A TEST OF THE 20-BAND AND OCTAVE-BAND METHODS OF COMPUTING THE ARTICULATION INDEX

Abstract

The accuracy with which the Articulation Index is calculated by both the octave band and 20-band methods predict the intelligibility of speech presented to listeners in the presence of a variety of types of broad band noises was calculated. The results indicate that, for the noises tested, the octave band method for the calculation of articulation index can be used in place of the more detailed 20-band method without any APPRECIABLE LOSS IN THE ACCURACY WITH WHICH SPEECH INTELLIGIBILITY TEST SCORES ARE PREDICTED.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1961
Accession Number
AD0271606

Entities

People

  • Carl Williams
  • Gail Flanagan
  • K. D. Kryter

Organizations

  • BBN Technologies

Tags

DTIC Thesaurus Topics

  • Accuracy
  • Communication Systems
  • Continuous Spectra
  • Distortion
  • Earphones
  • Frequency
  • Frequency Bands
  • Government Procurement
  • Governments
  • Human Factors Engineering
  • Intelligibility
  • Intensity
  • Measurement
  • Sound Pressure
  • Spectra
  • Speech
  • Steady State

Readers

  • Acoustics.
  • Speech Processing/Speech Recognition.