Testing and Evaluation of Low Data Rate Voice CODEC Equipment, Phase 2

Abstract

The FAA is currently evaluating low rate voice digitizing coder/ decoder (CODEC's) for use with the Aeronautical Mobile Satellite Service (AMSS). Phase II of this evaluation consisted of air traffic control (ATC) personnel participating in an objective intelligibility test of several CODEC's under operational conditions. The results of the testing show that the intelligibility of the low rate 4.8 kilobits per second (kbps) CoDEC's is essentially equivalent to the intelligibility of the 9.6 kbps CODEC. The results also show that the 4.8 kbps CODEC's can operate with high intelligibility under conditions of high bit error rates and operational background noise. Keywords: Air traffic controllers; Digital voice communications; Voice coding.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1989
Accession Number
ADA214093

Entities

People

  • Joseph Child
  • Marcus Grable
  • Thomas Dehel

Organizations

  • Federal Aviation Administration

Tags

Communities of Interest

  • Advanced Electronics
  • Human Systems
  • Materials and Manufacturing Processes
  • Space

DTIC Thesaurus Topics

  • Acceptability
  • Air Traffic
  • Artificial Satellites
  • Background Noise
  • Civil Aviation
  • Data Rate
  • Engineering
  • Frequency
  • Intelligibility
  • New York
  • Radio Frequency
  • Standards
  • Test Facilities
  • Transport Aircraft
  • Transportation
  • United States
  • Voice Communications

Readers

  • Aviation Safety and Air Traffic Management
  • Computer Science/Computer Engineering/Data Science/Digital Signal Processing.
  • Speech Processing/Speech Recognition.

Technology Areas

  • Space