高技术通讯（英文版）2005，Vol.11Issue(4)：351-354,4.
Space discriminative function for microphone array robust speech recognition
Space discriminative function for microphone array robust speech recognition
摘要
Abstract
Based on W-disjoint orthogonality of speech mixtures, a space discriminative function was proposed to enumerate and localize competing speakers in the surrounding environments. Then, a Wiener-like post-filterer was developed to adaptively suppress interferences. Experimental results with a hands-free speech recognizer under various SNR and competing speakers settings show that nearly 69% error reduction can be obtained with a two-channel small aperture microphone array against the conventional single microphone baseline system. Comparisons were made against traditional delay-and-sum and Griffiths-Jim adaptive beamforming techniques to further assess the effectiveness of this method.关键词
speech recognition/array signal processing/microphone array/source localization/adaptive filteringKey words
speech recognition/array signal processing/microphone array/source localization/adaptive filtering分类
信息技术与安全科学引用本文复制引用
Zhao Xianyu,Ou Zhijian,Wang Zuoying..Space discriminative function for microphone array robust speech recognition[J].高技术通讯（英文版）,2005,11(4):351-354,4.基金项目
Supported by the High Technology Research and Development Programme of China (No. 2001AA114071). （No. 2001AA114071）
