Accession Number:

ADA516417

Title:

Human Validation of the AUDIB Auditory Perception Model for Rotarywing Aircraft

Descriptive Note:

Interim rept. Aug 2007-Mar 2008

Corporate Author:

AIR FORCE RESEARCH LAB WRIGHT-PATTERSON AFB OH HUMAN EFFECTIVENESS DIRECTORATE

Personal Author(s):

• Hoglund, Evelyn M.
• Iyer, Nandini
• Brungart, Douglas S.
• Mobley, Frank S.
• Hall, John A.
• Fernando, Joseph

Report Date:

2008-04-01

Pagination or Media Count:

65.0

Abstract:

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.

Descriptors:

• *AUDITORY PERCEPTION
• *HELICOPTERS
• HIGH SENSITIVITY
• EARPHONES
• ATMOSPHERIC SOUNDING
• ROTORS
• VOLUME
• SENSES(PHYSIOLOGY)

Subject Categories:

• Helicopters
• Anatomy and Physiology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE