학술논문
Digital Sound spectrograph 및 Nasometer를 사용한 악교정 수술환자의 술전후 음향음성학적 특성에 관한 비교연구
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- 영문명
- A comparative acoustic study pre and post orthognathic surgery using digital sound spectrograph and nasometer
- 발행기관
- 대한구강악안면외과학회
- 저자명
- 양일수(Il Soo Yang) 신효근(Hyo Keun Shin)
- 간행물 정보
- 『대한구강악안면외과학회지』대한구강악안면외과학회지 제20권 제4호, 443~459쪽, 전체 17쪽
- 주제분류
- 의약학 > 내과학
- 파일형태
- 발행일자
- 1994.10.30
4,840원
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국문 초록
영문 초록
Advanced electronic technology has resulted in the ability to objectively analyzed and display speech characteristics.
The mandibular prognathism patients had modified the place of articulation in comparison to preoperation. The acoustic characteristics appeared in the acoustic resonance. Assessment of resonance was measured by a High Speed Analysis System using PC with DSP. This personal computer-based speech analysis system performs spectrographic analysis in real time. The testing words consisted of the simple vowels-/i/,/e/,/u/,/a/-, and the CVC phonetic contexts containing the bilabial consonants both fricative and lateral.
Separately from the spectrographic analysis, a Nasometer was used for measuring the indirect assessment of vocal tract physiology. This device measures the oral and nasal components of a subject s speech: the components are picked up by microphones on either side of sound separator that rests on the upper lip. The signal from each of the micro-phones is filtered and digitalized by custom electronic modules. The resultant signal ratio multiplied by 100 and is expressed as a nasalance score.
The tested utterances were selected by simple words containing the vowels /i/,/e/,/u/,/o/,/a/, and CVC phonetic environments containing the nasal consonants /m/ and /n/ with the high vowel /i/ and low vowel /a/.
The three different types of nasal phrases were used to test no nasal passage, mild nasal passage and high nasal passage.
The author obtained the results using these acoustic methods as follows:
1. The first formant of the mandibular prognathism pre-operation group was higher the control group than post-operation. This varation of F1 is most responsive to changes in mouth opening. Opening mouth sounds are characterized by relatively high frequency first formants.
2. The second formant of the mandibular prognathism pre-operation group was lower than that of the control group: this means that the vocal tract of the mandibular prognathism group was longer than the control group. The vocal tracts of these patients were affected after the mandibular prognathism operation. Therefore the F2 was higher after operation.
3. On the vowel chart, the author found that athe place of articulation after operation moved backward.
4. The Voice Onset Time, Vowel duration and total duration after operation increased in comparison with pre-operation, these results were assessed by the delayed of the articulation reaction time.
5. Nasalance of post-operation increased in comparison with the preoperation, this means that the velopharyngeal function was acted in these cases.
목차
Abstract
I. 서론
II. 연구대상 및 방법
III. 연구결과
IV. 총괄 및 고찰
V. 결론
참고문헌
해당간행물 수록 논문
- Digital Sound spectrograph 및 Nasometer를 사용한 악교정 수술환자의 술전후 음향음성학적 특성에 관한 비교연구
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- 골격성 3급 부정교합자의 교합평면에 관한 연구
- 가토 두개골 결손부에서 막성 및 연골성 탈회골기질의 재생능에 관한 연구
- 가토에서 자가이개연골을 이용한 관절원판의 대체에 관한 실험적 연구
- 下顎技 斜線骨折斷術이 顎關節에 미치는 影響에 關한 硏究
- 유도당뇨백서에 매식된 수산화인회석의 조직반응
- 구강악안면 외과 환자관리 전산화
- 안면부에 발생한 괴사성 근막염
- Sirognathography를 이용한 顎矯正手術後 下顎運動의 變化에 關한 硏究
- 치성의 괴사성 협부 및 측두부 근막염 치험례
- 구개부에 발생한 다형성선종
참고문헌
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