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The Plausibility of a String Quartet Performance in Virtual Reality

Bergstrom, I; Azevedo, S; Papiotis, P; Saldanha, N; Slater, M; (2017) The Plausibility of a String Quartet Performance in Virtual Reality. In: Steinicke, Frank and Mohler, Betty and Babu, Sabarish V. and Interrante, Victoria, (eds.) IEEE Transactions on Visualization and Computer Graphics - IEEE Virtual Reality Conference Proceedings 2017. (pp. pp. 1332-1339). IEEE: Los Angeles, California, USA. Green open access

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We describe an experiment that explores the contribution of auditory and other features to the illusion of plausibility in a virtual environment that depicts the performance of a string quartet. ‘Plausibility’ refers to the component of presence that is the illusion that the perceived events in the virtual environment are really happening. The features studied were: Gaze (the musicians ignored the participant, the musicians sometimes looked towards and followed the participant’s movements), Sound Spatialization (Mono, Stereo, Spatial), Auralization (no sound reflections, reflections corresponding to a room larger than the one perceived, reflections that exactly matched the virtual room), and Environment (no sound from outside of the room, birdsong and wind corresponding to the outside scene). We adopted the methodology based on color matching theory, where 20 participants were first able to assess their feeling of plausibility in the environment with each of the four features at their highest setting. Then five times participants started from a low setting on all features and were able to make transitions from one system configuration to another until they matched their original feeling of plausibility. From these transitions a Markov transition matrix was constructed, and also probabilities of a match conditional on feature configuration. The results show that Environment and Gaze were individually the most important factors influencing the level of plausibility. The highest probability transitions were to improve Environment and Gaze, and then Auralization and Spatialization. We present this work as both a contribution to the methodology of assessing presence without questionnaires, and showing how various aspects of a musical performance can influence plausibility.

Type: Proceedings paper
Title: The Plausibility of a String Quartet Performance in Virtual Reality
Event: IEEE Virtual Reality Conference (VR) - 2017
Location: Los Angeles, CA
Dates: 18 March 2017 - 22 March 2017
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/TVCG.2017.2657138
Publisher version: https://doi.org/10.1109/TVCG.2017.2657138
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: presence, plausibility, place illusion, user studies, experimental methods, multimodal interaction, entertainment
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Computer Science
URI: https://discovery.ucl.ac.uk/id/eprint/1550431
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