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Abstract:
Previous research has shown that listeners wearing the Personnel Armor System for Ground Troops (PASGT) helmet performed worse than those wearing the Advanced Combat Helmet on sound localization tasks. The PASGT has greater coverage over the ears. However, these helmets also differ in their suspension systems and profiles. Three versions of a single helmet design, differing only in the ear coverage, were compared in this study. As ear coverage increased, localization performance decreased. Most of the change was due to increases in large errors (25-deg). In addition, these effects were tested in both ideal laboratory acoustics and in a moderately reverberant environment. Moderate reverberation intensified the effects of ear coverage -- improving localization performance without a helmet and impairing it the most in the greatest ear coverage condition.
| Limitations: |
 APPROVED FOR PUBLIC RELEASE |
| Description: |
Final rept. |
| Pages: |
20 |
| Report Date: |
Jul 2009 |
| Report Number: |
A926605 |
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