Pure-Tone Threshold with TDH-49 Earphones

Abstract

Pure-tone thresholds of 24 normal-hearing listeners were determined at 11 audiometric frequencies on two TDH-49 and two TDH-39 earphones. Thresholds were recorded in decibels of sound pressure level, as measured with a National Bureau of Standards type 9-A earphone coupler. Threshold data were used to compute appropriate calibration values for audiometers with TDH-49 earphones, reference Appendix F of ANSI S3.6-1969.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1972
Accession Number
AD0744823

Entities

People

  • Donald C. Gasaway
  • Harrell C. Sutherland Jr.

Organizations

  • United States Air Force School of Aerospace Medicine

Tags

Communities of Interest

  • Biomedical

DTIC Thesaurus Topics

  • Abstracts
  • Acoustic Absorption
  • Acoustic Properties
  • Aerospace Medicine
  • Air Force
  • Air Force Facilities
  • Anechoic Chambers
  • Attenuation
  • Attenuators
  • Audiometry
  • Buildings And Structures
  • Earphones
  • Frequency
  • Frequency Response
  • Government Procurement
  • Governments
  • Sound Pressure

Fields of Study

  • Medicine
  • Physics

Readers

  • Acoustics.
  • Auditory Neuroscience/Auditory Physiology.