Accession Number:

AD0266959

Title:

A DIGITALIZED SPEECH COMPRESSION SYSTEM

Descriptive Note:

Corporate Author:

MELPAR INC FALLS CHURCH VA

Personal Author(s):

Report Date:

1961-09-01

Pagination or Media Count:

1.0

Abstract:

The el ctrical, mechanical, and reliability phases are described of the constr ction of a service te t model Digitalized Speech Compression System. This flyable, fully transi torized system is designed to permit 2-way voice communication through a digital channel at either 1000 or 1200 bits-per-second. Operational data extracte from 2 service test models are given. Methods used to arrive at a suitable mechanical configura ion in order to package the system in 1.3 cu. ft. and to m et MIL-E-5400 are documented. Effort expended to obtain a predicte meantime-between-failure of 711.5 hours are covered. Articulation testing demonstrates that the system exhibits a phonetically balanced word-list articulation of over 75, corresponding to a sentence intelligibility in excess of 94. Other testing, such as environmental and digital jamming, is also discussed. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE