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KMID : 0384020080190020133
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Journal of the Korean Society of Logopedics and Phoniatrics
2008 Volume.19 No. 2 p.133 ~ p.135
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The Acoustic Characteristics of Articulation and Phonation in Peritonsillar Abscess
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Choi Hyun-Jin
Jin Sung-Min
Yeo Jang-Ok
Huh Se-Hyung
Song Yun-Kyung
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Abstract
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Background and Objectives: The voice changes can occur in peritonsillar abscess and the labeling of this changes as a "muffled voice". The aim of this study was to investigate the changes in acoustic feature of voice before and after treatment in patients with peritonsillar abscess.
Materials and Method: 12 patients with peritonsillar abscess were enrolled in the study. Acoustic analysis on sustained Korean vowels /a/, /i/ and /u/ were performed before and after treatment.
Results: In patients with peritonsillar abscess, the first formant frequency (F1) and second formant frequency (F2) of /a/ were decreased. There was tendency of articulation of back-low vowel /a/ as back-high vowel /u/. F1 of /i/ and /u/ were increased, while F2 were decreased. There was tendency of articulation of front-high vowel /i/ as back-low vowel /a/. The third, forth, fifth formant frequency (F3, F4, F5) of /a/, /i/ and /u/ were decreased although statistically not significant.
Conclusion: The anatomical and functional changes of oropharynx by peritonsillar abscess can cause changes in resonance and speech quality. We suggest that these changes could be the cause of ’muffled voice’ in patients of peritonsillar abscess.
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KEYWORD
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Peritonsillar abscess, Formant, Muffled voice
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