Specific Phoneme Intelligibility of Words Subjected to Time-Smearing Distortion

Abstract

One distortion to speech transmitted through the ocean is known as 'time-smearing'. A detailed analysis was made of the intelligibility of spoken consonants in time-smeared speech. Recorded tests of speech materials were treated by computer to simulate varied degrees of time-smearing. In addition, the speech was further degraded by either 4000 or 1200 Hertz low-pass filtering. The responses of 320 sailors who heard this material were analyzed for phoneme intelligibility. Results show the reduction in intelligibility produced by changing the filter condition was much greater than reductions caused by altering smear duration. As the duration of the smearing increased, intelligibility dropped significantly.

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Document Details

Document Type
Technical Report
Publication Date
Jan 25, 1971
Accession Number
AD0734123

Entities

People

  • Harry S. Cooker
  • Joseph S. Russotti
  • Russell L. Sergeant

Organizations

  • Naval Submarine Medical Research Laboratory

Tags

Communities of Interest

  • Biomedical

DTIC Thesaurus Topics

  • Abstracts
  • Biomedical Research
  • Classification
  • Communication Systems
  • Computers
  • Digital Computers
  • Distortion
  • Filters
  • Filtration
  • Human Factors Engineering
  • Intelligibility
  • Low Pass Filters
  • Materials
  • Navy
  • Recording Systems
  • Submarines
  • Voice Communications

Fields of Study

  • Engineering

Readers

  • Speech Processing/Speech Recognition.
  • Structural Dynamics.