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The Plausibility of a String Quartet Performance in Virtual Reality.

Ilias Bergstrom, Sergio Azevedo, Panos Papiotis

    IEEE Transactions on Visualization and Computer Graphics
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    Area of Science:

    • Virtual Reality
    • Human-Computer Interaction
    • Auditory Perception

    Background:

    • Presence in virtual environments is crucial for user experience.
    • Plausibility, a component of presence, is the illusion that virtual events are real.
    • Auditory and visual cues significantly impact perceived realism.

    Purpose of the Study:

    • To investigate the contribution of auditory and visual features to plausibility in a virtual string quartet performance.
    • To develop a methodology for assessing presence without questionnaires.

    Main Methods:

    • Experiment involving 20 participants assessing plausibility.
    • Manipulation of features: Gaze, Sound Spatialization, Auralization, and Environment.
    • Color matching theory adapted for plausibility assessment, using Markov transition matrices.

    Main Results:

    • Environment and Gaze were the most influential factors for plausibility.
    • Improvements in Environment and Gaze yielded the highest probability transitions.
    • Auralization and Spatialization also contributed to enhanced plausibility.

    Conclusions:

    • Environmental factors and virtual agent behavior (Gaze) are critical for plausibility.
    • The developed methodology offers a novel approach to quantifying presence.
    • Optimizing auditory and visual elements enhances the realism of virtual musical performances.