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Conference Paper

Multichannel Surround Format Conversion and Generalized Upmix

Authors: Goodwin, Michael M.; Jot, Jean-Marc

AES Conference: 30th International Conference: Intelligent Audio Environments · Paper 30 · March 2007

Abstract

Recent research in the fields of spatial audio coding, multichannel upmix and source separation has demonstrated that frequency-domain analysis-synthesis techniques enable effective spatial manipulation or coding of two-channel or multichannel audio recordings. In this paper, we extend the application of these techniques to the problem of playing back a multichannel recording, intended for playback over a pre-defined loudspeaker layout, over a different layout potentially comprising a different number of channels. After reviewing some possible time-domain solutions, we describe a frequency-domain method based on spatial audio coding using an intermediate mono downmix, and introduce an improved method which does not involve an intermediate reduction to mono.

Details

Published in
AES Conference: 30th International Conference: Intelligent Audio Environments
Paper number
30
Publication date
March 6, 2007
Session subject
Intelligent Audio Environments
Affiliation
Creative ATC (See document for exact affiliation information.)
Type
Conference Paper