Spatialized Auditory Displays

Award Information
Agency:
Department of Defense
Branch
Navy
Amount:
$70,000.00
Award Year:
1999
Program:
STTR
Phase:
Phase I
Contract:
n/a
Agency Tracking Number:
43908
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Advanced Cochlear Systems
1429 NW Gilman Blvd; Suite 265, Issaquah, WA, 98027
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Ben M Clopton
(425) 392-9436
Business Contact:
Ben M. Clopton
(425) 392-9436
Research Institution:
University of Michigan

4118 EECS Building; 1301 Beal Street
Ann Arbor, MI, 48109

Nonprofit college or university
Abstract
We will investigate the feasibility of a signal processing system that controls the perceived location of a virtual sound source for listeners wearing headphones. Starting from an approximate head-related transfer function (HRTF) individualized HRTFs will be adaptively approximated for observers in a psychophysical task. Average HRTFs have proven inadequate for consistently placing sound sources in azimuth and elevation, especially near the frontal midline. Recently developed adaptive algorithms permit the tailoring of generic HRTFs to individuals within training periods of acceptable durations. These transfer functions will be modeled as binaural spatial filters and implemented in real time using DSP processors under the control of a PC. This system will be used for preliminary psychophysical testing. Future systems will incorporate dynamic head position to further enhance the realization of spatialized auditory displays.

* information listed above is at the time of submission.

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