The role of sonority profile and order of place of articulation on gestural overlap in Georgian

Caroline Crouch, Argyro Katsika, Ioana Chitoran


Sonority sequencing principles can account for phonotactic processes across languages, but the articulatory correlates of sonority are not well established. This study examines the relationship between overlap and sonority shape for two-consonant onsets in Georgian via electromagnetic articulography. We cross three sonority shapes (rise, plateau, fall) with two orders of place of articulation (front-back, back-front), since the latter has been shown to affect overlap. The degree of plateau overlap and relative overlap for the consonant gestures are evaluated. Both sonority shape and order of place of articulation are found to affect gestural overlap. Importantly, in order to understand how Georgian organizes onsets of different sonority shapes we must look at both measures of overlap. The plateau overlap measure reveals that all Georgian clusters present a lag between achieved constrictions; we argue that this language-specific setting allows for a wider range of consonant sequences to be perceptible. In parallel, the overall overlap measure shows that sonority falls are more overlapped during the formation phase of the second consonant’s constriction, which presumably compensates for the later plateau lag and ensures tautosyllabic parsing of the clusters’ consonants in sonority falls. Finally, front-to-back clusters are less overlapped than back-to-front clusters across all sonority shapes.


 DOI: 10.21437/SpeechProsody.2020-42

Cite as: Crouch, C., Katsika, A., Chitoran, I. (2020) The role of sonority profile and order of place of articulation on gestural overlap in Georgian. Proc. 10th International Conference on Speech Prosody 2020, 205-209, DOI: 10.21437/SpeechProsody.2020-42.


@inproceedings{Crouch2020,
  author={Caroline Crouch and Argyro Katsika and Ioana Chitoran},
  title={{The role of sonority profile and order of place of articulation on gestural overlap in Georgian}},
  year=2020,
  booktitle={Proc. 10th International Conference on Speech Prosody 2020},
  pages={205--209},
  doi={10.21437/SpeechProsody.2020-42},
  url={http://dx.doi.org/10.21437/SpeechProsody.2020-42}
}