一种适用于混响环境的麦克风阵列语音增强方法

被引:12
作者
张丽艳 [1 ,2 ]
殷福亮 [1 ]
机构
[1] 大连理工大学电子与信息工程学院
[2] 大连交通大学电气信息学院
关键词
语音增强; 麦克风阵列; 混响; 倒谱;
D O I
暂无
中图分类号
TN912.35 [语音增强];
学科分类号
摘要
在小型视频会议系统中,影响语音处理系统性能的主要因素是房间混响效应。现有语音增强方法大都采用加性噪声模型,没有考虑混响;而基于倒谱的语音去混响方法大多计算复杂。为此,本文给出了一种改进的麦克风阵列倒谱域语音去混响方法。该方法首先计算含噪语音倒谱域的最小相位分量,并对其进行波束形成,再进行低通滤波;然后利用人耳对相位信息的不敏感性,采用含噪语音的相位来合成增强后的语音信号,从而有效地降低了运算量。仿真结果表明,该方法在混响环境下能有效地改善语音质量。
引用
收藏
页码:720 / 723
页数:4
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