Multichannel audio is increasingly ubiquitous in consumer audio applications such as satellite radio broadcast systems, surround sound playback systems, multichannel audio streaming and other emerging applications. These applications often present a challenging bandwidth constraint making parametric multichannel coding schemes attractive. Several techniques have been proposed recently to address this problem. Here we present a novel low bit rate 5 channel encoding system that has shown promising results. This technique called the Immersive Soundfield Rendition (ISR) System emphasizes accurate reproduction of multi-band temporal envelope. The ISR system also incorporates a very low over-head (blind upmixing) mode. The proposed multichannel coding system has yielded promising results for multi-channel coding in the 0-12 kbps range. More information and audio demos will be available at http://ww.atc-labs.com/isr

Authors: Dubey, Chandresh; Ferreira, Anibel J. S.; Gupta, Richa; Sinha, Deepen
Affiliations: ATC Labs; University of Porto(See document for exact affiliation information.)
AES Convention: 121 (October 2006) Paper Number: 6875
Publication Date: October 1, 2006
Subject: Audio Coding

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