Spectral Study of Deviant Resonance in the Speech of Women Who Are Deaf In a previous radiographic study of 4 deaf women, some aberrant features in vocal tract configuration were identified for vowels produced with excessive pharyngeal resonance These features included neutralization of tongue position, elevation of the hyoid, and a retraction of the tongue, associated with a deflection of the epiglottis in ... Research Note
Research Note  |   June 01, 1992
Spectral Study of Deviant Resonance in the Speech of Women Who Are Deaf
 
Author Affiliations & Notes
  • Joanne D. Subtelny
    National Technical Institute for the Deaf Rochester, NY
  • Robert L. Whitehead
    National Technical Institute for the Deaf Rochester, NY
  • Vincent J. Samar
    National Technical Institute for the Deaf Rochester, NY
Article Information
Speech / Research Note
Research Note   |   June 01, 1992
Spectral Study of Deviant Resonance in the Speech of Women Who Are Deaf
Journal of Speech, Language, and Hearing Research, June 1992, Vol. 35, 574-579. doi:10.1044/jshr.3503.574
History: Received March 14, 1990 , Accepted August 7, 1991
 
Journal of Speech, Language, and Hearing Research, June 1992, Vol. 35, 574-579. doi:10.1044/jshr.3503.574
History: Received March 14, 1990; Accepted August 7, 1991

In a previous radiographic study of 4 deaf women, some aberrant features in vocal tract configuration were identified for vowels produced with excessive pharyngeal resonance These features included neutralization of tongue position, elevation of the hyoid, and a retraction of the tongue, associated with a deflection of the epiglottis in the lower pharynx The vowels, produced simultaneously with X-ray exposure, were analyzed spectrographically to study acoustic correlates of the vocal tract deformation. Comparisons of the formants for vowels /i/ /u/ and /a/ produced by the deaf women with mean formant values for these vowels produced by normal-hearing women revealed no consistent pattern of second-formant deviation Formant structure evaluated on isovowel lines disclosed consistent neutralization of vowels, with F2. values clustering in the 1500–2100 Hz frequency range, which is attributed to the observed restricted horizontal movements of the tongue within the oral and pharyngeal cavities If such restrictions affect the production of all vowels, a lower F2 might be assumed for the front vowels, which normally have a high F2, a higher F2 frequency would be anticipated for back vowels, which normally have a low F2 The limited sample studied supports this assumption

Acknowledgments
This work was conducted under an agreement between the National Technical Institute for the Deaf at the Rochester Institute of Technology and the United States Department of Education, with the cooperation of the Eastman Dental Center. The radiographic study was completed at Eastman Dental Center under the direction of J. Daniel Subtelny in partial fulfillment of requirements for the master of science degree granted to Walter Li by the University of Rochester, 1980 . The authors gratefully acknowledge the assistance of the 4 young women from the National Technical Institute for the Deaf who served as subjects and of Brenda Whitehead who assisted in the auditory screening and judgment ratings of speech and voice. First author Joanne D. Subtelny passed away on August 27, 1991. Her exceptional competence, enthusiasm, and leadership are acknowledged.
Order a Subscription
Pay Per View
Entire Journal of Speech, Language, and Hearing Research content & archive
24-hour access
This Article
24-hour access