This paper describes the development of an unintrusive objective model, developed independently as a part of the QESTRAL project, for predicting the sensation of envelopment arising from commercially available 5-channel surround sound recordings. The model was calibrated using subjective scores obtained from listening tests that used a grading scale defined by audible anchors. For predicting subjective scores, a number of features based on Inter-aural Cross Correlation (IACC), Karhunen-Loeve Transform (KLT) and signal energy levels were extracted from recordings. The ridge regression technique was used to build the objective model and a calibrated model was validated using a listening test scores database obtained from a different group of listeners, stimuli and location. The initial results showed a high correlation between predicted and actual scores obtained from the listening tests.

Authors: George, Sunish; Zielinski, Slawomir; Rumsey, Francis; Conetta, Robert; Dewhirst, Martin; Jackson, Philip; Meares, David; Bech, Søren
Affiliations: Institute of Sound Recording, University of Surrey; DJM Consultancy; Bang & Olufsen A/S(See document for exact affiliation information.)
AES Convention: 125 (October 2008) Paper Number: 7599
Publication Date: October 1, 2008 Import into BibTeX
Subject: Spatial Audio Quality
Permalink: https://www.aes.org/e-lib/browse.cfm?elib=14750

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