Huo, Lu; Heute, Ulrich (Institute for Circuit and System Theory, Christian-Albrechts-University of Kiel, 24143 Kiel, Germany)
Wältermann, Marcel; Möller, Sebastian (Deutsche Telekom Laboratories, Berlin Institute of Technology, 10587 Berlin, Germany)
In a previous study three dimensions have been found relevant for speech-transmission quality: “coloration”,“ discontinuity”, and “noisiness”. The present paper focuses on further decomposing and instrumentally measuring the dimension “discontinuity”. The auditory experiments revealed three so called sub-dimensions (SD): “Interruptedness”, “additive artifacts”, and “musical noise classification”. A two-step prediction model is thus developed for quality estimation: Firstly, the sub-dimensions are predicted by the combination of instrumentalmeasures. Secondly, “discontinuity” is estimated by combining the extracted sub-dimensions. A correlation of ρ = 0.90 can be achieved.