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Human Validation of the AUDIB Auditory Perception Model for Rotarywing Aircraft
Interim rept. Aug 2007-Mar 2008
AIR FORCE RESEARCH LAB WRIGHT-PATTERSON AFB OH HUMAN EFFECTIVENESS DIRECTORATE
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This study compares computational auditory detection model predictions against a corresponding large sample of human sound jury data points obtained in the laboratory. Helicopter and ambient soundscape signals were obtained from high sensitivity recordings in the field. Playback in the laboratory was achieved under high fidelity large volume headphones calibrated to accommodate helicopter primary rotor frequencies with minimal distortion above human sensation level. All sound jury members completed at least 12,000 trials detecting helicopters against wilderness, rural, suburban, and a variety of urban soundscapes, to represent the spectrum of potential environments involved in a real world scenario. Analysis compares the human sound jury performance against a contemporary computational auditory detection model, called AUDIB, developed by the U.S. Army and NASA.
APPROVED FOR PUBLIC RELEASE