Block Smoothed Sigmoid-Based Shrinkage in Time-Frequency Domain for Robust Audio Denoising

Van Khanh Mai 1, 2 Dominique Pastor 3, 1 Abdeldjalil Aissa El Bey 4, 1
3 Lab-STICC_IMTA_CID_TOMS
Lab-STICC - Laboratoire des sciences et techniques de l'information, de la communication et de la connaissance
4 Lab-STICC_IMTA_CACS_COM
Lab-STICC - Laboratoire des sciences et techniques de l'information, de la communication et de la connaissance
Abstract : In this paper, we propose a novel robust method for short-time spectral amplitude (STSA) estimation in audio denoising. This method extends the smoothed sigmoid-based shrinkage (SSBS), which does not require any prior information about the probability distribution of the signal of interest. With regard to audio processing, the SSBS method yields better performance in terms of noise reduction but nevertheless introduces significant musical noise. In order to benefit from non-diagonal processing, which removes background noise without introducing musical noise, two non-diagonal SSBS are derived. First, the decision directed approach is incorporated into the SSBS method. Second, the time-frequency domain is divided into rectangular blocks and then, a SSBS function is applied to estimate the spectral amplitude in each block. The experimental results demonstrate the relevance of the proposed methods both in terms of speech quality and intelligibility via objective criteria.
Type de document :
Communication dans un congrès
9th International Symposium on Signal, Image, Video and Communications (ISIVC), Nov 2018, Rabat, Morocco. Proceedings 9th International Symposium on Signal, Image, Video and Communications (ISIVC), 2018
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https://hal.archives-ouvertes.fr/hal-01893712
Contributeur : Bibliothèque Télécom Bretagne <>
Soumis le : jeudi 11 octobre 2018 - 16:19:51
Dernière modification le : jeudi 20 décembre 2018 - 09:14:01
Document(s) archivé(s) le : samedi 12 janvier 2019 - 14:50:06

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  • HAL Id : hal-01893712, version 1

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Van Khanh Mai, Dominique Pastor, Abdeldjalil Aissa El Bey. Block Smoothed Sigmoid-Based Shrinkage in Time-Frequency Domain for Robust Audio Denoising. 9th International Symposium on Signal, Image, Video and Communications (ISIVC), Nov 2018, Rabat, Morocco. Proceedings 9th International Symposium on Signal, Image, Video and Communications (ISIVC), 2018. 〈hal-01893712〉

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