Sources of Tonal Variations in Connected Speech
连续语流中声调变异的来源
Yi Xu 许毅

Abstract 摘要
This paper discuss various sources of tonal variations in connected speech. It is argued that these sources are better understood when they are viewed as either voluntary or involuntary. Voluntary sources are those stemming from linguistic/paralinguistic demands, and involuntary sources from articulatory constraints. Linguistic/paralinguistic demands represent various communicative functions on the one hand, but are associated with articulation-specific pitch targets and pitch ranges on the other. These pitch targets and pitch ranges are what speakers actually intend to implement in their speech; but such implementation is constrained by the limitations of the articulators that actually produce the fundamental frequency of voice. Observed variations in F0 contours in connected speech thus reflect different levels of linguistic/paralinguistic demands as well as their interaction with various articulatory constraints.

本文讨论影响连续语流中声调变异的各种因素，并试图论证，要理解这些因素最好把它们分为主观和客观因素。主观因素来自于语言功能，客观因素来自于发音器官的局限。语言功能一方面对应于各种交际需求，一方面又跟具体的音高目标和调域相对应。这些音高目标和调域时说话人力图实现的直接目标，但是他们的努力总是受到发音器官的种种局限。因此，我们在连续语流里观察到的基频曲线反映的是不同层次的语言功能跟各种发音局限相互作用的结果。