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Integration of noise reduction algorithms for Aurora2 task   
摘  要:   Abstract To achieve high recognition performance,for a wide variety of noise and for a wide range of signal-to-noise ratios, this pa- per presents the integration of four noise reduction algorithms: spectral subtraction with smoothing of time direction, temporal domain SVD-based speech enhancement, GMM-based speech estimation and KLT-based comb-filtering. Recognition results on the Aurora2 task show,that the effectiveness of these algo- rithms and their combinations,strongly depends on noise condi- tions, and excessive noise reduction tends to degrade recogni- tion performance,in multicondition training.
发  表:   2003

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