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Convention Paper

QESTRAL (Part 3): System and Metrics for Spatial Quality Prediction

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

AES Convention 125 · Paper 7597 · October 2008

Abstract

The QESTRAL project aims to develop an artificial listener for comparing the perceived quality of a spatial audio reproduction against a reference reproduction. This paper presents implementation details for simulating the acoustics of the listening environment and the listener's auditory processing. Acoustical modelling is used to calculate binaural signals and simulated microphone signals at the listening position, from which a number of metrics corresponding to different perceived spatial aspects of the reproduced sound field are calculated. These metrics are designed to describe attributes associated with location, width and envelopment attributes of a spatial sound scene. Each provides a measure of the perceived spatial quality of the impaired reproduction compared to the reference reproduction. As validation, individual metrics from listening test signals are shown to match closely subjective results obtained, and can be used to predict spatial quality for arbitrary signals.

Details

Published in
AES Convention 125
AES Convention
125
Paper number
7597
Publication date
October 6, 2008
Session subject
Spatial Audio Quality
Affiliation
University of Surrey; DJM Consultancy; Bang & Olufsen A/S (See document for exact affiliation information.)
Type
Convention Paper