Perceptual Dimensions Underlying Vowel Lipreading Performance This study was concerned with the extraction, description, and verification of visual perceptual features underlying vowel lipreading performance. Ten viewers with normal hearing rated the visual similarity of pairs of 15 vowels and diphthongs presented in an /h_g/ context by four speakers. Multidimensional scaling techniques were used to extract potential ... Research Article
Research Article  |   December 01, 1976
Perceptual Dimensions Underlying Vowel Lipreading Performance
 
Author Affiliations & Notes
  • Pamela L. Jackson
    Northern Illinois University, DeKalb
  • Allen A. Montgomery
    Walter Reed Army Medical Center, Washington, D.C.
  • Carl A. Binnie
    Purdue University, West Lafayette, Indiana
Article Information
Research Articles
Research Article   |   December 01, 1976
Perceptual Dimensions Underlying Vowel Lipreading Performance
Journal of Speech, Language, and Hearing Research, December 1976, Vol. 19, 796-812. doi:10.1044/jshr.1904.796
History: Received October 20, 1975 , Accepted July 7, 1976
 
Journal of Speech, Language, and Hearing Research, December 1976, Vol. 19, 796-812. doi:10.1044/jshr.1904.796
History: Received October 20, 1975; Accepted July 7, 1976

This study was concerned with the extraction, description, and verification of visual perceptual features underlying vowel lipreading performance. Ten viewers with normal hearing rated the visual similarity of pairs of 15 vowels and diphthongs presented in an /h_g/ context by four speakers. Multidimensional scaling techniques were used to extract potential perceptual features which were then labeled by the experimenters. The resulting perceptual dimensions were correlated with physical measurements of lip shape to evaluate the adequacy of the feature labels. The results indicated that the traditional extended-rounded vowel feature and a vertical lip separation feature were the characteristics most prominent in judging the stimuli. In addition, a feature related to overall area of maximum lip opening and two features unique to diphthong perception were tentatively identified.

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