Accession Number:

AD0745794

Title:

Improvements in Underwater Voice Communication.

Descriptive Note:

Final rept. 1 Jan 68-15 Sep 71,

Corporate Author:

CONNECTICUT UNIV STORRS DEPT OF SPEECH

Personal Author(s):

• Cooker,Harry S.

Report Date:

1972-04-01

Pagination or Media Count:

12.0

Abstract:

Various methods and techniques were investigated for improving voice communication between diverswimmers, within closed environments, and under adverse conditions resulting from water immersion. Improvements were sought in the reduction of channel noise, increased signal reception, reduced gaspressure distortion, expansion of the useful auditory channel, and clearer diverswimmer articulation. In order to accomplish these tasks, it was necessary to develop methodologies for better assessment of transducers and transmission channels. Furthermore, studies were conducted to determine the effect of word sequencing on message reception and the effect of timefrequency distortion on the transmission of prosodic feature information. Author

Descriptors:

• *VOICE COMMUNICATIONS
• *UNDERWATER COMMUNICATIONS
• SPEECH
• DIVING
• AUDITORY PERCEPTION
• PRESSURE
• GASES
• DISTRIBUTION

Subject Categories:

• Acoustics
• Voice Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE