Development of Auditory Localization Test Procedure
Abstract
The research reported was to develop a system for rapid assessment of human auditory localization ability as affected by various hearing and ballistic protection devices. This study is a partial replication of an earlier study in which stimuli were presented using multiple transducers. The purposes of this study are to demonstrate the abilities of a second generation assessment system using a single transducer in a larger controlled environment and to provide initial data to use for comparison in future experiments. This second generation system eliminates extraneous cues to localization provided by differing frequency spectrum signatures of multiple transducers, and provides greatly increased angular resolution for stimulus presentation. The same hearing protective devices tested in the multiple transducer study are considered here. The DH-178 helmet is a prototype ballistic helmet combined with circumaural hearing protection and a 'talk-through' amplification of high level acoustic input. The DH-178 was two independent amplification circuits, one for each ear. It therefore provides a dichotic signal to the wearer. The DH-140 is also a ballistic helmet similar to the DH-178. The most important difference is that the DH-14- uses single amplification circuit distributed to the two ears. It provides a diotic signal to the wearer. Keywords: Ballistic helmets; Auditory signal processing; Hearing protection.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1984
- Accession Number
- ADA211988
Entities
People
- Lloyd F. Elfner
- William R. Howse
Organizations
- Florida State University