An analysis of the impact of packet loss, codecs and type of voice on internal parameters of P.563 model

This paper deals with an analysis of internal parameters of the P.563 non-intrusive quality prediction model forming an overall quality prediction of this model in the context of an impact of natural and synthesized speech degraded by packet loss (independent and dependent losses) and speech coding (ITU-T G.711 codec, ITU-T G.729AB codec and iLBC codec). A main aim of this paper is to identify dominant internal parameters of the P.563 model for all the investigated codecs and clp parameters by conducting two-way analysis of variance (ANOVA) tests on all internal parameters of the P.563 model. All the identified dominant internal parameters will be further used in an investigation of non-monotonic behavior of the P.563 model predictions in this context, reported for ITU-T G.729AB codec in [6].