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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 psychoacoustic model. The main advantage of such a scheme is reduced computational complexity. The proposed approach was implemented in a Laguerre-based linear prediction scheme, and its performance was evaluated in comparison with a Laguerrebased linear prediction approach controlled by the ISO MPEG-1 Layer I–II model, as well as with one of the latest spectral integration–based psychoacoustic models. Listening tests clearly demonstrate the viability of the proposed method.
Author (s): Biswas, Arijit; den Brinker, Albertus C.
Affiliation:
Technical University Eindhoven, Eindhoven, The Netherlands; Philips Research Laboratories, Eindhoven, The Netherlands
(See document for exact affiliation information.)
Publication Date:
2006-12-06
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Biswas, Arijit; den Brinker, Albertus C.; 2006; Perceptually Biased Linear Prediction [PDF]; Technical University Eindhoven, Eindhoven, The Netherlands; Philips Research Laboratories, Eindhoven, The Netherlands; Paper ; Available from: https://aes2.org/publications/elibrary-page/?id=13894
Biswas, Arijit; den Brinker, Albertus C.; Perceptually Biased Linear Prediction [PDF]; Technical University Eindhoven, Eindhoven, The Netherlands; Philips Research Laboratories, Eindhoven, The Netherlands; Paper ; 2006 Available: https://aes2.org/publications/elibrary-page/?id=13894