The korean journal of orthodontics (대한치과교정학회지)

The Korean Association Of Orthodontists (대한치과교정학회)
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A SOUND SPECTROGRAPHICAL STUDY ON THE KOREAN VOWELS AND CONSONANTS PRONOUNCED BY OPENBITE PATIENTS - Frequency Analysis -

SOUND SPECTROGRAPH를 이용한 개교환자의 한국어 자${\cdot}$모음의 발성에 관한 연구 - 주파수 분석을 중심으로 -

  • Kim, Ki-Dal (Dept. of Orthodontics, Seoul National University) ;
  • Yang, Won Sik (Dept. of Orthodontics, Seoul National University)
  • 김기달 (서울대학교 치과대학 교정학교실) ;
  • 양원식 (서울대학교 치과대학 교정학교실)
  • Published : 1985.03.01
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Abstract

The study was undertaken to ascertain the speech defect of patients with malocclusion, especially of openbite patients, by means of the spectral analysis method. The experimental group was composed of ten female openbite patients and their mean age was 13.8 yrs. The control group was also composed of ten female girls and their mean age was 13.7 yrs. As for the speech material, eight Korean monophthrongs and two Korean fricatives and two affricatives were used. Speeches were recorded and then analyzed by a Kay 7800 digital sonagraph. Formant frequency level or range was used as a phonemic parameter. The results were as follows: 1. Among Vowels /a:/ : $F_1,\;F_3\;and\;F_1/F_2$ showed abnormality. /o:/ and $/w:/:F_2,\;F_2-F_1\;and\;F_1/F_2$ showed abnormality. 2. Among Consonants /S/ and /h/ : The upper and lower borders of the frequency range showed abnormality. (equation omitted) : The lower border of the frequency range showed abnormality. $/C^{h}/$ : The upper and lower borders of the frequency range and concentration point showed abnormality.

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