전기성문파형검사로 측정한 모음별 기본주파수, 성대접촉률, jitter 및 shimmer = Fundamental Frequency, Closed Quotient, Jitter, and Shimmer of Vowels on Electroglottography

국문 초록 (Abstract)

배경 및 목적: 모음에 따른 말소리길의 모양과 크기 변화는 후두 구조물 간의 위치 및 기능에 영향을 미쳐 성대의 접촉과 진동 양상에 변화를 초래한다. 이와 관련하여 모음별 후두의 양상에 대한 여러 측면의 선행연구들이 있지만 이들로부터 얻어진 결론들은 일관성이 부족하다. 이에 본 연구는 한국어 모음을 산출할 때 모음별로 후두에 미치는 영향이 어떻게 다른지를 전기성문파형검사(electroglottography: EGG)를 통해 살펴보고, 성별에 따른 차이가 있는지도 살펴보고자 하였다. 방법: 본 연구는 만 18～40세의 한국 정상 성인 남자 36명과 여자 36명을 대상으로 한국어 모음 /아/, /에/, /오/, /이/, /우/ 모음을 연장 발성하는 동안 EGG를 통해 모음별 기본주파수(Fo), 성대접촉률(CQ), jitter 및 shimmer를 측정하였다. 결과: 고모음 /이/와 /우/가 저모음 /아/에 비해 Fo, CQ 및 shimmer는 높았으나 jitter는 낮았다. 또한 jitter를 제외한 모든 값에서 성별에 따른 차이를 보였다. 논의 및 결론: 본 연구 결과와 선행연구 결과들을 비교해볼 때, 한국어 모음도 다른 언어처럼 모음에 따라 내재적 음도가 존재하며, 말소리 길의 변화에 따른 성대접촉 양상이나 성대 진동 양상은 개인의 발성기전에 따라 다르게 작용할 수 있다는 것을 알 수 있었다.

다국어 초록 (Multilingual Abstract)

Background & Objectives: Laryngeal function is affected by supralaryngeal (vocal tract) shape and size during speech. The previous studies investigating the laryngeal changes among vowels did not have coherent conclusions. The purpose of the present study was to investigate the influence of vowel context on laryngeal function measured by electroglottography (EGG). Method: Thirty-six normal adult men and 36 normal adult women prolonged the vowels /a/, /e/, /o/, /i/, /u/ at a comfortable level. The vowels were recorded by EGG and analyzed with fundamental frequency (Fo), closed quotient (CQ), jitter, and shimmer. Results: Fo, CQ, jitter, and shimmer were significantly different according to the vowel: vowels /i/ and /u/ had highervalues than the low vowel /a/ in Fo, CQ, and shimmer, but vice versa for jitter. Discussion & Conclusion: By comparing previous studies with the present study, vowel context was shown to strongly affect the intrinsic pitch of vowels and vocal frequency perturbation by changing vocal configuration, although providing negligible effect on glottal closure and vocal amplitude perturbation.

목차 (Table of Contents)

• Ⅰ. 서론
• Ⅱ. 연구 방법
• Ⅲ. 연구 결과
• Ⅳ. 논의 및 결론
• 참고문헌
• ABSTRACT
• REFERENCES

참고문헌 (Reference)

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