NCJ Number
42755
Journal
Police Research Bulletin Issue: 29 Dated: (SUMMER 1977) Pages: 19-25
Date Published
1977
Length
7 pages
Annotation
IN ADDITION TO PRESENTING INFORMATION THAT IS PRESENTLY AVAILABLE ON UNDERWATER COMMUNICATIONS METHODS USED BY POLICE DIVERS, THE AUTHOR OUTLINES USER REQUIREMENTS FOR EQUIPMENT TO BE DEVELOPED IN THE FUTURE.
Abstract
BY POLLING POLICE DIVERS AS TO THEIR PREFERENCES FOR DIVING COMMUNICATIONS DEVICES, THE AUTHOR DETERMINED THAT THERE IS NO SINGLE SYSTEM PRESENTLY AVAILABLE TO MEET THEIR REQUIREMENTS. HE FURTHER CONCLUDED THAT THE SINGLE MOST IMPORTANT IMPROVEMENT THAT COULD BE MADE IN UNDERWATER COMMUNICATIONS IS A COMBINED MASK/MICROPHONE/ EARPHONE DEVELOPMENT, TAKING INTO ACCOUNT THE FREQUENCY CHARACTERISTICS OF MASK CAVITY AND THE DESIGN OF A MICROPHONE TO MATCH THESE CHARACTERISTICS. THIS WOULD DEVIATE FROM THE PRECEDENT OF MASK AND MICROPHONE MANUFACTURERS WORKING INDEPENDENTLY OF ONE ANOTHER. (AUTHOR ABSTRACT MODIFIED)...KAP