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Conference Paper

Perceptual Evaluation of a Coherence Suppressing Down-Mix Method

Authors: Adami, Alexander; Habets, Emanuë A. P.l; Herre, Jürgen

AES Conference: 55th International Conference: Spatial Audio · Paper 5-1 · August 2014

Abstract

In many application scenarios where a given number of input channels have to be mixed into a fewer number of output channels, comb-filter-free down-mixing is needed. Comb-filter artifacts originate from a superposition of highly correlated but phase shifted signal parts. To mitigate those artifacts active post-processing or temporal alignment prior to the mixing can, for instance, be applied. Recently, a new stereo-to-mono down-mix method using a different paradigm has been proposed, where coherent signal parts are identified and suppressed in one channel prior to mixing. This paper reviews this method and evaluates its performance perceptually compared to previous methods with a listening test.

Details

Published in
AES Conference: 55th International Conference: Spatial Audio
Paper number
5-1
Publication date
August 6, 2014
Session subject
Spatial Sound Psychophysics
Affiliation
International Audio Laboratories Erlangen, Erlangen, Germany (See document for exact affiliation information.)
Type
Conference Paper