The Effect of Electroacoustic Characteristics of Low-Fidelity Circuitry Upon Speech Intelligibility

Abstract

Recorded speech tests were passed through 16 low-fidelity speech communication circuits, rated from good to poor, and listening panels underlined the key words heard. Mean scores among circuits (hearing aids) ranged from 53 to 75 per cent words correct. A total of 32 indices of electroacoustic characteristics was obtained or derived from measures of: transient, harmonic, intermodulation and frequency distortion; gain; and signal/noise ratio. Each index was correlated with speech intelligibility, and multiple correlations were derived for optimal prediction of speech intelligibility from a knowledge of the physical characteristics of any circuit.

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Document Details

Document Type
Technical Report
Publication Date
May 08, 1972
Accession Number
AD0757326

Entities

People

  • J. Donald Harris
  • J. Smaldino

Organizations

  • Naval Submarine Medical Research Laboratory

Tags

DTIC Thesaurus Topics

  • Automated Speech Recognition
  • Bandwidth
  • Biomedical Research
  • Distortion
  • Frequency
  • Frequency Bands
  • Frequency Response
  • Hearing Loss
  • Measurement
  • Microphones
  • Navy
  • Perception
  • Regression Analysis
  • Signal Generators
  • Test And Evaluation
  • United States
  • White Noise

Readers

  • Acoustics.
  • Electronics Engineering
  • Speech Processing/Speech Recognition.