Prosodic factors in speechreading: Visual disambiguation of syntactic ambiguity.
Item
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Title
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Prosodic factors in speechreading: Visual disambiguation of syntactic ambiguity.
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Identifier
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AAI9969718
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identifier
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9969718
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Creator
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Porrazzo, Josephine Geraldine.
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Contributor
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Adviser: Katherine Safford Harris
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Date
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2000
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Language
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English
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Publisher
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City University of New York.
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Subject
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Psychology, Psychometrics | Psychology, Experimental
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Abstract
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There is some evidence that observers are able to extract and make use of prosodic cues in speechreading. This study focuses on visual disambiguation of suprasegmental information. The purpose of the study was to investigate the role of the jaw in conveying suprasegmental information to the speechreader. Speech materials used consist of six productions of seven pairs of syntactically ambiguous sentences and their reiterant imitations, as spoken by two talkers, a male and a female. There are three parts to this experiment; a perceptual study, an acoustic study, and a study of jaw movement. For the perceptual study, subjects were asked to discriminate between the two interpretations of each ambiguous sentence pair presented in four conditions; audio-natural, audio-reiterant, visual-natural, and visual-reiterant. The acoustic study and movement study focus on the reiterant utterances. The acoustic study reports on measurements of duration of the vowel portion for syllables critical to the disambiguation of the sentence. The movement study examines differences in jaw amplitude, and opening and closing duration for the key syllables as a function of sentence type. The main issue for this dissertation is whether the syntactic contrast in question is associated with systematic differences in the pattern of jaw movement which are perceptually identifiable.
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Type
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dissertation
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Source
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PQT Legacy CUNY.xlsx
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degree
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Ph.D.
