Activities as an ONT Postdoctoral Fellow.

Abstract

The comprehension of narrowband digital speech with bit errors was tested using a sentence verification task. The difficulty of the verification task was varied by using predicates that were either strongly or weakly related to the subjects (e.g., A toad has warts./A toad has eyes.). The test conditions included unprocessed speech and speech processed using a 2400 bit/s linear predictive coding (LPC) voice processing algorithm with random bit error rates of 0%, 2% and 5%. In general, response accuracy decreased and reaction time increased with LPC processing and with increasing bit error rates. Weakly related true sentences and strongly related false sentences were more difficult than their counterparts. Interactions between sentence type and speech processing conditions are discussed. Keywords: Computer applications, Speech analysis, Speech scrambling, Speech recognition.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1987
Accession Number
ADA185540

Entities

People

  • Howard J. Kallman

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Human Systems

DTIC Thesaurus Topics

  • Alphabets
  • Comprehension
  • Contrast
  • Errors
  • Intelligibility
  • Language
  • Military Research
  • Narrowband
  • Perception
  • Psychology
  • Reaction Time
  • Recognition
  • Signal Processing
  • Speech Quality
  • Standards
  • Voice Communications
  • Word Recognition

Readers

  • Mathematical Modeling and Probability Theory.
  • Speech Processing/Speech Recognition.

Technology Areas

  • AI & ML
  • AI & ML - Bayesian Inference
  • AI & ML - Information Retrieval