At the babbling stage, the syllable does not have the temporal characteristics of adult syllables because of the infant's limited oro-motor skills. This research aims to further our knowledge of syllable duration and temporal variability and their evolution with age as an indicator of the development of articulatory skills. The possible impact of syllable position, as well as that of type of intrasyllabic associations and intersyllabic articulatory changes on these parameters has also been tested. Oral productions of 22 French infants were recorded monthly from 8 to 14 months. 11 261 Consonant-Vowel (CV) syllables were annotated and temporally analyzed. The mean duration varied according to syllable position, but not to the intrasyllabic or intersyllabic articulatory changes. Moreover, the syllable duration decreased significantly from the age of 10 months onwards, whereas the temporal variability remained the same.

中文翻译：

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咿呀学语中的音节时长变化：法国婴儿作品的纵向研究

在牙牙学语阶段，由于婴儿的口部运动技能有限，该音节不具备成人音节的时间特征。这项研究旨在进一步加深我们对音节持续时间和时间变异性及其随年龄的演变的了解，作为发音技能发展的指标。还测试了音节位置以及音节内关联类型和音节间发音变化对这些参数的可能影响。从 8 个月到 14 个月，每月记录 22 名法国婴儿的口语。对 11 261 个辅音元音 (CV) 音节进行了注释和时间分析。平均持续时间因音节位置而异，但与音节内或音节间发音变化无关。而且，