Abstract
Laryngeal functioning during the production of whispered speech is not well understood. The efficacy of whispering as a means of voice rest is a common clinical concern that is unresolved. This investigation examined vocal-fold configuration, glottal size, and airway constriction by supraglottal structures during whispering. Ten normally speaking adults produced consonant-vowel syllables with three different vowels while whispering in low-effort and high-effort manners. The larynx was visualized through fiberoptic endonasolaryngoscopy, and the views were recorded on videotape. Analysis and descriptions of the data revealed that low-effort and high-effort whispering were differentiated to a small extent by vocal-fold adjustments and to a somewhat larger degree by supraglottal constriction. However, for each dependent variable, individual subject differences tended to be considerably larger than any systematic effects due to whisper type or vowel.
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