麦克风阵列的协同自适应滤波语音增强方法

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英文篇名：A speech enhancement method with collaborative adaptive filtering and microphone array 作者：赵益波 ; 杨蕾 ; 严涛 ; 李春彪 英文作者：ZHAO Yibo;YANG Lei;YAN Tao;LI Chunbiao;School of Electronics & Information Engineering,Nanjing University of Information Science & Technology;Jiangsu Collaborative Innovation Center for Atmospheric Environment and Equipment Technology; 关键词：语音增强 ; 麦克风阵列 ; 协同自适应滤波 ; 脉冲噪声 ; 高斯噪声 ; 非线性滤波 英文关键词：speech enhancement;;microphone array;;collaborative adaptive filtering;;impulse noise;;Gaussian noise;;non-linear filtering 中文刊名：XDDJ 英文刊名：Modern Electronics Technique 机构：南京信息工程大学电子与信息工程学院;江苏省大气环境与装备技术协同创新中心; 出版日期：2019-04-11 14:24 出版单位：现代电子技术 年：2019 期：v.42;No.535 基金：江苏高校优势学科Ⅱ期建设工程资助项目;; 江苏省自然科学基金(SBK2018021196);; 国家自然科学基金(11504176)~~ 语种：中文; 页：XDDJ201908004 页数：5 CN：08 ISSN：61-1224/TN 分类号：24-28

摘要

在麦克风阵列语音增强方法中,传统的广义旁瓣抵消器在处理存在显著脉冲噪声的语音信号时效果较差。为提高在脉冲噪声干扰下的语音信号增强效果,提出一种麦克风阵列的协同自适应滤波语音增强方法。该方法采用协同自适应滤波取代线性自适应滤波,基于NLMS算法导出了滤波器权值和协同因子的自适应更新算法。仿真实验结果表明,所提方法能有效地消除掉语音信号的脉冲噪声和高斯噪声,克服线性自适应滤波对非线性脉冲噪声的不敏感性,比广义旁瓣抵消器效果优越很多。
        Among the microphone array-based speech enhancement methods,the conventional generalized sidelobe canceller(GSC)has a poor effect in processing speech signals with obvious impulse noises. Therefore,a speech enhancement method with collaborative adaptive filtering and microphone array is proposed to improve the enhancement effect of speech signals under the impulse noise interference. In the method,the collaborative adaptive filtering is used to replace the linear adaptive filtering.The filter weight and co-factor adaptive updating algorithm is derived on the basis of the NLMS algorithm. The proposed method can effectively eliminate the impulse noise and Gaussian noise of speech signals,overcome the insensitivity of linear adaptive filtering to nonlinear impulse noises,and has a more superior effect than the GSC.

引文

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