The Influence of Stress, Position, and Utterance Length on the Pressure Characteristics of English /p/ and /b/ This study examines pressure characteristics of /p/ and /b/ as a function of position with regard to stress and position within the utterance. Eight female talkers produced utterances which varied in length from one to five disyllables ([páp] or [báb]). Results demonstrate the importance of utterance position for the magnitude ... Research Article
Research Article  |   March 01, 1983
The Influence of Stress, Position, and Utterance Length on the Pressure Characteristics of English /p/ and /b/
 
Author Affiliations & Notes
  • James Emil Flege
    University of Florida, Gainsville
Article Information
Research Articles
Research Article   |   March 01, 1983
The Influence of Stress, Position, and Utterance Length on the Pressure Characteristics of English /p/ and /b/
Journal of Speech, Language, and Hearing Research, March 1983, Vol. 26, 111-118. doi:10.1044/jshr.2601.111
History: Received June 8, 1981 , Accepted February 12, 1982
 
Journal of Speech, Language, and Hearing Research, March 1983, Vol. 26, 111-118. doi:10.1044/jshr.2601.111
History: Received June 8, 1981; Accepted February 12, 1982

This study examines pressure characteristics of /p/ and /b/ as a function of position with regard to stress and position within the utterance. Eight female talkers produced utterances which varied in length from one to five disyllables ([páp] or [báb]). Results demonstrate the importance of utterance position for the magnitude of supraglottal pressure in stops. Except in voiceless stops found in the first words of utterances, pressure was greater in the prestressed than in the poststressed position. The pressure difference distinguishing /p/ and /b/ was reduced considerably when these stops occurred in absolute utterance-initial position. A post hoc analysis revealed that pressure increased much more slowly in initial than in noninitial stops and that /p/ and /b/ were not distinguished by the rate at which supraglottal pressure increased when these stops occurred in utterance-initial position. Finally, it was found that the pressure of stops in the first words of utterances increased as a function of utterance length, suggesting preplanning for sentence production at the respiratory level.

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