Measurement of the Effects of Helmet Form on Sound Source Detection and Localization Using a Portable Four-Loudspeaker Test Array.

摘要

The objective of this research was to evaluate the effectiveness of a portable, four-loudspeaker array for assessments of helmet effects on wearer's detection and localization of sound sources. Military and civilian helmets affect the wearer s ability to detect and localize sound sources. There is industry need to evaluate auditory effects in helmet development and modification processes, but ongoing, well-controlled laboratory studies are prohibitively time-consuming and costly. A portable four-loudspeaker test array was used to compare the auditory effects of two prototype and two fielded helmets to a bare-head condition. Detection thresholds were measured for one- third-octave noise bands (125 8000 Hz). Localization performance was assessed for low-pass.