韵律特征研究

介绍从知觉、认知和语料库分析角度对汉语韵律特征进行的一系列研究。（1）韵律特征知觉：用实验心理学和知觉标注的语料库分析方法，研究汉语语调和音高下倾与降阶问题，语句和语篇中知觉可以区分的韵律层级及相关的声学线索。研究结果支持汉语语调的双线模型理论和语句音高下倾的存在；证明语篇中知觉可以区分的韵律边界是小句、句子和段落，及其知觉相关的声学线索。（2）韵律特征与其他语言学结构的关系：在标注的语料库的基础上，用常规统计方法研究语句常规重音分布规律、语篇信息结构与重音的关系、并用决策树方法研究根据文本信息确定韵律短语边界和焦点的规则。（3）韵律特征在语篇理解中的作用：用实验心理学方法和脑电指标研究韵律对语篇信息整合和指代理解的影响，揭示其作用的认知和神经机制。讨论了这些研究结果对语音工程、语音学理论和心理语言学研究的实践和理论意义

Studies on Speech Prosody

Prosody is the phonological structure of spoken language, plays important role in speech production and comprehension. This paper reviewed a series investigations on prosody conducted in the Lab of Spoken Language Processing in recent years. (1) The intonation and declination of fundamental frequency in Chinese sentences, prosodic boundaries in discourses and their perceptually relevant acoustic cues were investigated with both psychological experiments and speech corpus analyses. The results give a support in “two contours theory” of Chinese intonation and the existence of F0 declination; (2)The relations between accentuation, syntactic structure, and information structure, as well as the rules of assignment of prosodic phrase boundaries and focuses in written sentences and discourses were investigated with the methods of both statistical analyses and knowledge discovery on the bases of labeled speech corpus. (3)The roles of prosody in information integration and pronoun understanding in discourses were explored with both behavioral and ERP experiments. The consequence of the results for the development of speech engineering system and implications for the theories of spoken discourse processing were discussed