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Accession Number:
AD0745121
Title:
The Effect of Helmet Form on Hearing: Free-Field Thresholds
Corporate Author:
HUMAN ENGINEERING LAB ABERDEEN PROVING GROUND MD
Report Date:
1972-04-01
Abstract:
Audiometric threholds were determined for 12 subjects under three head conditions bareheaded, while wearing an M1 helmet, and wearing an experimental helmet. The thresholds were measured for seven tones 125, 250, 500, 1000, 2000, 4000 and 8000 Hz, at each of five angular orientations. Statistically noteworthy differences were studied for main effects and interactions. These appear to fall within the range of variation most people ordinarily experience on a day-to-day basis.
Descriptive Note:
Technical note
Pages:
0020
Distribution Statement:
Approved for public release; distribution is unlimited.
File Size:
0.74MB
