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Respiratory and laryngeal function during whispering.

E T Stathopoulos1, J D Hoit, T J Hixon

  • 1University of Arizona Institute for Neurogenic Communication Disorders, Tucson.

Journal of Speech and Hearing Research
|August 1, 1991
PubMed
Summary
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Whispering uses lower lung volumes and fewer syllables per breath group than speaking. This may be to manage airflow and achieve specific tracheal pressure targets during vocalization.

Area of Science:

  • Physiology
  • Speech Science
  • Respiratory Mechanics

Background:

  • Understanding the physiological differences between whispering and speaking is crucial for speech pathology and respiratory research.
  • Previous studies established methods for observing chest wall kinematics and pressure-flow dynamics.

Purpose of the Study:

  • To investigate and compare respiratory and laryngeal function during whispering versus speaking in healthy adults.
  • To identify kinematic and pressure-flow differences that characterize whispering.

Main Methods:

  • Utilized established procedures for chest wall kinematic observations (Hoit & Hixon, 1987).
  • Employed pressure-flow observation techniques (Smitheran & Hixon, 1981).
  • Studied 10 healthy young adults during whispering and speaking tasks.

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Main Results:

  • Whispering demonstrated lower lung volumes and tracheal pressures compared to speaking.
  • Higher translaryngeal flows and lower laryngeal airway resistances were observed during whispering.
  • Fewer syllables per breath group were produced during whispering.

Conclusions:

  • Lower lung volumes in whispering may facilitate achieving specific tracheal pressure targets.
  • Reduced syllables per breath group in whispering likely compensate for higher air expenditure.
  • Normal whispering patterns differ significantly from those seen in certain speech and voice disorders.