Auditory display design for exploration in mobile audio-augmented reality

Authors:
Yolanda Vazquez-Alvarez;Ian Oakley;Stephen A. Brewster
Affiliations:
Glasgow Interactive Systems Group, School of Computing Science, University of Glasgow, Glasgow, UK G12 8QQ;Madeira-ITI, University of Madeira, Funchal, Portugal 9000-390;Glasgow Interactive Systems Group, School of Computing Science, University of Glasgow, Glasgow, UK G12 8QQ
Venue:
Personal and Ubiquitous Computing
Year:
2012

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Abstract

In this paper, we compare four different auditory displays in a mobile audio-augmented reality environment (a sound garden). The auditory displays varied in the use of non-speech audio, Earcons, as auditory landmarks and 3D audio spatialization, and the goal was to test the user experience of discovery in a purely exploratory environment that included multiple simultaneous sound sources. We present quantitative and qualitative results from an initial user study conducted in the Municipal Gardens of Funchal, Madeira. Results show that spatial audio together with Earcons allowed users to explore multiple simultaneous sources and had the added benefit of increasing the level of immersion in the experience. In addition, spatial audio encouraged a more exploratory and playful response to the environment. An analysis of the participants' logged data suggested that the level of immersion can be related to increased instances of stopping and scanning the environment, which can be quantified in terms of walking speed and head movement.