文章基本信息

标题：Combination of Beam forming and Kalman filter Techniques for Speech Enhancement
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作者：G. Ramesh Babu ; Rameshwara Rao
期刊名称：International Journal of Computer Science and Communication Networks
电子版ISSN：2249-5789
出版年度：2011
卷号：1
期号：3
页码：338-343
出版社：Technopark Publications
摘要：In all speech communication settings the quality and intelligibility of speech is of utmost importance for ease and accuracy of information exchange. Kalman filter is an adaptive least square error filter that provides an efficient computational recursive solution for estimating a signal in presence of noises. Beamforming is another possible method of speech enhancement, because, the beamformer minimizes the output signal power but maintains signals from the desired direction. Hence, an optimized cascaded scheme is implemented using the advantages of Kalman filter and Beamforming where the Kalman filter technique followed by Beamforming reduces stationary as well as residual noise. The proposed hybrid method gives better SNR and PESQ values as compared to that of individual techniques, thereby improving the quality of the speech
关键词：Kalman filter; Beamforming; Cascaded scheme