The aim of this study is to investigate the functions and prosodic features of discourse markers based on casual conversations in spoken language corpus. Discourse markers are frequently observed in the spoken language with its own discourse functions...
The aim of this study is to investigate the functions and prosodic features of discourse markers based on casual conversations in spoken language corpus. Discourse markers are frequently observed in the spoken language with its own discourse functions. In the previous studies, discourse markers were analysed focused on grammatical, semantic characteristics and discourse functions. However, this study focuses on prosodic features of discourse markers, thereby discussing their relevance to the functions and prosodic features of discourse markers.
In chapter 2, it has been presented a selection method and analysis of data. It refers to the selection criteria and the method of discourse markers in this study. In addition, it presents the prosodic analysis of discourse markers. The cues of prosodic features were prosodic environments (positions in utterance and prosodic boundary) and prosodic factors (tonal patterns, duration, and pause).
In chapter 3, the frequency of discourse markers was investigated and the functions and prosodic features of all discourse markers were analyzed. As a result, discourse markers were 39 kinds and 2,202 times. The accumulation rate of ‘mwo’, ‘geu’, ‘jom’ and ‘mak’ is 57.6%, in addition to the ‘ije’, ‘ani’, ‘geunyang’, ‘ileohge’, ‘geuleonikka’, ‘ah’, ‘wae’ and ‘mwoji’, the accumulation rate is 90.8%. As a result of observing the gender realization, males were used often realized discourse marker than females. In order to analyze the functions and prosodic features of discourse markers, discourse markers were classified into five categories, adverb types, pronoun types, prenoun types, interjection types, conjugation of noun and verbal type. Based on this, various functions and prosodic features of the discourse markers were investigated.
In chapter 4, comprehensive results were identified by 15 types of functions of the discourse markers. The functions of discourse markers were as follows. Firstly, functions related to the topic are ‘topic initiation’, ‘topic switching’ and ‘topic closing’. Secondly, functions related to the discourse strategy are ‘maintenance of utterance’, ‘interruption’, ‘repair’, and ‘attention’. Finally, functions related to the contents of discourse are ‘utterance mitigation’, ‘focus’, ‘negative manner’, ‘refutation’, ‘hesitation’, ‘politeness’, ‘devaluation’ and ‘abandonment’. The function of ‘maintenance of utterance’ was used most frequently among overall functions, ‘utterance mitigation’, ‘focus’, ‘negative manner’, ‘interruption’, ‘refutation’, ‘topic initiation’ followed. These functions have salient prosodic features related to their functions.
In chapter 5, as the ways of applying the results of this study, it was considered the way that can have implications in Korean education as a foreign Language and speech synthesis and speech recognition. In the field of Korean education as a foreign Language, the functions and prosodic features of discourse markers can be used as educational materials for Korean language learners. In the field of speech synthesis and speech recognition, in view of the prosodic features of discourse markers, by utilizing a speech synthesis system, it can be possible to improve the naturalness of the speech synthesis results.
This study has significances as follows: This study was objectively analyzed the prosodic features of discourse markers by using speech data and speech analysis program. In addition, this study was presented comprehensively prosodic features associated with the functions of discourse markers. Through the study of such prosodic features of discourse markers, the scope of studies on the discourse markers can be extended.
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