On the rhythm of infant- versus adult-directed speech in Australian English
On the rhythm of infant- versus adult-directed speech in Australian English
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DOI：
10.1121/1.4883479
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发表时间：
2014-07-01
影响因子：
2.4
通讯作者：
Todd, Neil P. McAngus
中科院分区：
文献类型：
--
作者：
Lee, Christopher S.;Kitamura, Christine;Todd, Neil P. McAngus
这一研究结果是对澳大利亚英语母亲对婴儿和对另一个成年人说话的语料库中婴儿指向语（IDS）和成人指向语（ADS）的节奏差异进行调查的结果。考虑到节奏线索对英语重音和分词的重要性，本研究的重点是IDS在多大程度上突出了这些线索。使用了两种分析方法：一种侧重于分段持续时间属性，使用各种持续时间度量；另一项研究关注的是由持续时间、强度、音高和频谱平衡决定的声乐/辅音片段的突出程度，使用的是来自听觉模型分析的单个测量方法和综合测量方法。IDS和ADS在单项测量上差异不大，但IDS的平均音高和音高变异性高于ADS，而IDS元音表现出更多的负谱倾斜。然而，基于模型的分析表明，在IDS中，元音/辅音段的突出性差异减少了，进一步的分析表明，音高对突出性的贡献很小。突出对比的减少可能是由于情绪调节对婴儿说话的重要性，并且可能表明婴儿依赖于重音和分词的分词线索。(C) 2014年美国声学学会。
The findings are reported of an investigation into rhythmic differences between infant-directed speech (IDS) and adult-directed speech (ADS) in a corpus of utterances from Australian English mothers speaking to their infants and to another adult. Given the importance of rhythmic cues to stress and word-segmentation in English, the investigation focused on the extent to which IDS makes such cues salient. Two methods of analysis were used: one focused on segmental durational properties, using a variety of durational measures; the other focused on the prominence of vocalic/sonorant segments, as determined by their duration, intensity, pitch, and spectral balance, using individual measures as well as composite measures of prominence derived from auditory-model analyses. There were few IDS/ADS differences/trends on the individual measures, though mean pitch and pitch variability were higher in IDS than ADS, while IDS vowels showed more negative spectral tilt. However, the model-based analyses suggested that differences in the prominence of vowels/sonorant segments were reduced in IDS, with further analysis suggesting that pitch contributed little to prominence. The reduction in prominence contrasts may be due to the importance of mood-regulation in speech to young infants, and may suggest that infants rely on segmental cues to stress and word-segmentation. (C) 2014 Acoustical Society of America.