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Speech enhancement using harmonic regeneration

Cyril Plapous 1 Claude Marro 1 Pascal Scalart 2 
2 R2D2 - Reconfigurable and Retargetable Digital Devices
IRISA - Institut de Recherche en Informatique et Systèmes Aléatoires, INRIA Rennes, ENSSAT - École Nationale Supérieure des Sciences Appliquées et de Technologie
Abstract : This paper addresses the problem of single microphone speech enhancement in noisy environments. Common short-time noise reduction techniques introduce harmonic distortion in enhanced speech because of the non reliability of estimators for small signal-to-noise ratios. We propose a new method called Harmonic Regeneration Noise Reduction technique which solves this problem. A fully harmonic signal is calculated based on the distorted signal using a non-linearity to regenerate harmonics in an efficient way. This artificial signal is then used to compute a suppression gain able to preserve the speech harmonics. This method is theoretically analyzed, then objective and formal subjective results are given and show a significant improvement compared to classical noise reduction techniques.
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https://hal.inria.fr/inria-00482692
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Submitted on : Tuesday, May 11, 2010 - 11:05:19 AM
Last modification on : Friday, February 4, 2022 - 3:16:34 AM
Long-term archiving on: : Thursday, September 16, 2010 - 2:01:56 PM

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  • HAL Id : inria-00482692, version 1

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Cyril Plapous, Claude Marro, Pascal Scalart. Speech enhancement using harmonic regeneration. IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP'2005), Mar 2005, Philadelphia, United States. ⟨inria-00482692⟩

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