话语结构、信息与韵律特征

Discourse is a integrated linguistic unit which consists of several utterances. The main object of this project is to explore the relationship between prosody and information strucutre, the acoustic cues of prosody perception, and the role of prosody in discourse comprehension. Based on large corpus labeling which included acoustic labeling, information structure labeling, and prosodic labeling, the following questions have been studied: the prosodic realization of given-new information and it's acoustic cues; the acoustic cues of prosodic boundary in discourse. It was found that:⑴ The information structure is realized by means of prosodic variation. The difference of stress degree reflects the Given and New information, while the degree of stress of the New information is higher than that of Given information. The prosodic boundary degree reflects the structure of large information units. The larger the information unit is, the higher the prosodic boundary degree is.⑵There is no direct correlation between Give/New information and acoustic parameters. The acoustic difference of Given/New information is determined by the difference of stress degree.

话语是由语句组成的完整的语言单位，本项目研究话语结构、信息与韵律特征的关系及知觉相关的声学语音学线索，并探讨韵律特征在话语分析和理解中的作用。研究结果对认识口语认知过程具有理论意义，并对汉语言语工程中人机对话系统和话语翻译系统的开发和研制具有重要的现实意义。