Acoustic measures are used to document the speech of a 6-year-old child with persistent /r/-distortion through several treatment interventions. The child originally presented a complex of speech disorders and was treated by a speech-language pathologist using phonological process techniques. The procedures successfully corrected most of his speech problems, although /r/ remained severely distorted. The primary acoustic manifestation of this distortion was a high third formant. Surgical correction of a banded lingual frenulum, along with adenoton-sillectomy indicated for sleep apnea, is shown to have had a small effect in lowering the third formant. A dramatic change was seen on reintroduction of therapy, when an extreme drop in third formant frequencies for /r/ was observed. The acoustic data are interpreted using speaker-internal controls derived from a dialect-appropriate adult model.
CITATION STYLE
Hagiwara, R., Fosnot, S. M., & Alessi, D. M. (2002, September). Acoustic phonetics in a clinical setting: A case study of /r/-distortion therapy with surgical intervention. Clinical Linguistics and Phonetics. https://doi.org/10.1080/02699200210128963
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