Assessment of speech quality degradation indicators for “continuity” dimension in super wideband telephony context

Abstract

This paper presents a study about the performance of Quality Degradation Indicators (QDIs) developed to diagnose and quantify the effect of time-varying degradations pertaining to the "Continuity" dimension of voice quality in the context of Super wideband (50-14000 Hz) telephony. This dimension is subdivided into three sub-dimensions: Interruptedness, Additive Artifacts and Musical Noise. In this work, only the two first subdimensions were considered. Our analysis concluded on the reliability of some indicators and particularly of an indicator designed to quantify the impact of short interruptions. The other sub-dimensions need supplementary investigation to be accurately modeled.Index Terms-perceptual dimensions, voice quality degradation indicators, Super wideband (SWB) telephony, objective models