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Related Experiment Videos

Articulation after uvulopalatopharyngoplasty

K Nakai1, A Sakakura, H Takahashi

  • 1Department of Otolaryngolgy, Osaka Medical College, Japan.

European Archives of Oto-Rhino-Laryngology : Official Journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : Affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery
|January 1, 1996
PubMed
Summary

Uvulopalatopharyngoplasty (UPPP) surgery did not significantly alter Japanese patient articulation or vowel timbre. Acoustic analysis confirmed minor formant frequency shifts within normal variation, with no changes in voice onset time for /ka/.

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Area of Science:

  • Otolaryngology
  • Speech Science
  • Acoustic Phonetics

Background:

  • Uvulopalatopharyngoplasty (UPPP) is a surgical procedure for sleep apnea.
  • The impact of UPPP on speech articulation and phonetics requires further investigation.

Purpose of the Study:

  • To evaluate the effects of UPPP on speech articulation in Japanese patients.
  • To analyze acoustic changes in Japanese vowels and /ka/ following UPPP.

Main Methods:

  • Perceptual listening tests on 25 monosyllables and 5 Japanese vowels.
  • Acoustic analysis of vowel formants, voice onset time, and F2 transition for /ka/.

Main Results:

  • No significant changes in articulation scores or vowel timbre were observed post-UPPP.

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  • While some formant frequencies shifted, these changes were within normal intraindividual variation.
  • Acoustic analysis of /ka/ showed no significant changes in voice onset time or F2 transition.

    • Conclusions:

    • UPPP does not significantly impair speech articulation or vowel acoustics in Japanese patients.
    • Observed acoustic variations after UPPP are minor and fall within natural speech variability.