Accession Number:

AD0678918

Title:

THE USE OF CIRCUMAURAL EARPHONES IN AUDIOMETRY

Descriptive Note:

Interim rept.

Corporate Author:

NAVAL SUBMARINE MEDICAL RESEARCH LAB GROTON CT

Personal Author(s):

Report Date:

1968-07-15

Pagination or Media Count:

21.0

Abstract:

Four circumaural muffs were compared with the phonecushion device now standard for audiometry, the Willson Sound-Barrier, the Maico Auraldome, and 2 versions of the Tracor Otocup. Psychoacoustic loudness balancing by normal subjects was performed, and physical measurements by probe-tube microphone and by flat-plate coupler. Neither physical method was related closely enough at 4 kHz to the fundamental loudness balancing to serve as an independent calibration system for all circumaural muffs.

Subject Categories:

  • Psychology
  • Electrical and Electronic Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE