THE USE OF CIRCUMAURAL EARPHONES IN AUDIOMETRY

reportActive / Technical Report | Accession Number: AD0678918 | Open PDF

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.

Author(s):
Harris, J. D.
Author Organization(s):
NAVAL SUBMARINE MEDICAL RESEARCH LAB GROTON CT
Descriptive Note:
Interim rept.
Supplementary Note:
DOI: 10.21236/AD0678918
Pagination:
0021

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
SMRL-540, NAVMED-MF022.01.04-9004-10
Monitor Series:
MF022.01.04-9004-10, NAVMED
 Subject Terms
Joint Capability Areas:
JCA_1.2.5_Lessons Learned; JCA_6_Net Centric; JCA_6.1.1_Wired Transmission
Communities of Interest:
Biomedical
Descriptor(s):
*EARPHONES, ACOUSTIC INSULATION, AUDIOMETRY, CALIBRATION, MICROPHONES, PSYCHOACOUSTICS, STANDARDS
Field(s)/Group(s):
Psychology, Electrical and Electronic Equipment
Report Date:
1968 Jul 15