Dissertation Research: Electropalatographic Study of Coproduction in English Consonant Sequences (REU Supplement)

摘要本论文主要研究英语辅音的顺序产生。使用实时腭电图（EPG）系统获得的发音数据将用于检查舌-腭接触产生辅音簇的时间模式，目的是描述潜在发音手势的共同产生。同时收集的声学数据将被分析，以确定在EPG数据中证明的发音事件时间的频谱后果。具体而言，本论文将解决以下问题。1)语速对辅音顺序协同产生的影响是什么？2)当一个序列中辅音的数量不同时，辅音手势的协同产生会发生什么变化？3)舌-腭接触的空间和/或时间模式是否随辅音群的线性顺序而变化？也就是说，在辅音序列中，单词边界的不同位置的肺泡位置是否会影响手势之间的时间重叠？预计本研究将为进一步阐明语音产生的各种模型提供重要的经验数据，以更准确地反映发音协同产生和时间组织。

ABSTRACT This dissertation research will investigate the production of English consonants in sequence. Articulatory data acquired with the use of a real-time electropalatographic (EPG) system will be used to examine temporal patterns of tongue-palate contact in producing consonant clusters with the goal of describing coproduction of the underlying articulatory gestures. Acoustic data collected simultaneously will be analyzed to determine the spectral consequences of the timing of articulatory events as evidenced in the EPG data. Specifically, this dissertation will address the following questions. 1) What is the effect of speaking rate on the coproduction of consonants in sequence? 2) What changes occur in coproduction of consonantal gestures as the number of consonants in a sequence is varied? 3) Does the spatial and/or temporal pattern of tongue-palate contact vary as a function of the linear order of the consonants in the cluster; that is, does an alveolar different than a velar location of word boundaries in a consonant sequence affect the temporal overlap between the gestures? It is anticipated that this research will provide significant empirical data with which various models of speech production can be further explicated to more accurately mirror articulatory coproduction and temporal organization.