The impact of binaural auralizations on sound source localization and social presence in audiovisual virtual reality: converging evidence from placement and eye-tracking paradigms

URN to cite this document:

urn:nbn:de:bvb:355-epub-746867 Copy

DOI to cite this document:

10.5283/epub.74686 Copy

Roßkopf, Sarah ; Kroczek, Leon O.H. ; Stärz, Felix ; Blau, Matthias ; Van de Par, Steven ; Mühlberger, Andreas

License: Creative Commons Attribution 4.0 PDF - Published Version (1MB)

Date of publication of this fulltext: 17 Jan 2025 16:40

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Details

Item type:	Article
Open Access Type:	Gold (with APC)
Journal or Publication Title:	Acta Acustica
Publisher:	EDP Sciences
Volume:	8
Page Range:	p. 72
Date:	16 December 2024
Institutions:	Human Sciences > Institut für Psychologie > Lehrstuhl für Klinische Psychologie und Psychotherapie - Lehrstuhl für Psychologie VIII - Prof. Dr. Andreas Mühlberger
Projects (Historical):	Deutsche Forschungsgemeinschaft, DFG) project ID 422686707, SPP2236 – AUDICTIVE – Auditory Cognition in Interactive Virtual Environments
Identification Number:	Value Type 10.1051/aacus/2024064 DOI
Keywords:	Binaural auralizations / Virtual reality / Sound source localization / Subjective audio realism / Eye-tracking / Social presence / Head related impulse responses / Gaze / Attention
Dewey Decimal Classification:	100 Philosophy & psychology > 150 Psychology
Status:	Published
Refereed:	Yes, this version has been refereed
Created at the University of Regensburg:	Yes
Item ID:	74686

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Abstract

Virtual Reality (VR) enables the presentation of realistic audio-visual environments by combining head-tracked binaural auralizations with visual scenes. Whether these auralizations improve social presence in VR and enable sound source localization comparable to that of real sound sources is yet unclear. Therefore, we implemented two sound source localization paradigms (speech stimuli) in a ...

Abstract

Virtual Reality (VR) enables the presentation of realistic audio-visual environments by combining head-tracked binaural auralizations with visual scenes. Whether these auralizations improve social presence in VR and enable sound source localization comparable to that of real sound sources is yet unclear. Therefore, we implemented two sound source localization paradigms (speech stimuli) in a virtual seminar room. First, we measured localization continuously using a placement task. Second, we measured gaze as a naturalistic behavior. Forty-nine participants compared three auralizations based on measured binaural room impulse responses (BRIRs), simulated BRIRs, both with generic and individual head-related impulse responses (HRIRs), with loudspeakers and an anchor (gaming audio engine). In both paradigms, no differences were found between binaural rendering and loudspeaker trials concerning ratings of social presence and subjective realism. However, sound source localization accuracy of binaurally rendered sound sources was inferior to loudspeakers. Binaural auralizations based on generic simulations were equivalent to renderings based on individualized simulations in terms of localization accuracy but inferior in terms of social presence. Since social presence and subjective realism are strongly correlated, the implementation of plausible binaural auralizations is suggested for VR settings where high levels of (social) presence are relevant (e.g. multiuser interaction, VR exposure therapy).

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Metadata last modified: 17 Jan 2025 16:46

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