Acoustic and physiologic correlates of the voicing distinction in esophageal speech

This study was designed to compare high- and low-intelligibility productions of /t/ and /d/ in esophageal speakers by using a combination of acoustic, perceptual, and physiologic measurements. Observations from these comparisons were incorporated into clinical strategies for modifying a single subje...

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Bibliographic Details
Published inThe Journal of speech and hearing disorders Vol. 50; no. 4; p. 378
Main Authors Connor, N P, Hamlet, S L, Joyce, J C
Format Journal Article
LanguageEnglish
Published United States 01.11.1985
Subjects
Acoustics
Biofeedback, Psychology
Humans
Male
Middle Aged
Mouth - physiology
Phonation
Pressure
Speech Intelligibility
Speech, Alaryngeal
Speech, Esophageal
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Summary:This study was designed to compare high- and low-intelligibility productions of /t/ and /d/ in esophageal speakers by using a combination of acoustic, perceptual, and physiologic measurements. Observations from these comparisons were incorporated into clinical strategies for modifying a single subject's low-intelligibility utterances. Acoustic comparison indicated that esophageal speakers used voice onset and phonation off-times but not vowel durations to differentiate /t/ and /d/ in high-intelligibility productions. Intraoral pressure measures during /t/ and /d/ production demonstrated excessively high intraoral pressures in both consonants for a low-intelligibility speaker and did not suggest systematic differences in intraoral pressure between /t/ versus /d/. Two weeks of biofeedback treatment with a low-intelligibility speaker were associated with a reduction in intraoral pressures for /t/ and /d/ productions, improved intelligibility, and changes in acoustic characteristics for /t/.
ISSN:0022-4677
DOI:10.1044/jshd.5004.378