말소리와 음성과학 (Phonetics and Speech Sciences)

  • 제13권3호
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  • Pages.53-64
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  • 2021
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  • 2005-8063(pISSN)
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  • 2586-5854(eISSN)
한국음성학회 (Korean Society of Speech Sciences)
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모어청자에 의한 일본어 어두 폐쇄음의 지각

Perception of Japanese word-initial stops by native listeners

  • 투고 : 2021.07.30
  • 심사 : 2021.09.13
  • 발행 : 2021.09.30
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초록

일본어의 어두 폐쇄음은 일차적으로 VOT로 구별되며 유성음은 음 값의 VOT, 무성음은 양 값의 VOT를 갖는 것으로 알려져 있다. 최근의 연구에 의하면 유성음이 양 값의 VOT를 갖는 어두 유성 폐쇄음의 무성화 현상이 전국적으로 젊은 층을 중심으로 진행되고 있는 것이 확인되었다. 또한 지역마다 정도의 차이는 있으나 어두 폐쇄음 구별에 VOT 이외에 후속 모음의 F0 차이가 유효한 것이 밝혀졌다. 본고는 산출에 쓰이는 음향 변수 VOT와 F0가 지각 변수로도 유효한지를 검토한 것이다. 4개 지역의 대학생 55명을 대상으로 자연음과 합성음을 이용한 세 가지 지각 실험을 실시한 결과는 어느 지역에서나 어두 폐쇄음의 일차적 지각 변수로 기능하는 것은 VOT이며 예상했던 F0의 사용은 극히 한정적인 것으로 나타났다. F0는 VOT가 기능하지 않을 때에 높은 F0를 무성음으로 지각하는 경우는 있으나 반대로 낮은 F0를 유성음으로 지각하는 경우는 거의 보이지 않았다. 이러한 결과는 유성/무성의 구별에 관여하는 산출의 음향 변수와 지각 변수가 일치하지 않는 것을 뜻하며, 나아가 일차적 변수인 VOT의 구별이 어려운 상황에서도 F0의 적극적인 사용 없이 일상생활에서 유성/무성의 구별에 혼란이 없는 것은 VOT와 F0 이외의 다른 요인이 관여하고 있음을 시사한다. 본고에서는 산출에서 어느 정도 관여가 인정된 모음의 음질(H1-H2)이나 음향 변수가 아닌 문맥이 관여하고 있을 가능성에 대해 논하였으나 이에 대한 검증은 앞으로의 과제로 남아 있다.

It is known that the voicing contrast for Japanese word-initial stops is primarily realized as differences in the voice onset time (VOT). However, recent studies have reported that voiced stops are more often produced with a positive VOT than with a negative VOT among the younger generation nationwide. It is also known that post-stop F0 is associated with the stop contrast, but the degree of F0 use differs from region to region. This study explores whether the difference in post-stop F0 functions as a perceptual cue to the stop contrast along with VOT. Fifty-five college students who are native listeners from four different regions participated in two or three perception tests. The results show that VOT is a primary cue to the voiced-voiceless distinction of word-initial stops, but that the effect of post-stop F0 on the stop contrast is marginal. The post-stop F0 is involved in perception only when VOT is ambiguous, such that a sound with high F0 is more often perceived as a voiceless stop, but not vice versa. The results of this study indicate that the acoustic parameters associated with the stop contrast are not the same in production and perception, and suggest that other factors such as context, which is not an acoustic characteristic, may also be involved in the stop contrast.

키워드

과제정보

본 연구는 JSPS KAKENHI의 지원을 받아 수행되었습니다(과제번호: JP19K00634, JP20K00642).

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