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提出了一种通过语句中声调音域低音点和次低音点求出语调短语低音线的方法,并以低音线为基准,考察从大规模言语语料库中随机抽取的汉语自然语句的语调特征。研究结果表明,与已有的汉语句末语调理论不同,汉语同样具有各种语言中普遍存在的音高下倾和重置的语调特征。低音线的下倾和重置可以出现在音步、语调短语和语句等不同的韵律单元中,表现最明显的是在语调短语这一级。实验结果支持汉语语调双线模型中高音线和低音线语言学功能不同的观点。
A method to find the bass line of the phonetic phrase through the bass point and the sub-bass point of the tonal range of the sentence is proposed. Based on the bass line, the intonational characteristics of Chinese natural sentences extracted from the large-scale speech corpus are investigated. The research results show that, unlike the existing morpheme theory of Chinese sentences, Chinese also has the tonal features of declination and reset of ubiquitous pitch in various languages. The descent and reset of the bass line can occur in different prosodic elements such as notes, intonation phrases, and sentences, most notably at the intonation phrase level. The experimental results support the different perspectives of the linguistic functions of the bass line and the bass line in the two-line model of Chinese intonation.