Summary
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Speech Enhancement Based on Perceptually Comfortable Residual Noise Jong Won SHIN Joon-Hyuk CHANG Nam Soo KIM Publication IEICE TRANSACTIONS on Communications Vol.E90-B No.11 pp.3323-3326 Publication Date: 2007/11/01 Online ISSN: 1745-1345 DOI: 10.1093/ietcom/e90-b.11.3323 Print ISSN: 0916-8516 Type of Manuscript: LETTER Category: Multimedia Systems for Communications Keyword: speech enhancement, residual noise, perceptually comfortable noise, Full Text: PDF(75.5KB)>>
Summary: In this letter, we propose a novel approach to speech enhancement, which incorporates a new criterion based on residual noise shaping. In the proposed approach, our goal is to make the residual noise perceptually comfortable instead of making it less audible. A predetermined `comfort noise' is provided as a target for the spectral shaping. Based on some assumptions, the resulting spectral gain function turns out to be a slight modification of the Wiener filter while requiring very low computational complexity. Subjective listening test shows that the proposed algorithm outperforms the conventional spectral enhancement technique based on soft decision and the noise suppression implemented in IS-893 Selectable Mode Vocoder. | |||||
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