GVU Technical Report Number:
GIT-GVU-93-32
Title:
The Perception of Location Using Synthetic Auditory Localization Cues:
Accuracy and the Effects of Stimulus Bandwidth
Authors:
Mark D. Lee
David A. Burgess
Abstract:
The present experiment was designed to examine the accuracy with which
people can localize sounds generated by three-dimensional or 3-D audio
devices. Sixty subjects listened to two second pulse trains of white noise,
using bandwidths of either 10 kHz, 12 kHz, or 16 kHz. A forced choice
paradigm was used in which subject indicated that sound came from one of six
azimuth locations (30, 90, 150, 210, 270, or 330 degrees) and one of three
elevation locations (- 48, zero or level, and 48 degrees). Stimuli could also
come from directly overhead. In all, nineteen possible locations were used
(six azimuth by three elevation, plus straight up). Results indicated that
with current technology and theoretical knowledge about auditory
localization, performance is quite poor. Results are discussed in terms
of the application of 3-D audio technology to aircraft cockpits.
Keywords:
Auditory localization, auditory displays, stimulus band-width
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