Numerical Model of Coarticulation
Numerical Model of Coarticulation
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协同发音的数值模型
DOI：
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发表时间：
1967
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通讯作者：
S. Öhman
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作者：
S. Öhman
在元音-辅音-元音上下文中，瑞典牙音停顿的协同发音特性的基本特征可以用公式s(x; t) = v(x; l)+k (t)[c(x) - v(x; t)]wc(x)来描述，其中x表示嘴唇和声门之间的纵向距离，s（x; t）表示在元音-辅音元音发声过程中某个时刻t的声道形状。元音分量v（x; t）是元音/i/、/a/和/u/三个“极端”形状的线性组合，其权重随时间而变化。辅音由c(x)表示，c(x)是理想的目标形状，wc(x)是所谓的协发音函数。时变因子k(t)表示辅音手势的偏移程度。从一组瑞典元音-辅音元音发音的x射线电影中测量的声道形状与公式生成的形状比较良好。这一结果与我们之前关于协同发音的结论是一致的，即元音和辅音手势……
The essential features of the coarticulation properties of Swedish dental stops in vowel‐consonant‐vowel contexts can be described by the formula s(x; t) = v(x; l)+k (t)[c(x) − v(x; t)]wc(x), where x represents the longitudinal distance between lips and glottis and s(x; t) denotes the shape of the vocal tract at some instant of time, t, during the vowel‐consonant vowel utterance. The vowel component, v(x; t) is a linear combination of the three “extreme” shapes of the vowels /i/, /a/, and /u/ with weights that vary as functions of time. The consonant is represented by c(x), an ideal target shape, and wc(x), a so‐called coarticulation function. A time varying factor k(t) represents the degree of excursion of the consonantal gesture. Vocal tract shapes measured from x‐ray motion pictures of a set of Swedish vowel‐consonant vowel utterances compare well with shapes generated by the formula. This result is consistent with our earlier conclusions about coarticulation, viz., that the vowel and consonant gesture...