A perceptually biased linear prediction scheme is proposed for audio coding. Using only simple modifications of the coefficients defining the normal equations for a least-squares error, the spectral masking effects are mimicked in the prediction synthesis filter without using an explicit psycho-acoustic model. The main advantage of such a scheme is the reduced computational complexity. The proposed approach was implemented in a Laguerre-based Linear Prediction scheme and its performance has been evaluated in comparison with a Laguerre-based Linear Prediction approach controlled by the ISO MPEG-1 Layer I-II model, as well as with one of the latest spectral integration based psycho-acoustic models. Listening tests clearly demonstrate the viability of the proposed method.

Authors: Biswas, Arijit; den Brinker, Albertus C.
Affiliations: Philips Research Laboratories; Technische Universiteit Eindhoven(See document for exact affiliation information.)
AES Convention: 121 (October 2006) Paper Number: 6870
Publication Date: October 1, 2006 Import into BibTeX
Subject: Audio Coding
Permalink: https://www.aes.org/e-lib/browse.cfm?elib=13704

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