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Indexed by:会议论文

Date of Publication:2007-06-03

Included Journals:EI、CPCI-S

Volume:4493

Issue:PART 3

Page Number:751-+

Abstract: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.