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Convention Paper

Comparison of Stereo Redundancy Reduction Schemes for an Ultra Low Delay Audio Coder

Authors: Albert, Tobias; Hirschfeld, Jens; Krämer, Ulrich; Schuller, Gerald; Wabnik, Stefan

AES Convention 122 · Paper 7003 · May 2007

Abstract

In our Ultra Low Delay Audio Coder (ULD) a pre-filter which is controlled by a psycho-acoustic model is followed by a quantizer and a predictive coder to code signals in the time-domain. The output of the predictor is entropy coded and transmitted. Predictor and entropy coder form the lossless redundancy reduction part of the coder.
Our goal is to improve the lossless redundancy-reduction part for stereo signals. We present and evaluate 6 different alternatives for the stereo redundancy reduction, and we combine those alternatives to obtain a higher compression ratio.

Details

Published in
AES Convention 122
AES Convention
122
Paper number
7003
Publication date
May 6, 2007
Session subject
Low Bit-Rate Audio Coding
Affiliation
Fraunhofer IDMT; Fraunhofer IIS (See document for exact affiliation information.)
Type
Convention Paper