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    ASIA unversity > 資訊學院 > 資訊傳播學系 > 會議論文 >  Item 310904400/8863

    Please use this identifier to cite or link to this item: http://asiair.asia.edu.tw/ir/handle/310904400/8863

    Title: Reduction of musical residual noise using spectral bin motion and homogeneous spectral bins merged approach
    Authors: Lu, Ching-Ta;Tseng, Kun-Fu;Liu, Lih-Cherng
    Contributors: Department of Information Communication
    Keywords: Computer science;Linguistics;Merging;Speech enhancement;Homogeneous spectral bin;Motion Vectors;Musical residual noise;Musical tones;Post processing;Residual noise;Speech enhancement system;Speech quality;Sub-bands
    Date: 2009
    Issue Date: 2010-04-08 20:30:32 (UTC+8)
    Publisher: Asia University
    Abstract: Musical residual noise is a major problem for a speech enhancement system. In this paper, we attempt to reduce the effect of musical residual noise by merging homogeneous spectral bins in an analysis block to mitigate the musical effect. Initially, we analyze the motion vector of each spectral bin. A motion difference which indicates a spectral bin being musical tone is then employed to adapt the merging threshold. In the case of a musical tone, the larger the value of the motion difference is, the more the number of the merged spectral bins is. It enables the spectral bins of a musical tone to vary smoothly over successive frames and among neighbour subbands. The effect of musical residual noise is accordingly mitigated. Experimental results show that the proposed post processing approach can efficiently reduce the effect of musical residual noise, while the speech quality can be well maintained.
    Relation: Proceedings of the IASTED International Conference on Advances in Computer Science and Engineering, ACSE 2009 :166-170
    Appears in Collections:[資訊傳播學系] 會議論文

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