LOUDNESS OF SPEAKING: THE EFFECT OF THE INTENSITY OF SIDE-TONE UPON THE INTENSITY OF THE SPEAKER

Abstract

Sixteen subjects read intelligibility tests while waring headphones. Each subject read four tests, one at each of four levels of intensity of the side-tone in his headphones. A constant level of background noise was in the headphones, only the amplification of the speaker-induced signal varying. A panel of listeners heard the recordings, in a noise-filled room (110-114 db) in the manner of an intelligibility test. Also through the tracings of a graphic level recorder the intensity of the speaker's readings of the test items was measured. Analysis showed that speaker increased in vocal intensity with diminished side-tones, and that intelligibility scores likewise increased when the speaker heard less intense side-tones.

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Document Details

Document Type
Technical Report
Publication Date
Jun 12, 1948
Accession Number
AD0642189

Entities

People

  • Charles Lightfoot
  • Scott N. Morrill

Organizations

  • Kenyon College

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aircrafts
  • Airplanes
  • Amplification
  • Amplifiers
  • Analysis Of Variance
  • Aviation Medicine
  • Background Noise
  • Basic Training
  • Earphones
  • Hearing
  • Intelligibility
  • Intensity
  • Microphones
  • Noise
  • Recording Systems
  • Sensation
  • Training Aircraft

Readers

  • Computer Science/Computer Engineering/Data Science/Digital Signal Processing.
  • Speech Processing/Speech Recognition.