Oh Miran, Byrd Dani, Goldstein Louis, Narayanan Shrikanth S
Department of Linguistics, 118557 University of Southern California , Los Angeles, CA, USA.
Department of Electrical and Computer Engineering, 118557 University of Southern California , Los Angeles, CA, USA.
Phonetica. 2024 Oct 22;81(6):559-597. doi: 10.1515/phon-2023-0052. Print 2024 Dec 17.
The current project undertakes a kinematic examination of vertical larynx actions and intergestural timing stability within multi-gesture complex segments such as ejectives and implosives that may possess specific temporal goals critical to their articulatory realization. Using real-time MRI (rtMRI) speech production data from Hausa non-pulmonic and pulmonic consonants, this study illuminates speech timing between oral constriction and vertical larynx actions within segments and the role this intergestural timing plays in realizing phonological contrasts and processes in varying prosodic contexts. Results suggest that vertical larynx actions have greater magnitude in the production of ejectives compared to their pulmonic counterparts, but implosives and pulmonic consonants are differentiated not by vertical larynx magnitude but by the intergestural timing patterns between their oral and vertical larynx gestures. Moreover, intergestural timing stability/variability between oral and non-oral (vertical larynx) actions differ among ejectives, implosives, and pulmonic consonants, with ejectives having the most stable temporal lags, followed by implosives and pulmonic consonants, respectively. Lastly, the findings show how contrastive linguistic 'molecules' - here, segment-sized phonological complexes with multiple gestures - interact with phrasal context in speech in such a way that it variably shapes temporal organization between participating gestures as well as respecting stability in relative timing between such gestures comprising a segment.
当前项目对垂直喉部动作以及多手势复杂音段（如可能具有对其发音实现至关重要的特定时间目标的塞音和内爆音）内的手势间时间稳定性进行了运动学检查。本研究使用来自豪萨语非肺音和肺音辅音的实时磁共振成像（rtMRI）语音产生数据，阐明了音段内口腔收缩与垂直喉部动作之间的语音时间，以及这种手势间时间在不同韵律语境中实现音位对比和过程所起的作用。结果表明，与肺音对应音相比，垂直喉部动作在塞音产生过程中的幅度更大，但内爆音和肺音辅音的区别不在于垂直喉部幅度，而在于其口腔和垂直喉部手势之间的手势间时间模式。此外，塞音、内爆音和肺音辅音在口腔与非口腔（垂直喉部）动作之间的手势间时间稳定性/变异性存在差异，塞音的时间滞后最稳定，其次分别是内爆音和肺音辅音。最后，研究结果表明，对比性语言“分子”——这里指具有多个手势的音段大小的音位复合体——在语音中与短语语境相互作用，其方式是可变地塑造参与手势之间的时间组织，同时保持构成一个音段的此类手势之间相对时间的稳定性。
