AUDITORY LOCALIZATION OF A HELICOPTER -FROM GROUND POSITION

Abstract

Three studies of unaided auditory localization of a helicopter are summarized. In each, a UH-1B helicopter in flight was the sound source and was localized by subjects on the ground. Absolute mean angular errors of different groups and under different conditions ranged from 8 degrees to 24 degrees and more, with smaller errors found under quieter conditions and at greater target ranges. Error size was not significantly affected by: flight direction; altitude changes from low nap-of-the-earth (20 - 60 feet) to low contour (100 - 110 feet); interfering noises from 90-mm gunfire; or wearing a combat helmet. There were significant differences associated with interfering noise from passing vehicles and with subjects' auditory acuity.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1963
Accession Number
AD0426435

Entities

People

  • Robert W. Bauer

Organizations

  • Human Engineering Laboratory

Tags

Communities of Interest

  • Biomedical
  • Weapons Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Aircrafts
  • Altitude
  • Analysis Of Variance
  • Armored Personnel Carriers
  • Biological Sciences
  • Cameras
  • Engineering
  • Environment
  • Hearing
  • Hearing Loss
  • Helicopters
  • Human Factors Engineering
  • Military Research
  • Psychology
  • Statistical Analysis
  • Vehicles

Readers

  • Acoustics.
  • Aviation Science / Aeronautics.
  • Vision Science/Vision Psychology/Cognitive Neuroscience.