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All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year Sort by creator [A → Z]' creator [Z → A]' publishing year ↑ (asc)' publishing year ↓ (desc)' title [A → Z]' title [Z → A]' Simple Search Hits 1 – 3 of 3 1 Dynamic 3-D visualization of vocal tract shaping during speech Zhu, Yinghua; Kim, Yoon-Chul; Proctor, Michael I; Narayanan, Shrikanth S; Nayak, Krishna S. - : IEEE, 2013 Abstract: Noninvasive imaging is widely used in speech research as a means to investigate the shaping and dynamics of the vocal tract during speech production. 3-D dynamic MRI would be a major advance, as it would provide 3-D dynamic visualization of the entire vocal tract. We present a novel method for the creation of 3-D dynamic movies of vocal tract shaping based on the acquisition of 2-D dynamic data from parallel slices and temporal alignment of the image sequences using audio information. Multiple sagittal 2-D real-time movies with synchronized audio recordings are acquired for English vowel-consonant-vowel stimuli /ala/, /ara/, /asa/, and /a∫a/. Audio data are aligned using mel-frequency cepstral coefficients (MFCC) extracted from windowed intervals of the speech signal. Sagittal image sequences acquired from all slices are then aligned using dynamic time warping (DTW). The aligned image sequences enable dynamic 3-D visualization by creating synthesized movies of the moving airway in the coronal planes, visualizing desired tissue surfaces and tube-shaped vocal tract airway after manual segmentation of targeted articulators and smoothing. The resulting volumes allow for dynamic 3-D visualization of salient aspects of lingual articulation, including the formation of tongue grooves and sublingual cavities, with a temporal resolution of 78 ms. ; 11 page(s) Keyword: 080100 Artificial Intelligence and Image Processing; Articulation; dynamic time warping; real-time magnetic resonance imaging (MRI); retrospective gating; speech production; vocal tract shaping URL: http://hdl.handle.net/1959.14/230894 BASE Hide details 2 Improved imaging of lingual articulation using real-time multislice MRI Kim, Yoon-Chul; Proctor, Michael I; Narayanan, Shrikanth S. - : John Wiley & Sons, 2012 BASE Show details 3 Visualization of vocal tract shape using interleaved real-time MRI of multiple scan planes Kim, Yoon-Chul; Proctor, Michael I; Narayanan, Shrikanth S. - : International Speech Communication Association, 2011 BASE Show details

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