Speech dereverberation method based on spectral subtraction and spectral line enhancement

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• 作者：Zhe Chen ; Rui Wang ; Fuliang Yin ; ^{flyin@dlut.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Bingqian Wang ; Wenwen Peng
• 关键词：Dereverberation ; Spectral subtraction ; Spectral line enhancement ; Adaptive post-filtering
• 刊名：Applied Acoustics
• 出版年：2016
• 出版时间：November 2016
• 年：2016
• 卷：112
• 期：Complete
• 页码：201-210
• 全文大小：1610 K

文摘

Speech signals recorded with a distant microphone usually are interfered by the spatial reverberation in the room, which severely degrades the clarity and intelligibility of speech. A speech dereverberation method based on spectral subtraction and spectral line enhancement is proposed in this paper. Following the generalized statistical reverberation model, the power spectrum of late reverberation is estimated and removed from the reverberation speech by the spectral subtraction method. Then, according to the human auditory model, a spectral line enhancement technique based on adaptive post-filtering is adopted to further eliminate the reverberant components between adjacent speech formants. The proposed method can effectively suppress the spatial reverberation and improve the auditory perception of speech. The subjective and objective evaluation results reveal that the perceptual quality of speech is greatly improved by the proposed method.