The Effect of Quiet on Hearing

Abstract

The hearing of subjects participating in psychoacoustic experiments may be elevated (temporary hearing loss) due to environmental noises encountered prior to their arrival at the test site. Hearing threshold levels of trained subjects were measured immediately upon arrival at the Laboratory and again following individual 1/2, 1, and 2 hour periods in the quiet of an anechoic chamber. Comparisons of prequiet and postquiet thresholds revealed a slight trend of 1 or 2 decibles toward improved hearing after quiet. However, the changes in hearing thresholds were not statistically significant and were judged to be too small to be of practical significance.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1975
Accession Number
ADA006395

Entities

People

  • Charles W. Nixon
  • Mark R. Stephenson

Organizations

  • Air Force Research Laboratory

Tags

DTIC Thesaurus Topics

  • Acoustic Absorption
  • Acoustics
  • Air Force
  • Air Force Facilities
  • Air Force Personnel
  • Anechoic Chambers
  • Audiometry
  • Background Noise
  • Biomedical Research
  • Hearing Loss
  • Instrumentation
  • Measurement
  • Motor Vehicles
  • Noise
  • Signal Generators
  • Statistical Analysis
  • Test Facilities

Fields of Study

  • Psychology

Readers

  • Mathematics or Statistics
  • Speech Processing/Speech Recognition.