论文部分内容阅读
主要研究了语篇中句子、段落等大尺度信息单元边界的韵律等级以及边界处的声学线索。对10个语篇语料库进行了韵律等级标注和声学分析。研究得到以下主要结论: (1)语篇中有韵律意义的大尺度信息单元有小句(对应语调短语)、句子(包括单句和复句)和段落。单句和复句边界没有知觉等级和声学特征上的显著区别,对应同一韵律单元。 (2)大尺度韵律边界等级的音高线索是通过边界前后音节的音高对比实现的,即音高重置程度。仅有首音节或末音节处的单一声学线索不足以区分边界等级。(3)段落和复句内的语调短语基本以平行的模式存在,没有明显的、规律性的整体语调下倾的现象。 (4)信息单元越大,无声段越长且变化的自由度越大。另外,在小句边界处无声段与音高重置程度显著正相关。
Mainly studies the rhythm level of large-scale information unit boundaries such as sentence and paragraph in discourse and the acoustic clues at the boundary. Ten corpus corpus were prospectively labeled and acoustically analyzed. The main conclusions of the study are as follows: (1) Large-scale rhythmic information units in sentences include clauses (corresponding totonic phrases), sentences (including single sentences and complex sentences) and paragraphs. There is no significant difference between the perception level and the acoustic features of the single sentence and the complex sentence boundary, corresponding to the same prosodic unit. (2) Pitch cues for large-scale prosodic boundary classes are achieved by comparing the pitch of the syllables before and after the boundary, that is, the degree of pitch reset. Only a single acoustic clue at the first syllable or at the last syllable is not enough to distinguish the boundary level. (3) The phrasal phrases in the paragraphs and the complex sentences basically exist in a parallel mode, and there is no obvious and regular phenomenon that the overall intonation is declining. (4) The larger the information unit, the longer the silent segment and the greater the degree of freedom of change. In addition, there is a significant positive correlation between silence and pitch reset at the clause boundary.