Second ISCA/DEGA Tutorial and Research Workshop on Perceptual Quality of Systems

Berlin, Germany
September 4-6, 2006

Perceptual Dimensions of Wideband-transmitted Speech

Marcel Wältermann (1), Alexander Raake (2), Sebastian Möller (2)

(1) Institute of Communication Acoustics, Ruhr-University Bochum, Germany
(2) Deutsche Telekom Laboratories, TU Berlin, Germany

In this paper it is analyzed which perceptual dimensions are existent for speech that is transmitted over wideband telephone connections. Therefore, two auditory experiments with subsequent multidimensional analyses (multidimensional scaling and semantic differential) were carried out with a diverse set of mixed narrowband and wideband conditions. This revealed a mapping of the perceptual space with a dimensionality of four. The identified dimensions were labeled "continuity", "distance", "lisping", and "noisiness". By mapping those dimensions onto overall listening quality scores in a linear way, statements regarding the importance of single dimensions could be made for the given context. It turned out that "continuity" is the main contributor for overall listening quality.

Full Paper

Bibliographic reference.  Wältermann, Marcel / Raake, Alexander / Möller, Sebastian (2006): "Perceptual dimensions of wideband-transmitted speech", In PQS-2006, 103-108.