斜率相关参数对双音节阳平词的重音感知的影响

Effects of pitch-slope-related parameters on stress perception of Tone 2+Tone 2 disyllabic words in Mandarin

传统的基频和时长等声学参数凸显阳平音节的重音的作用有限,因此该文具体考察了双音节阳平词的词重音的声学关联物。通过对6 000句语料中的1 282个双音节阳平词进行重音标注和声学分析,发现双音节阳平词的词重音表现出特殊的声学关联物:两音节的音高升幅差、音高上升部分时长差和斜率差这3个斜率相关参数。主要体现在:3个斜率相关参数与双音节阳平词的重音类别有较高的相关性,它们均能够为区分前重词和后重词提供线索;在不同的韵律边界下,斜率相关参数对词重音的影响不同;3个参数与重音类别存在一定的对应关系。

This paper focuses on the effects of the sound parameters related to pitch slope on stress perception of Tone 2＋Tone 2 disyllabic words.The acoustic parameters of 1 282 Tone 2＋Tone 2 disyllabic words taken from a 6 000 sentence stress-labeled corpus are analyzed to identify the F0 changes,the duration differences and the pitch slope differences of the tone-nucleus part between the syllables of disyllabic words,which are shown to be important acoustic correlates of stress perception.These three parameters,especially the F0 changes,play crucial roles in discriminating between initial-syllable-stressed and final-syllable-stressed words.These parameters show different effects when the boundary levels differ,with the dividing line further clarified for different boundary levels.