Perceptual normalization for inter- and intratalker variation in Cantonese level tones.
Perceptual normalization for inter- and intratalker variation in Cantonese level tones.
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DOI：
10.1044/1092-4388(2003/034
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发表时间：
2003-04
期刊：
影响因子：
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通讯作者：
P. Wong;R. Diehl
中科院分区：
文献类型：
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作者：
P. Wong;R. Diehl
说话者之间和说话者内部声调产生的变化可能导致声调类别之间的声学重叠。本研究调查了这种类别重叠是否会引起感知歧义，如果是的话，听众是否能够使用上下文信息来减少这种歧义。在第一个实验中，以广东话为母语的听众被要求识别7个说话者发出的孤立的广东话声调。当物品的呈现被说话者阻挡而不是说话者之间的混合时，识别准确率显着提高。在第二个实验中，听者在语境（即前5个音节）改变了60种模式的情况下，识别6音节语义中性句子的最终（目标）语调。相同的目标音调根据上下文的不同而不同。在第三个实验中，将第二个实验的刺激句的语境部分分成两半，分别对它们的40种模式进行独立的改变。在识别目标语调时，听者更多地依赖于上下文后半部分的f0模式。这些结果与词汇语调在说话者之间和说话者内部的特征变化有关。
Inter- and intratalker variation in the production of lexical tones may contribute to acoustic overlap among tone categories. The present study investigated whether such category overlap gives rise to perceptual ambiguity and, if so, whether listeners are able to reduce this ambiguity using contextual information. In the first experiment, native Cantonese-speaking listeners were asked to identify isolated Cantonese level tones produced by 7 talkers. Identification accuracy was significantly higher when the presentation of items was blocked by talker rather mixed across talkers. In the second experiment, listeners identified the final (target) tone of 6-syllable semantically neutral sentences with f0 patterns of the context (i.e., the first 5 syllables) altered. The same target tone was identified differently depending on the context. In the third experiment, the context portions of stimulus sentences from the second experiment were divided into 2 halves, and their f0 patterns were altered independently. In identifying the target tone, listeners relied more heavily on the f0 pattern of the second (last) half of the context. These results are discussed in relation to characteristic inter- and intratalker variations of lexical tones.