Yoon-Chul Kim1, Shrikanth S. Narayanan1,
Krishna S. Nayak1
1Ming Hsieh Department of Electrical
Engineering, University of Southern California, Los Angeles, CA, United
States
In
speech research using real-time MRI, the analysis of vocal tract dynamics is
performed retrospectively after acquiring data in real-time. A flexible
selection of temporal resolution is desirable because of natural variations
in speaking rate and variations in the speed of different articulators. In this
work, a golden ratio temporal view order was applied. Compared to a
traditional spiral acquisition, the proposed method can provide an improved
aliasing artifact reduction for static postures (e.g. pause, vowel sound) and
an improved temporal resolution for capturing the dynamics of rapid
articulator movement (e.g. consonant to vowel transition).