Phrase boundary effects on the temporal kinematics of sequential tongue tip consonants |
| |
Authors: | Byrd Dani Lee Sungbok Campos-Astorkiza Rebeka |
| |
Institution: | Department of Linguistics, University of Southern California, 3601 Watt Way, GFS 301, Los Angeles, California 90089-1693, USA. dbyrd@usc.edu |
| |
Abstract: | This study evaluates the effects of phrase boundaries on the intra- and intergestural kinematic characteristics of blended gestures, i.e., overlapping gestures produced with a single articulator. The sequences examined are the juncture geminate d(#)d], the sequence d(#)z], and, for comparison, the singleton tongue tip gesture in d(#)b]. This allows the investigation of the process of gestural aggregation Munhall, K. G., and Lofqvist, A. (1992). "Gestural aggregation in speech: laryngeal gestures," J. Phonetics 20, 93-110] and the manner in which it is affected by prosodic structure. Juncture geminates are predicted to be affected by prosodic boundaries in the same way as other gestures; that is, they should display prosodic lengthening and lesser overlap across a boundary. Articulatory prosodic lengthening is also investigated using a signal alignment method of the functional data analysis framework Ramsay, J. O., and Silverman, B. W. (2005). Functional Data Analysis, 2nd ed. (Springer-Verlag, New York)]. This provides the ability to examine a time warping function that characterizes relative timing difference (i.e., lagging or advancing) of a test signal with respect to a given reference, thus offering a way of illuminating local nonlinear deformations at work in prosodic lengthening. These findings are discussed in light of the pi-gesture framework of Byrd and Saltzman (2003) "The elastic phrase: Modeling the dynamics of boundary-adjacent lengthening," J. Phonetics 31, 149-180]. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|