An objective prediction model for the sensation of sound envelopment in five-channel reproduction is important for evaluating spatial quality. Regression analysis was used to map the listening test scores on a variety of audio sources and the objective measures extracted from the recordings themselves. By following an iterative process, a prediction model with five features was constructed. The validity of the model was tested in a second set of subjective scores and showed a correlation coefficient of 0.9. Among the five features: sound distribution and interaural cross-correlation contributed substantially to the sensation of envelopment. The model did not require access to the original audio. Scales used for listening tests were defined by audible anchors.

Authors: George, Sunish; Zielinski, Slawomir; Rumsey, Francis; Jackson, Philip; Conetta, Robert; Dewhirst, Martin; Meares, David; Bech, Søren
Affiliations: University of Surrey, Guildford, Surrey, UK; DJM Consultancy, West Sussex, UK, on behalf of BBC Research, UK; Bang & Olufsen a / s, Struer, Denmark(See document for exact affiliation information.)
JAES Volume 58 Issue 12 pp. 1013-1031; December 2010
Publication Date: February 3, 2011

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