Survey of Narrow Band Vocoder Technology.

Abstract

The USAF has a need to identify a vocoder to insert into a Low Probability of Intercept (LPI) communications system. It should be small, lightweight, low power, capable of operating in many types of aircraft, and capable of processing intelligible, natural sounding speech at 400 to 600 bits/seconds. Two separate units are needed: one to be used in a near-term brassboard test system and one to be used in a far-term production system. Weighted characteristic values are combined through a mapping and summing procedure to form a Figure of Merit for each system. Using these characteristic values, primary vocoder candidates have been identified and are discussed in this paper. Additional keywords: Waveforms, Theses, State of the art, Brassboard models, Multimode, LASARS(LPI Antijam Secure Airborne Radio System). (Author)

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1984
Accession Number
ADA151919

Entities

People

  • W. B. Mcminn Jr

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Advanced Electronics
  • C4I
  • Energy and Power Technologies
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Air Force
  • Aircrafts
  • Communication Systems
  • Communications Techniques
  • Computer Programming
  • Digital Communications
  • Electrical Engineering
  • Human Factors Engineering
  • Larynx
  • Radio Communications
  • Radio Equipment
  • Signal Processing
  • Speech Compression
  • Standards
  • Test And Evaluation
  • United States
  • Waveforms

Readers

  • Radar Systems Engineering.
  • Software Engineering
  • Speech Processing/Speech Recognition.