Non-linearities in communication networks introduce time-varying distortions which must be assessed over extended periods. We describe an experiment designed to elucidate rules for the accumulation of subjective speech quality opinions. Results show a link between Mean Opinion Scores for sentences and corresponding scores for longer passages, with implications for the design of objective measurement tools providing predictions of subjective quality.

Authors: Gray, Phil; Massara, Rob; Hollier, Mike
Affiliations: BT Research Laboratories, Martlesham Heath, Ipswich, UK ; University of Essex, Colchester, Essex, UK(See document for exact affiliation information.)
AES Convention: 103 (September 1997) Paper Number: 4588
Publication Date: September 1, 1997
Subject: Perception and Subjective Tests

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