Lossy data reduction through use of a suitable lossless coding system is proposed. The authors precede the lossless encoder by an adaptive noise-shaped quantizer which takes advantage of the auditory masking curve and reduces the wordlength prior to coding. If the decoded signal is encoded a second time, the resulting bit stream is exactly the same as the first encoding, thus avoiding the build-up of coding error when systems are cascaded.

Authors: Craven, Peter G.; Stuart, J. Robert
Affiliations: Algol Applications Ltd, East Challow, Oxon, Great Britain ; Meridian Audio Ltd, Huntingdon, Cambs, Great Britain(See document for exact affiliation information.)
AES Convention: 102 (March 1997) Paper Number: 4416
Publication Date: March 1, 1997
Subject: Audio Coding

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