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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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This study presents the acoustic characteristics of Korean alveolar fricative /s/, articulated by 2 groups of children. The subjects were 18 three-year-old children and 18 seven-year-olds reportedly without articulation problems. They have lived in Daejeon. The test material was comprised of 14 categories: 7 CV syllables /si, se, sa, s?, so, su, s?/ and 7 VCV syllables /isi, ese, asa, ?s?, oso, usu, ?s?/. By using spectral moment variables such as skewness, center of gravity(c.o.g., hereafter), kurtosis and central moment, the spectral characteristics of the [pure noise + aspiration] of [s] was measured.
As a result, the values of all of the variables taken from each subject group(3-year-olds and 7-year-olds) showed a statistically meaningful difference among 7 vowel environments and syllable structures. Regardless of the syllable structures, when the high vowels /i, u, ?/ and /s/ combined, both 3-year-olds and 7-year-olds showed no significant distinction with respect to the skewness and c.o.g.. But in case of /se, sa, s?, so/, a meaningful difference was observed. This explains that 3-year-olds" articulation was imperfect compared with that of 7-year-olds.. This is because that when pronouncing high-vowel combined /si, su, s?/, one simply has to control lips from the articulation /s/ while /se, sa, s?, so/ require more complex chin movement for the following vowels.
When compared by vowel environment, both 3-year-old and 7-year-old groups showed a statistitically meaningful difference between /si/ and /se, sa, s?, so, su/. The fact that the combination of vowel /i/ and /s/ is comparatively easy articulation seems to lead to the uniqueness of /si/. In case of the 3-year-old group, /so-su/ and /so-s?/, and /su-s?/ relations showed meaningful differences. /so/ shows lower spectral distribution compared with /su & s?/. Although the labialization process of /su/ has the front cavity lengthened, /s?/ shows much lower spectral distribution compared to that of /su/. The 3-year-olds’ immatured articulation seems to make this happen.
As a result, the values of all of the variables taken from each subject group(3-year-olds and 7-year-olds) showed a statistically meaningful difference among 7 vowel environments and syllable structures. Regardless of the syllable structures, when the high vowels /i, u, ?/ and /s/ combined, both 3-year-olds and 7-year-olds showed no significant distinction with respect to the skewness and c.o.g.. But in case of /se, sa, s?, so/, a meaningful difference was observed. This explains that 3-year-olds" articulation was imperfect compared with that of 7-year-olds.. This is because that when pronouncing high-vowel combined /si, su, s?/, one simply has to control lips from the articulation /s/ while /se, sa, s?, so/ require more complex chin movement for the following vowels.
When compared by vowel environment, both 3-year-old and 7-year-old groups showed a statistitically meaningful difference between /si/ and /se, sa, s?, so, su/. The fact that the combination of vowel /i/ and /s/ is comparatively easy articulation seems to lead to the uniqueness of /si/. In case of the 3-year-old group, /so-su/ and /so-s?/, and /su-s?/ relations showed meaningful differences. /so/ shows lower spectral distribution compared with /su & s?/. Although the labialization process of /su/ has the front cavity lengthened, /s?/ shows much lower spectral distribution compared to that of /su/. The 3-year-olds’ immatured articulation seems to make this happen.
목차
1. 머리말
2. 연구방법
3. 연구결과
4. 맺음말 및 토의
참고문헌
Abstract
참고문헌 (2)
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UCI(KEPA) : I410-ECN-0101-2016-710-001842080