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Convention Paper

Scalable Audio Coder with Iterative Auditory Masking

Authors: Philippe, Pierrick; Veaux, Christophe

AES Convention 120 · Paper 6750 · May 2006

Abstract

In this paper, reducing the cost of scalability is investigated. A coding scheme based on cascaded MDCT-transform is presented, for which masking thresholds are iteratively calculated from the transform coefficients quantized at previous layers. As a result, the masking thresholds are updated at the decoder in the same way as at the encoder without the need to transmit explicit information such as scale factors. By eliminating this overhead, this approach significantly improves the coding efficiency. It is also shown that further improvements are made possible by allowing the transmission of some side information depending on the frame or on the layer.

Details

Published in
AES Convention 120
AES Convention
120
Paper number
6750
Publication date
May 6, 2006
Session subject
Low Bit-Rate Audio Coding
Affiliation
France Telecom R&D (See document for exact affiliation information.)
Type
Convention Paper