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손남호(Nam-Ho Sohn),이호영(Ho-Young Lee),황효성(Hyosung Hwang) 사단법인 한국언어학회 2015 언어학 Vol.0 No.72
This paper aims to propose a method to induce emotional speech naturally and to carry out basic acoustic analyses of emotional speech. Previous research into emotional speech relied on the recordings of actors’ acted speech. Since actors’ emotional speech is often stereotyped, we established a method to help ordinary people to produce emotional speech relatively easily by using emotion inducing video clips edited from Korean films and dramas. 43 students and 20 actors and actresses participated in the recording. They were asked to read the subtitles embedded on the video clips while maintaining induced emotions. A test sentence, “Neo Nagiju ara? (Do you know Nagiju?)”, was included in the subtitles on the video clips. A perception test was conducted to choose top 50 natural sounding speech files of the test sentence for each emotion (i.e. anger, anxiety or neutral emotion). The result of this perception test shows that the proposed method was successful in inducing emotions naturally. The results of the acoustic analysis of the selected emotional utterances show that anger is realized with the highest pitch and biggest intensity and anxiety with the lowest pitch and weakest intensity. At the latter part of anxious speech, breathiness was observed.