Publications by authors named "Miran Oh"
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.
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- Real-time magnetic resonance imaging (RT-MRI) is enhancing research in speech science, linguistics, and speech technology, but access to such data is limited.
- Existing raw multi-coil RT-MRI datasets for speech production are lacking, hindering research advancements like dynamic image reconstruction and feature extraction.
- The provided dataset includes 2D RT-MRI videos, synchronized audio from 75 participants, and additional 3D and anatomical MRI scans, making it a valuable resource for advancing speech research.
Article Synopsis
- The study explores how certain linguistic elements, particularly in Korean, gain prominence through focus, which highlights important information when speaking.
- It examines how acoustic features like duration and pitch are influenced by tense and lax consonants during corrective focus tasks, finding that these effects vary based on gestural structures.
- The results suggest that focus gestures operate at the syllable level (CVC) and imply interactions between different prosodic elements, supporting the idea that focus modulates the timing and characteristics of these gestures.
Real-time magnetic resonance imaging (MRI) speech production data have expanded the understanding of vocal tract actions. This letter presents an Automatic Centroid Tracking tool, ACT, which obtains both spatial and temporal information characterizing multi-directional articulatory movement. ACT auto-segments an articulatory object composed of connected pixels in a real-time MRI video, by finding its intensity centroids over time and returns kinematic profiles including direction and magnitude information of the object.
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