厦门大学学报（自然科学版）2017，Vol.56Issue(5)：711-717,7.DOI:10.6043/j.issn.0438-0479.201612021
一种采用旁瓣增强的麦克风阵列抗混响算法
A Microphone-array De-reverberation Method Using Sidelobe Enhancement
摘要
Abstract
In many practical applications such as audio/video conferences,man-machine interfaces,speech recognitions,the reverber-ation leads to significant degradation of microphone array speech processing.However,while the conventional de-reverberation meth-ods,such as inverse-filtering method,need to obtain accurate room transmission responses,the classic beam-forming method only yields limited performance.Based on the Generalized Sidelobe Canceller (GSC)structure,this paper proposes a novel microphone-ar-ray de-reverberation method to achieve sidelobe exploitation.First,we use the contemporary beam-forming method to initially obtain the direct speech signals.Then we adopt the adaptive iterative algorithm to explore reverberation components in sidelobes for further enhancements.Finally,the error of the sidelobe enhancement is adopted as the reference noise of adaptive noise cancellation to achieve the de-reverberation.Experimental results show that the proposed method effectively improves the quality of speech signal under the reverberation environment.关键词
麦克风阵列/波束形成/广义旁瓣抵消器/抗混响处理Key words
microphone-array/beam-forming/generalized sidelobe canceller (GSC)/de-reverberation method分类
信息技术与安全科学引用本文复制引用
李剑汶,章宇栋,童峰,洪青阳..一种采用旁瓣增强的麦克风阵列抗混响算法[J].厦门大学学报（自然科学版）,2017,56(5):711-717,7.基金项目
福建省高校产学合作项目(2015H6019) （2015H6019）
福建省中青年教师教育科研项目(JA14008) （JA14008）
厦门市科技计划项目(3502Z20153002) （3502Z20153002）
