This paper deals with perceptive test methodologies to assess speech quality of telecommunication systems. Faced with drawbacks of typical methodologies recommended by ITU-T, a new way to assess speech quality is investigated, by collecting reaction times and performances when subjects are achieving tasks involving degraded speech signals. A dual task with a digit recognition memory task and a letter recognition task is proposed. Three different quality levels are applied to audio signals describing digits and letters. The results show significant differences of performances and reaction times between the three quality levels.

Authors: Durin, Virginie; Gros, Laetitia; Hericher, Gilles
Affiliations: France Telecom;Laboratoire Psychologie et Neurosciences de la cognition(See document for exact affiliation information.)
AES Convention: 124 (May 2008) Paper Number: 7490
Publication Date: May 1, 2008
Subject: Psychoacoustics, Perception, and Listening Tests

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