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    ASIA unversity > 資訊學院 > 資訊傳播學系 > 會議論文 >  Item 310904400/65310


    Please use this identifier to cite or link to this item: http://asiair.asia.edu.tw/ir/handle/310904400/65310


    Title: Refinement of Enhanced Speech Using Block-Directional-Median Filter and Harmonic Regeneration Approach
    Authors: Lu, Ching-Ta;Tseng, Kun-Fu;Chen, Chih-Tsung
    Contributors: 資訊傳播學系
    Keywords: speech enhancement, noise reduction, block-directional-median filter, post-processing, harmonic regeneration
    Date: 2013-12
    Issue Date: 2013-12-18 10:41:48 (UTC+8)
    Abstract: This study proposes a post-processor to improve the harmonic structure of a vowel in enhanced speech, enabling speech quality to be improved. Initially, a speech enhancement algorithm is employed to reduce background noise for noisy speech. Hence the enhanced speech is post-processed by a block-directional-median (BDM) filter to reduce the musical effect of residual noise. Since the harmonic spectra are impacted by background noise and a speech enhancement process, the quality of a vowel is deteriorated. A harmonic regenerated method is developed to improve the quality of post-processed speech. Experimental results show that the proposed method can improve the quality of post-processed speech by adequately regenerating harmonic spectra.
    Relation: 2013全國計算機會議
    Appears in Collections:[資訊傳播學系] 會議論文

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