Abstract

Ejective and implosive consonants involve rapid raising or lowering, respectively, of the larynx coordinated with an oral constriction formation and release. Techniques such as contour tracking and region-of-interest (ROI) direct image analysis are becoming established for examining supralaryngeal constriction formation in real-time MRI data, but quantification of larynx movement from dynamic vocal-tract magnetic resonance imaging has not been tackled. We will evaluate methods of indexing the movement of the larynx in fast real-time MRI data collected in the midsagittal plane. We analyze data from USC’s real-time MRI IPA database produced by several phoneticians and data from speakers of the Hausa language producing both ejectives and implosives. Kinematic profiles of the laryngeal movements are obtained by outlining the arytenoid structure and applying principal component analysis on the vocal-tract …

Date

2017

Authors

Miran Oh, Asterios Toutios, Dani Byrd, Louis Goldstein, Shrikanth S Narayanan

Journal

The Journal of the Acoustical Society of America

Volume

142

Issue

4_Supplement

Pages

2579-2579

Publisher

Acoustical Society of America