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Direct mdct domain psychoacoustic modeling

Suresh, K and Suresh, K (2007) Direct mdct domain psychoacoustic modeling. In: International Symposium on Signal Processing and Information Technology, 2007 IEEE, 15-18 Dec. 2007 , Giza.

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Abstract

We extend the recently proposed spectral integration based psychoacoustic model for sinusoidal distortions to the MDCT domain. The estimated masking threshold additionally depends on the sub-band spectral flatness measure of the signal which accounts for the non- sinusoidal distortion introduced by masking. The expressions for masking threshold are derived and the validity of the proposed model is established through perceptual transparency test of audio clips. Test results indicate that we do achieve transparent quality reconstruction with the new model. Performance of the model is compared with MPEG psychoacoustic models with respect to the estimated perceptual entropy (PE). The results show that the proposed model predicts a lower PE than other models.

Item Type: Conference Paper
Additional Information: Copyright 2007 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Keywords: Psychoacoustics;masking threshold;audio coding.
Department/Centre: Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited: 13 Oct 2011 08:47
Last Modified: 13 Oct 2011 08:47
URI: http://eprints.iisc.ernet.in/id/eprint/41380

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