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논문 기본 정보

자료유형
학술저널
저자정보
강영애 (충남대학교) 윤규철 (영남대학교) 김재옥 (강남대학교)
저널정보
한국음성학회 말소리와 음성과학 말소리와 음성과학 제4권 2호
발행연도
2012.6
수록면
95 - 104 (10page)

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초록· 키워드

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Thyroidectomy patients may have vocal paralysis or paresis, resulting in a breathy voice. The aim of this study was to investigate the aerodynamic and acoustic characteristics of a breathy voice in thyroidectomy patients. Thirty-five subjects who have vocal paralysis after thyroidectomy participated in this study. According to perceptual judgements by three speech pathologists and one phonetic scholar, subjects were divided into two groups: breathy voice group (n=21) and non-breathy voice group (n=14). Aerodynamic analysis was conducted by three tasks (Voicing Efficiency, Maximum Sustained Phonation, Vital Capacity) and acoustic analysis was measured during Maximum Sustained Phonation task. The breathy voice group had significantly higher subglottal pressure and more pathological voice characteristics than the non breathy voice group. Showing 94.1% classification accuracy in result logistic regression of aerodynamic analysis, the predictor parameters for breathiness were maximum sound pressure level, sound pressure level range, phonation time of Maximum Sustained Phonation task and Pitch range, peak air pressure, and mean peak air pressure of Voicing Efficiency task. Classification accuracy of acoustic logistic regression was 88.6%, and five frequency perturbation parameters were shown as predictors. Vocal paralysis creates air turbulence at the glottis. It fluctuates frequency-related parameters and increases aspiration in high frequency areas. These changes determine perceptual breathiness.

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ABSTRACT
1. 서론
2. 연구 대상 및 절차
3. 연구 결과
4. 결론 및 논의
감사의 글
참고 문헌
<부록 1> PAS 3 과제별 변수 목록
<부록 2> MDVP 34개 변수의 8개 항목 분류

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UCI(KEPA) : I410-ECN-0101-2013-701-003321770