Phonetic variation in English infant-directed speech: A large-scale corpus analysis
Phonetic variation in English infant-directed speech: A large-scale corpus analysis
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DOI：
10.1016/j.wocn.2023.101267
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发表时间：
2023-09-01
影响因子：
1.9
通讯作者：
Sundara，Megha
中科院分区：
文献类型：
--
作者：
Khlystova，Ekaterina A.;Chong，Adam J.;Sundara，Megha
学习语音类别是语言习得的核心，但我们对学习者输入的语音变异程度知之甚少。在这项研究中，我们语音注释冠状段（/t/，/d/，/s/，/z/，和/n/）的语料库中的自然美国英语婴儿导向语音（IDS）。我们没有发现证据表明，IDS是一贯更规范的比成人导向的讲话（ADS），挑战IDS作为一个学习寄存器的概念。虽然IDS总体上并不比ADS更规范，但规范形式仍然是IDS中除/t/之外的所有段中最常见的形式。我们还考虑了婴儿如何超越识别规范形式的任务，他们如何学习集群的音位变体;为此，我们量化的语音环境的差异的问题。最后，我们研究了一个案例，其中绝大多数的实例是不规范的-词尾和d-并证明了形态条件后缀比其他词尾段更规范。该语料库是理解婴儿如何学习从他们的输入中对声音进行分类的重要一步，并将成为未来语言学习的社会语言学，计算和理论建模的宝贵工具。
Learning sound categories is central to language acquisition – but we know little about the extent of phonetic variability in the learner’s input. In this study, we phonetically annotated coronal segments (/t/, /d/, /s/, /z/, and /n/) in a corpus of naturalistic American English infant-directed speech (IDS). We did not find evidence that IDS is consistently more canonical than adult-directed speech (ADS), challenging the notion of IDS as a learning register. While IDS is not more canonical than ADS overall, the canonical form was nonetheless the most frequent form in IDS for all segments except /t/. We also considered how infants may move beyond the task of identifying the canonical form to how they may learn to cluster allophones; for this purpose, we quantified the dissimilarity in the phonological environments of the variants in question. Lastly, we investigated a case in which the overwhelming majority of instantiations werenotcanonical – word-finaltandd –and demonstrated that morphologically-conditioned suffixes were more canonical than other word final segments. This corpus is a vital step towards understanding how infants can learn to categorize sounds from their input and will be an invaluable tool for future sociolinguistic, computational and theoretical modeling of language learning.