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논문 기본 정보

자료유형
학술저널
저자정보
김춘혁 (한림대학교) 이승완 (한림대학교) 진인기 (한림대학교) 김진숙 (한림대학교)
저널정보
대한청각학회 Journal of Audiology & Otology Journal of Audiology & Otology Vol.22 No.2
발행연도
2018.1
수록면
80 - 88 (9page)

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Although Ling 6 sounds are often used in the rehabilitationprocess, its acoustic features have not been fully analyzed and represented in cortical responses. Current study was aimed to analyze acoustic features according to gender andemotional statuses of core vowels of Ling 6 sounds, /u/, /a/, and /i/. Cortical auditoryevoked potentials (CAEPs) were also observed in those vowels. Subjects and Methods:Vowel sounds /u/, /a/, and /i/ out of Ling 6 sounds representing low, middle and high frequencieswere recorded from normal 20 young adults. The participants watched relevant videosfor 4-5 minutes in order for them to sympathize emotions with anger (A), happiness (H),and sadness (S) before producing vowels. And without any emotional salience, neutrally productionwas performed. The recording was extracted for 500 ms to select pure vowel portionof production. For analysis of CAEP, the latencies and amplitudes of P1, N1, P2, N2, N1-P2were analyzed. Results: Intensities of /u/, /a/, and /i/ were 61.47, 63.38, and 60.55 dB. Theintensities of neutral (N), H, A, S were 60.60, 65.43, 64.21, and 55.75 dB for vowel /u/, vowel/a/ were 61.80, 68.98, 66.50, and 56.23 dB, and vowel /i/ were 59.34, 64.90, 61.90, and56.05 dB. The statistical significances for vowel and emotion were found but not for gender. The fundamental frequency (F0) of vowels for N, A, H, and S were 168.04, 174.93, 182.72,and 149.76 Hz and the first formant were 743.75, 815.59, 823.32, and 667.62 Hz. The statisticalsignificance of F0 was found by vowel, emotion, and gender. The latencies and amplitudesof CAEP components did not show any statistical significance according to vowel. Conclusions: Ling 6 sounds should be produced consistently in the rehabilitation processfor considering their difference of intensities and frequencies according to speaker’s emotionsand gender. The vowels seemed to be interpreted as tonal stimuli for CAEP components ofthis study with similar acoustic features among them. Careful selection of materials is necessaryto observe meaningful conclusion of CAEP measurement with vowel stimuli.

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