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. Author manuscript; available in PMC: 2007 Mar 21.
Published in final edited form as: J Acoust Soc Am. 2001 Jan;109(1):216–231. doi: 10.1121/1.1326083

FIG. 2.

FIG. 2

Realistic view of a subject wearing the first helmet and earmuffs. The helmet is shown cut away to illustrate how it fit loosely over the head of a subject wearing earmuffs; in actuality, it enclosed the subject's entire head.