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Acoustic-Articulatory Modelling with the Trajectory HMM

IEEE Signal Processing Letters

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zhang-spl.pdf (109.1Kb)
Date
2008
Author
Zhang, Le
Renals, Steve
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Abstract
In this letter, we introduce an hidden Markov model (HMM)-based inversion system to recovery articulatory movements from speech acoustics. Trajectory HMMs are used as generative models for modelling articulatory data. Experiments on the MOCHA-TIMIT corpus indicate that the jointly trained acoustic-articulatory models are more accurate (lower RMS error) than the separately trained ones, and that trajectory HMM training results in greater accuracy compared with conventional maximum likelihood HMM training. Moreover, the system has the ability to synthesize articulatory movements directly from a textual representation.
URI
http://hdl.handle.net/1842/3899
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