
To evaluate the performance of both interfaces we asked participants go for a drive in a car simulator (this was a very popular user study in our lab).

We disassembled a computer mouse and attached it to the steering wheel to allow users to manipulate the interfaces without taking their hands of the steering wheel.


They could "click left" to select an item or go down in the hierarchy or they could "click right" to go up again. By using the scrolling wheel they could cycle through the items currently displayed.
Related Publications
Sodnik, J., Dicke, C., Tomazie, S. and Billinghurst, M. A user study of auditory versus visual interfaces for use while driving Int. J. Human-Computer Studies, 66. 318–332. download
Sodnik, J., Tomazie, S., Dicke, C. and Billinghurst, M., Spatial auditory interface for an embedded communication device in a car. in ACHI 2008, (2008), IEEE Computer Society, pp. 69-76 (best paper award). download
Dicke, C., Sodnik, J. and Billinghurst, M., Spatial Auditory Interfaces Compared to Visual Interfaces for Mobile Use in a Driving Task. in Ninth International Conference on Enterprise Information Systems (ICEIS), June 12-16, 2007, (Funchal, Madeira, Portugal, 2007), 282-285. download
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