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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. 8.

FIG. 8

Mean objective and subjective attenuations for the helmet/earmuff/earplug combination ±1 s.d. (objective: solid curve and shading, five ears in five subjects; subjective: symbols and error bars, five subjects). Key to symbols and vertical lines as in Fig. 5. Mean attenuations for the helmet/earmuff combination from Fig. 7(A) are shown for comparison [objective: dashed curve; subjective: solid inverted triangles (gradient noise) and solid diamonds (tone bursts)]. Solid symbols are offset slightly to the left for clarity.