Problems of Voice Communication in the Navy. Regulation of Vocal Intensity at Low Fundamental Frequencies

Abstract

Extremely low frequency phonation (often called glottal or vocal fry) provides a research tool for understanding certain vocal distortions which may be present in conditions in which the Navy swimmer or diver operates. This study investigated the regulation of intensity at very low frequency phonation. Subjects produced various frequency intensity combinations of vocal fry; the samples were recorded and analyzed. The results indicate that at low fundamental frequencies intensity is relatively low compared to modal phonation (conversational speech). Furthermore, there appeared to be an interdependence between changes in frequency and intensity. The results provide preliminary data for investigations of phonation as it occurs in environments which may effect vocal output, that is, in increased ambient pressure, the normal environment of Navy swimmers and divers.

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Document Details

Document Type
Technical Report
Publication Date
Aug 24, 1970
Accession Number
AD0718857

Entities

People

  • Thomas Murry

Organizations

  • Naval Submarine Medical Research Laboratory

Tags

Communities of Interest

  • Biomedical

DTIC Thesaurus Topics

  • Air Flow
  • Air Pressure
  • Biomedical Research
  • Breathing Apparatus
  • Flow
  • Flow Rate
  • Frequency
  • High Pressure
  • Instructions
  • Intensity
  • Laryngeal Diseases
  • Navy
  • Regulations
  • Respiratory Physiological Processes
  • Sound Pressure
  • Submarines
  • Voice Communications

Readers

  • Acoustical Oceanography.
  • Acoustics.
  • Speech Processing/Speech Recognition.