Telephone System for Diver Communication.
Abstract
The report describes a telephone system for use by divers employing demand breathing apparatus. Sounds picked up by each diver's microphone are processed by selective filtering, amplification, rectification and comparison to a reference voltage level to provide logic signals representative of presence or absence of inhalation noise that could mask voice transmissions of other divers or of a tender. The microphone output to listening stations is switched through an attenuation path by the logic signal representing inhalation noise and through a by-pass or full strength path by the other logic signal. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 16, 1977
- Accession Number
- ADD005047
Entities
People
- Christian P. F. Werle
- Eric J. Tuovila
Organizations
- United States Department of the Navy