Xu, X; Oberman, T; Mitchell, A; Huang, S; Aletta, F; Kang, J; (2023) Effects of Visual Stimulus on Soundscape Perception: A Pilot Study Using Immersive Virtual Reality (IVR). In: Proceedings of the 10th Convention of the European Acoustics Association Forum Acusticum 2023. European Acoustics Association Forum Acusticum: Torino, Italy.

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Abstract

Due to its rapid development, immersive technologies are being implemented in a growing number of industries. Immersive virtual reality also plays an important role in the field of the built environment, due to its application in visualising imagined spaces, but also recording and reproducing the real-world environments, in laboratory conditions. Since laboratory experiments are one of the essential soundscape research methods where visual context can play an important role, a higher level of immersion is considered crucial to improve the ecological validity and subsequently also the accuracy of the results. Although the impact of visual immersion during soundscape assessments in a laboratory is important, its direct effects on the perceptual models are still underinvestigated. This study proposed a visually immersive approach to soundscape research, which allowed for scene-switching and control, and questionnaire deployment inside a virtual reality environment. In this study, video material from the International Soundscape Database was used. The results have shown a correlation between perceived pleasantness and perceived eventfulness in the absence of the auditory stimulus. In addition, the ratio of road to water in an urban landscape was discovered to be a significant visual factor that influences the perceived soundscape.

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