Comparison of the Effects of Broad-Band Noise on Speech Intelligibility and Voice Quality Ratings

Abstract

Results of a study of effects of broad-band noise on speech intelligibility and voice quality are presented, with a comparison of three methods for evaluating speech signals: the Diagnostic Rhyme Test (DRT) for speech intelligibility, the Diagnostic Acceptability Measure (DAM) test for voice quality and acceptability, and the Mean Opinion Score (MOS), also for evaluating speech quality and acceptability. Speech samples were combined with broad-band noise, with accurate calibration of speech-to-noise energy ratios by using a new measurements algorithm developed under RADC sponsorship. Four scrambling (randomizations) of the Diagnostic Rhyme Test were prepared with each of three male speakers, for assessing speech intelligibility. Connected speech samples from the three speakers were prepared for assessing voice quality and acceptability. The processed speech samples were digitally recorded for subsequent presentation to listener crews.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1986
Accession Number
ADA176900

Entities

People

  • Caldwell P. Smith

Organizations

  • Rome Laboratory

Tags

Communities of Interest

  • Cyber
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Acceptability
  • Accuracy
  • Agreements
  • Algorithms
  • Background Noise
  • Calibration
  • Classification
  • Department Of Defense
  • Environment
  • Human Factors Engineering
  • Intelligibility
  • Measurement
  • Ratings
  • Security
  • Standards
  • Test And Evaluation
  • Voice Communications

Readers

  • Regression Analysis.
  • Speech Processing/Speech Recognition.