Abstract

The paper summarizes the different test and modeling campaigns carried out in the EC-funded FET-Open project TWO!EARS (www.twoears.eu) for sound quality and Quality of Experience (QoE) evaluation of spatial audio reproduction technology like stereophony or Wave-field Synthesis (WFS). This work represents one of the two proof-of-concept application domains of the interactive listening model developed in TWO!EARS. One stream of our sound-quality-related work focused on listening tests and model development for the individual sound quality features localization and coloration. After briefly reviewing the modeling approaches for these individual features presented in more depth elsewhere, the paper presents data and modeling considerations for a set of pairwise preference listening tests, following a dedicated audio mixing and reproduction paradigm. For subsequent model development, the results are analyzed in different ways, for example in terms of the pairwise preference data directly, using the Bradley-Terry-Luce model and using multidimensional analysis techniques. Based on these analyses, different modeling approaches based on the TWO!EARS framework are presented. To conclude, considerations are provided on how multimodal interaction can affect preference selections, based on an additional test on the selection of the “sweet spot” in a spatial audio listening context.

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