INTELLIGIBILITY OF DIVER COMMUNICATION SYSTEMS.
Abstract
The purposes of the project were (1) to develop a method for evaluating the intelligibility of underwater communication systems and (2) to make comparative evaluations of the systems currently available (both military and civilian). Speech materials consisted of Campbell PB25 lists read by 4-12 diver/talkers positioned within a specially constructed Diver Communication Research System (DICORS); these word lists were recorded on the surface and presented to listeners for intelligibility scoring. Underwater communicators of three types were evaluated: (a) amplitude modulated; (b) acoustical; and (c) hard line. The most significant finding was that all of the evaluated communicators transmitted speech with somewhat low intelligibility; secondary findings indicated that type of muzzle and regulator employed with a communication system contributes substantially to the level of intelligibility. Of the 11 configurations compared, no single approach to underwater communication (modulated, hard line, acoustic) completely dominated the results. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 15, 1968
- Accession Number
- AD0682494
Entities
People
- Carl L. Thompson
- Harry Hollien
- Kent W Hunter
- Robert F. Coleman
Organizations
- University of Florida