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Journal Article Open Access

Spatial Audio Quality Perception (Part 2): A Linear Regression Model

Authors: Conetta, Robert; Brookes, Tim; Rumsey, Francis; Zielinski, Slawomir; Dewhirst, Martin; Jackson, Philip; Bech, Søren; Meares, David; George, Sunish

Journal of the Audio Engineering Society · Volume 62 · Issue 12 · pp. 847–860 · December 2014

Abstract

The QESTRAL (Quality Evaluation of Spatial Transmission and Reproduction using an Artificial Listener) system is intended to be an artificial-listener-based evaluation system capable of predicting the perceived spatial quality degradations resulting from SAPs (Spatial Audio Processes) commonly encountered in consumer audio reproduction. A generalizable model employing just five metrics and two principal components performs well in its prediction of the quality over a range of program types. Commonly-encountered SAPs can have a large deleterious effect on several spatial attributes including source location, envelopment, coverage angle, ensemble width, and spaciousness. They can also impact timbre, and changes to timbre can then influence spatial perception. Previously obtained data was used to build a regression model of perceived spatial audio quality in terms of spatial and timbral metrics. In conjunction with two simple probe signals, the resulting model can form the core of an evaluation system.

Details

Publication
Journal of the Audio Engineering Society
Volume
62
Issue
12
Pages
847–860
Publication date
December 6, 2014
Affiliation
University of Surrey, Guildford, UK; Sandy Brown Associates LLP, UK; Logophon Ltd., Oxfordshire, UK; The Technical Schools, Suwalki, Poland; Bang & Olufsen a / s, Strüer, Denmark; DJM Consultancy, West Sussex, UK; BBC Research, UK; Harman Becker Automotive Systems GmbH, Germany (See document for exact affiliation information.)
Type
Journal Article