Accession Number:

AD0672309

Title:

LIMITATIONS ON THE USE OF CIRCUMAURAL EARPHONES

Descriptive Note:

Memo rept.

Corporate Author:

NAVAL SUBMARINE MEDICAL RESEARCH LAB GROTON CT

Personal Author(s):

• Benson, R. W.
• Charan, K. K.
• Day, J. W.
• Harris, J. D.
• Niemoeller, A. F.
• W. Rudmose,
• Shaw, E. G.
• Weissler, P.

Report Date:

1968-05-29

Pagination or Media Count:

6.0

Abstract:

A literature survey and interpretation by a panel of experts of the NAS-NRC Committee on Hearing, Bioacoustics and Biomechanics shows that the now commonly-used large earmuffs, designed to protect hearing, cannot indiscriminately replace the small earphone cushion currently the standard for audiometry. If they are so used, hearing losses at 3000-8000 cyclessecond should be rechecked with the standard cushion.

Descriptors:

• *AUDIOMETRY
• CALIBRATION
• EARPHONES
• HEARING
• NOISE
• PROTECTIVE COVERINGS

Subject Categories:

• Medicine and Medical Research
• Medical Facilities, Equipment and Supplies
• Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE