Effects of Auditory Masking on Lip Movements During Speech This study describes the effects of unpredictably presented masking noise on selected parameters of lip movement during speech. Four normal subjects produced a simple speech utterance while vertical displacements of the upper and lower lips were transduced and recorded. During selected productions a masking noise was presented dichotically at one ... Research Article
Research Article  |   December 01, 1977
Effects of Auditory Masking on Lip Movements During Speech
 
Author Affiliations & Notes
  • Michael McClean
    University of Washington, Seattle
Article Information
Research Articles
Research Article   |   December 01, 1977
Effects of Auditory Masking on Lip Movements During Speech
Journal of Speech, Language, and Hearing Research, December 1977, Vol. 20, 731-741. doi:10.1044/jshr.2004.731
History: Received June 4, 1976 , Accepted June 15, 1977
 
Journal of Speech, Language, and Hearing Research, December 1977, Vol. 20, 731-741. doi:10.1044/jshr.2004.731
History: Received June 4, 1976; Accepted June 15, 1977

This study describes the effects of unpredictably presented masking noise on selected parameters of lip movement during speech. Four normal subjects produced a simple speech utterance while vertical displacements of the upper and lower lips were transduced and recorded. During selected productions a masking noise was presented dichotically at one of two distinct phases of lip movement. Analysis of the resulting data revealed the following for all subjects: (1) significant changes in the duration, displacement, and velocity of lip movement caused by masking and (2) significant reductions in the velocity of lip movement occurring approximately 50 msec after the onset of the masker. Possible explanations of these and certain speaker-dependent effects are discussed.

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