A DIGITALIZED SPEECH COMPRESSION SYSTEM
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)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1961
- Accession Number
- AD0266959
Entities
People
- D.c. Coulter
- D.m. Early
- R.e. Irons
Organizations
- Melpar