Individual talker differences in voice-onset-time: contextual influences.
Individual talker differences in voice-onset-time: contextual influences.
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DOI：
10.1121/1.3106131
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发表时间：
2009-06
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影响因子：
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通讯作者：
Rachel M. Theodore;Joanne L. Miller;David DeSteno
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文献类型：
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作者：
Rachel M. Theodore;Joanne L. Miller;David DeSteno
先前的研究表明，说话者在语音相关属性上存在差异，包括单词起始停止辅音的语音开始时间（VOT）；一些说话者的投票时间明显比其他人短。先前的研究也表明，VOT受语境的影响，包括说话速度和发音位置。本文考察了这些语境对VOT的影响本身是否与说话人有关。许多表征的肺泡ti（实验1）或唇pi和腭ki（实验2）从说话者以不同的速率被引出。测量每个标记的VOT和元音持续时间（速率度量）。层次线性模型分析表明：(1)所有说话者的VOT都随说话率的降低而增加，但不同说话者的VOT增加幅度差异显著；因此，语速对VOT的影响是讲话者特有的；(2)在不同的发音位置上，语速对说话人的影响是稳定的；(3)在所有说话者中，唇部的vot都比腭部短，而且这种位移的大小在说话者之间没有显著的差异；因此，地点对VOT的影响并不是说话者特有的。这些发现对听者如何在言语感知中适应说话者VOT差异的影响进行了讨论。
Previous research indicates that talkers differ in phonetically relevant properties of speech, including voice-onset-time (VOT) in word-initial stop consonants; some talkers have characteristically shorter VOTs than others. Previous research also indicates that VOT is robustly affected by contextual influences, including speaking rate and place of articulation. This paper examines whether these contextual influences on VOT are themselves talker-specific. Many tokens of alveolar ti (experiment 1) or labial pi and velar ki (experiment 2) were elicited from talkers across a range of rates. VOT and vowel duration (a metric of rate) were measured for each token. Hierarchical linear modeling analyses showed that (1) VOT increased as rate decreased for all talkers, but the magnitude of the increase varied significantly across talkers; thus the effect of rate on VOT was talker-specific; (2) the talker-specific effect of rate was stable across a change in place of articulation; and (3) for all talkers VOTs were shorter for labial than velar stops, and there was no significant variability in the magnitude of this displacement across talkers; thus the effect of place on VOT was not talker-specific. The implications of these findings for how listeners might accommodate talker differences in VOT during speech perception are discussed.