No description available.

Three lipreading tests were given to thirty normal hearing college students in groups of five during three successive weeks: a 50word list of CID W-22 words presented via videotape; a second randomization of the same words presented via a one-way glass window; and Form A of the Utley Sentence Test of Lipreading presented via videotape. Each monosyllabic word test of lipreading was scored so that stimulus only was accepted and again so that homophenous substitutions were accepted. The Utley Sentence Test was scored counting the number of words correct.Results suggested monosyllabic words may be reliably used as a test of lipreading. It appeared that homophenous scoring did not produce more reliable results than regular scoring. There were indications that further study is needed to determine if the words should be scored for homophenous substitutions and to determine reliability when presentation mode is changed.

No description available.

No description available.

Thesis (Ph. D.)--University of Wisconsin--Madison, 1972. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

Thesis (Ph. D.)--University of Washington, 2005. / Vita. Includes bibliographical references (leaves 97-106).

This study investigates the relationship of articulatory variation to the visual perception of phonemes. Normal hearing and hearing-impaired subjects who had demonstrated good lipreading skills on a pilot test were selected to lipread videotaped tests under visual only conditions. Eighty-one V₁CV₂ utterances where V could be /I,æ,u/ and C could be /p,t,k, tϚ, f, Θ, s,Ϛ, w/ were spoken by a speaker who had been selected in a pilot study as being easy to lipread. The 81 stimuli were used to construct three test tapes, one where the speaker spoke slowly, one where she spoke faster, and one in which the fast tape was reversed. Coarticulatory influences were expected to be present in these stimuli. Lipreading scores and measurements of the articulations were compared in an effort to explain some of the variability in the visual perception of phonemes which was suggested by existing literature. Lipreading performance was nearly perfect for /p,f,w, Θ,u/ on all tapes in all disyllables. Lipreading performance on /t,k,tϚ,Ϛ,s,i,æ/ varied depending on phonological context, especially on the fast test tape. Variation in the identification of the less visually dominant phonemes could be directly related to coarticulatory effects revealed in the measurement of articulatory parameters (vertical and horizontal lip opening) of the visual signal. Improvement in lipreading ability throughout the task was evidenced by normal hearing subjects. The features labial, rounded, and alveolar or palatal place of articulation transmitted more information to lipreaders than did the feature continuant. It was concluded that variability in articulatory parameters resulting from coarticulatory effects in faster speech increases lipreading difficulty, especially initially. Lipreaders are sensitive to subphonemic and subvisemic variations. / Medicine, Faculty of / Audiology and Speech Sciences, School of / Graduate

No description available.

No description available.

Thesis (Ph. D.)--University of California, San Diego, 1998. / Vita. Includes bibliographical references (leaves 108-117).