Dual Task Performance with LPC (Linear Predictive Coding) Degraded Speech in a Sentence Verification Task

Abstract

The results of a preliminary study on the effects of reduced speech intelligibility on dual task performance are reported. The speech task was a sentence verification task, and the speech degradation was accomplished using a narrowband digital voice transmission system operating with and without random bit errors. The second task was a visual picture sorting task. There was a dual task decrement on the sorting task, and in addition, there was an further decrease in sorts per minute as the speech was increasingly degraded. Reaction time for the speech task increased with the concurrent sorting task, but the dual task condition did not affect speech task error rates. Keywords: Voice communications, Linear predictive coding, Bit errors, Intelligibility, Sentence verification, Reaction time.

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Document Details

Document Type
Technical Report
Publication Date
Oct 20, 1989
Accession Number
ADA214298

Entities

People

  • Astrid Schmidt-nielsen
  • C. Meijer
  • H. J. Kallman

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Classification
  • Communication Systems
  • Comprehension
  • Data Analysis
  • Degradation
  • Frequency
  • Human Factors Engineering
  • Information Processing
  • Intelligibility
  • Military Research
  • Narrowband
  • Psychology
  • Reaction Time
  • Security
  • Task Performance And Analysis
  • Verification
  • Voice Communications

Readers

  • Brain and Cognitive Science; Experimental Psychology; Cognitive Neuroscience
  • Speech Processing/Speech Recognition.