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论文类型：会议论文

发表时间：2007-06-03

收录刊物：EI、CPCI-S

卷号：4493

期号：PART 3

页面范围：751-+

摘要：The speech enhancement method based on blind source separation and post-processing in subband [1] is an effective method in noise and reverberation environments. Performance analysis and computer simulations indicate that its performance is degraded under uncorrelated or mild correlated noise cases, and sometimes it might cause distortion of the enhanced signals. To apply the method in real environment, some improvements have been made on it. These are that adaptive noise cancellers are only used in the subbands with poor separation results and the independent component analysis (ICA) operations in low frequency bands are replaced by the efficient time-frequency masking method. Experimental results show the effectiveness of the proposed method.