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KMID : 1022420220140020039
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Phonetics and Speech Sciences
2022 Volume.14 No. 2 p.39 ~ p.54
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Korean prosodic properties between read and spontaneous speech
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Yu Seung-Mi
Rhee Seok-Chae
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Abstract
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This study aims to clarify the prosodic differences in speech types by examining the Korean read speech and spontaneous speech in the Korean part of the L2 Korean Speech Corpus (speech corpus for Korean as a foreign language). To this end, the articulation length, articulation speed, pause length and frequency, and the average fundamental frequency values of sentences were set as variables and analyzed via statistical methodologies (t-test, correlation analysis, and regression analysis). The results found that read speech and spontaneous speech were structurally different in the form of prosodic phrases constituting each sentence and that the prosodic elements differentiating each speech type were articulation length, pause length, and pause frequency. The statistical results show that the correlation between articulation speed and articulation length was highest in read speech, explaining that the longer a given sentence is, the faster the speaker speaks. In spontaneous speech, however, the relationship between the articulation length and the pause frequency in a sentence was high. Overall, spontaneous speech produces more pauses because short intonation phrases are continuously built to make a sentence, and as a result, the sentence gets lengthened.
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KEYWORD
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L2KSC, read speech, spontaneous speech, articulation speed, articulation length, pause frequency, pause length, Korean language, prosodic properties
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