Analysis of Discrete Word Recognition

Abstract

The Federal Aviation Administration Technical Center's Utterance Recognition Device (URD) was tested to determine its recognition rate and other pertinent operating characteristics for a vocabulary of 25 words. Audio input for the test was by means of standard voice grade telephone lines. No specific speaker training of the URD was performed prior to the test. Analysis of the resulting data base indicated that the 219 test subjects achieved an overall recognition rate of 85 percent. Computer simulation of subdividing the possible word choices, according to function-oriented subgroups, resulted in a 5 percent increase in the overall recognition rate. The results of this test will be used as reference for similar, future tests, using an expanded vocabulary to explore the possibility of using a device, such as the URD, as the input medium for direct user filing of flight plans over standard voice grade telephone lines.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1981
Accession Number
ADA105567

Entities

People

  • Dennis A. Steelman

Organizations

  • Federal Aviation Administration

Tags

Communities of Interest

  • Human Systems

DTIC Thesaurus Topics

  • Algorithms
  • Artificial Intelligence
  • Automated Speech Recognition
  • Communication Systems
  • Computers
  • Data Analysis
  • Databases
  • Diagrams
  • Dialogue Systems
  • Engineering
  • Errors
  • Host Computers
  • Plastic Explosives
  • Recognition
  • Reliability
  • Telephone Lines
  • Word Recognition

Readers

  • Computational Linguistics
  • Computer Science/Computer Engineering/Data Science/Digital Signal Processing.
  • Personnel Management and Statistics in the Military and Department of Defense