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Improved vocal tract reconstruction and modeling using an image super-resolution technique.


ABSTRACT: Magnetic resonance imaging has been widely used in speech production research. Often only one image stack (sagittal, axial, or coronal) is used for vocal tract modeling. As a result, complementary information from other available stacks is not utilized. To overcome this, a recently developed super-resolution technique was applied to integrate three orthogonal low-resolution stacks into one isotropic volume. The results on vowels show that the super-resolution volume produces better vocal tract visualization than any of the low-resolution stacks. Its derived area functions generally produce formant predictions closer to the ground truth, particularly for those formants sensitive to area perturbations at constrictions.

SUBMITTER: Zhou X 

PROVIDER: S-EPMC3656922 | biostudies-other | 2013 Jun

REPOSITORIES: biostudies-other

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