once double-talk is absent. However the filter may have diverged before double-talk is detected due to detection delay issue. A low detection delay algorithm is presented based on energy comparison approach with the assumption that echo suppression should be more than 10 dB once adaptive filter has been converged. The experimental results show that, compared with cross-correlation approach, detection delay of the algorithm is reduced about 35 ms.关键词
回声消除/自适应滤波/双端发音/检测延时Key words
echo cancellation/ adaptive filter/ double-talk/ detection delay分类
信息技术与安全科学引用本文复制引用
袁红星,吴少群,郭立,朱仁祥..一种低延时双端发音检测方法[J].计算机工程与应用,2012,48(17):139-142,4.基金项目
国家自然科学基金(No.61071173) （No.61071173）
宁波市自然科学基金(No.2010A610176). （No.2010A610176）
