Using Optical Flow Analysis on Ultrasound of the Tongue to Examine Phonological Relationships

Authors

  • Kathleen Currie Hall University of British Columbia
  • Hanna Smith University of British Columbia
  • Kevin McMullin University of Ottawa
  • Blake Allen University of British Columbia
  • Noriko Yamane University of British Columbia

Keywords:

ultrasons, échographie, flux optique, opposition, allophony, voyelles, ultrasound, optical flow, contrast, vowels

Abstract

This paper examines whether there are articulatory correlates of differing degrees of phonological contrast. English tense vowels are found to be produced with greater average magnitudes of movement when they occur in closed syllables, where they are generally contrastive with their lax vowel counterparts, than when they occur in open syllables, where they are less contrastive. Magnitude of tongue movement was determined by optical flow analysis of ultrasound videos of tongue movements; optical flow analysis allows for direct comparison of results across speakers and for the extraction of data from the entire timecourse of productions.

Published

2017-04-03

How to Cite

1.
Hall KC, Smith H, McMullin K, Allen B, Yamane N. Using Optical Flow Analysis on Ultrasound of the Tongue to Examine Phonological Relationships. Canadian Acoustics [Internet]. 2017Apr.3 [cited 2020Sep.25];45(1):15-24. Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/2740

Issue

Section

Article - Speech Sciences

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