Publications in Scientific Journals:

M. Bernhard, K. Grosse, M. Wimmer:
"Bi-modal Task Faciliation in a Virtual Traffic Scenario through Spatialized Sound Rendering";
ACM Transactions On Applied Perception, 8 (2011), 4; 1 - 22.

English abstract:
Audio rendering is generally used to increase the realism of Virtual Environments (VE). In addition, audio rendering may also improve the performance in specifi c tasks carried out in interactive applications such as games or simulators.

In this paper we investigate the e ffect of the quality of sound rendering on task performance in a task which is inherently vision dominated. The task is a virtual traffic gap crossing scenario with two elements: fi rst, to discriminate crossable and uncrossable gaps in oncoming traffic, and second, to find the right timing to start crossing the street without an accident.

A study was carried out with 48 participants in an immersive Virtual Environment setup with a large screen and headphones. Participants were grouped into three di fferent conditions. In the fi rst condition, spatialized audio rendering with head-related transfer function (HRTF) filtering was used. The second group was tested with conventional stereo rendering, and the remaining group ran the experiment in a mute condition.

Our results give a clear evidence that spatialized audio improves task performance compared to the unimodal mute condition. Since all task-relevant information was in the participants' field-of-view, we conclude that an enhancement of task performance results from a bimodal advantage due to the integration of visual and auditory spatial cues.

audio-visual perception, virtual environments, pedestrian safety, bimodal task faciliation, head related transfer functions

Electronic version of the publication:

Created from the Publication Database of the Vienna University of Technology.