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The purpose of this study was to gain a better understanding of how abnormal laryngeal mechanical valving actions might contribute to excessive air volume expenditures during the speech of the deaf. High-speed laryngeal film and high-quality acoustic data were collected simultaneously from two normally hearing and four hearing-impaired adults. Results indicate that hearing-impaired speakers (a) may be unable to control the intrinsic laryngeal musculature which maintains periodic vocal fold oscillation, and (b) may exhibit inappropriate positioning of laryngeal structures during speech production.
Submitted on August 23, 1982
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