AUDITORY FATIGUE FOLLOWING HIGH FREQUENCY PULSE TRAINS

Abstract

Large groups of young: men were exposed to high intensity pulse trains at 2.5 kc and examined continuously for subsequent acuity changes at 4 kc. Duty cycle varied from 3.4% tone-on to 100%, train length from 1-25 min., and sound pressure level (SPL) from 90-120 db. A new unit, the NOX, representing total cumulative fatigue over a 10-min. interval, was invented to describe the results.

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Document Details

Document Type
Technical Report
Publication Date
Jan 21, 1959
Accession Number
AD0235459

Entities

People

  • J. D. Harris

Tags

Communities of Interest

  • Biomedical
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Acoustic Insulation
  • Audiometry
  • Biomedical Research
  • Determinants (Mathematics)
  • Diffraction
  • Distortion
  • Earphones
  • Energy Bands
  • Frequency
  • Frequency Modulation
  • Hearing Loss
  • Human Factors Engineering
  • Intensity
  • Navy
  • Reliability
  • Sound Pressure
  • Spectra

Readers

  • Acoustics.
  • Circadian Sleep-Wake Regulation and Chronobiology
  • Military Training and Readiness Simulation