Evaluation of a Communication Beanie for Use with the MK 12 SSDS.

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Evaluation of a Communication Beanie for Use with the MK 12 SSDS.

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Title: Evaluation of a Communication Beanie for Use with the MK 12 SSDS.
Author: Knafelc, ME; Curley, MD
Abstract: The effectiveness of a beanie to improve communication and provide helmet noise attenuation was assessed. Eight male divers dove repeatedly on air to 6, 130, and 190 FSW wearing the MD 12 SSDS helmet in the normal configuration and with a communication beanie. A modified rhyme test performed at depth showed the beanie significantly improved speech intelligibility. The divers' hearing threshold levels were measured pre and immediately post dive. The temporary threshold shifts as a result of the noise exposures did not vary significantly as a function of helmet configuration or depth. However, the auditory data showed that auditory threshold shifts recovered during resting decompression. These findings indicate that present U. S. Navy diving procedures for diving the MK 12 SSDS in air do not lead to permanent hearing damage. Furthermore, the communication beanie significantly improved speech intelligibility.
Description: Citation Status: Active; Citation Classification: Unclassified; Title Classification: Unclassified; Report Classification: Unclassified; Identifier Classification: Unclassified; Abstract Classification: Unclassified; Distribution Limitation(s): 01 - APPROVED FOR PUBLIC RELEASE; Information provided by the Department of Defense and the Defense Technical Information Center (http://www.dtic.mil/) is considered public information and may be distributed or copied unless otherwise specified. Use of appropriate byline/photo/image credits is requested.
URI: http://archive.rubicon-foundation.org/3532
Date: 1987

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