Byrd Dani, Lee Sungbok, Riggs Daylen, Adams Jason
Department of Linguistics, USC College, Los Angeles, California 90089-1693, USA.
J Acoust Soc Am. 2005 Dec;118(6):3860-73. doi: 10.1121/1.2130950.
The complexities of how prosodic structure, both at the phrasal and syllable levels, shapes speech production have begun to be illuminated through studies of articulatory behavior. The present study contributes to an understanding of prosodic signatures on articulation by examining the joint effects of phrasal and syllable position on the production of consonants. Articulatory kinematic data were collected for five subjects using electromagnetic articulography (EMA) to record target consonants (labial, labiodental, and tongue tip), located in (1) either syllable final or initial position and (2) either at a phrase edge or phrase medially. Spatial and temporal characteristics of the consonantal constriction formation and release were determined based on kinematic landmarks in the articulator velocity profiles. The results indicate that syllable and phrasal position consistently affect the movement duration; however, effects on displacement were more variable. For most subjects, the boundary-adjacent portions of the movement (constriction release for a preboundary coda and constriction formation for a postboundary onset) are not differentially affected in terms of phrasal lengthening-both lengthen comparably.
通过对发音行为的研究，短语和音节层面的韵律结构如何塑造言语产生的复杂性已开始得到阐明。本研究通过考察短语和音节位置对辅音产生的联合效应，有助于理解韵律特征在发音方面的作用。使用电磁关节造影术（EMA）为五名受试者收集发音运动学数据，以记录位于（1）音节末尾或开头位置，以及（2）短语边缘或短语中间位置的目标辅音（唇音、唇齿音和舌尖音）。基于发音器速度剖面中的运动学标志，确定辅音收缩形成和释放的空间和时间特征。结果表明，音节和短语位置始终会影响运动持续时间；然而，对位移的影响则更具变异性。对于大多数受试者而言，运动中与边界相邻的部分（边界前尾音的收缩释放和边界后起首音的收缩形成）在短语延长方面没有受到不同影响——两者延长程度相当。
