Date of Award

12-2007

Document Type

Thesis

Degree Name

Master of Science (MS)

Legacy Department

Applied Psychology

Advisor

Tyrrell, Richard A

Committee Member

Pagano , Chris

Committee Member

Pak , Rich

Abstract

Audio displays have potential to convey spatial information to users without taxing their visual resources, but have been shown to annoy some users. Musical stimuli have the potential to reduce user annoyance, but their potential to be localized spatially is untested. These experiments tested how well musical stimuli can be localized at different volumes and when using different spatial processing techniques to manipulate the spatial information.
The two experiments presented participants with brief musical stimuli simulating spatial locations between -40¡ and 40¡ from the saggital plane and asked participants to report the perceived direction of the sound. In Experiment 1, two spatial processing techniques were compared, and it was determined that a simple processing technique involving only manipulating the relative volume of two speakers is as effective as a more resource-intensive processing technique that incorporates multiple spatial cues. Experiment 2 manipulated the overall volume from 55 dBA to 65 dBA and showed that, throughout this range, there are no significant differences in spatial location ability.

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Psychology Commons

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