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영어 감정발화와 중립발화 간의 운율거리를 이용한 감정발화 분석

An analysis of emotional English utterances using the prosodic distance between emotional and neutral utterances

말소리와 음성과학 2020년 12권 3호 p.25 ~ 32
이서배,
소속 상세정보
이서배 ( Yi So-Pae ) - Humphreys West Elementary School Department of Defense Education Activity

Abstract


An analysis of emotional English utterances with 7 emotions (calm, happy, sad, angry, fearful, disgust, surprised) was conducted using the measurement of prosodic distance between 672 emotional and 48 neutral utterances. Applying the technique proposed in the automatic evaluation model of English pronunciation to the present study on emotional utterances, Euclidean distance measurement of 3 prosodic elements such as F0, intensity and duration extracted from emotional and neutral utterances was utilized. This paper, furthermore, extended the analytical methods to include Euclidean distance normalization, z-score and z-score normalization resulting in 4 groups of measurement schemes (sqrF0, sqrINT, sqrDUR; norsqrF0, norsqrINT, norsqrDUR; sqrzF0, sqrzINT, sqrzDUR; norsqrzF0, norsqrzINT, norsqrzDUR).
All of the results from perceptual analysis and acoustical analysis of emotional utteances consistently indicated the greater effectiveness of norsqrF0, norsqrINT and norsqrDUR, among 4 groups of measurement schemes, which normalized the Euclidean measurement. The greatest acoustical change of prosodic information influenced by emotion was shown in the values of F0 followed by duration and intensity in descending order according to the effect size based on the estimation of distance between emotional utterances and neutral counterparts. Tukey Post Hoc test revealed 4 homogeneous subsets (calmFurthermore, the analysis of each of the 7 emotions showed that the present research outcome is in the same vein as the results of the previous study.

키워드

emotional utterance; prosody; euclidean distance; arousal; valence; stance

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