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- W2002620567 abstract "In subject-independent acoustic-to-articulatory inversion, the articulatory kinematics of a test subject are estimated assuming that the training corpus does not include data from the test subject. The training corpus in subject-independent inversion (SII) is formed with acoustic and articulatory kinematics data and the acoustic mismatch between training and test subjects is then estimated by an acoustic normalization using acoustic data drawn from a large pool of speakers called generic acoustic space (GAS). In this work, we focus on improving the SII performance through better acoustic normalization and adaptation. We propose unsupervised and several supervised ways of clustering GAS for acoustic normalization. We perform an adaptation of acoustic models of GAS using the acoustic data of the training and test subjects in SII. It is found that SII performance significantly improves (∼25% relative on average) over the subject-dependent inversion when the acoustic clusters in GAS correspond to phonetic units (or states of 3-state phonetic HMMs) and when the acoustic model built on GAS is adapted to training and test subjects while optimizing the inversion criterion." @default.
- W2002620567 created "2016-06-24" @default.
- W2002620567 creator A5034455276 @default.
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- W2002620567 date "2015-02-01" @default.
- W2002620567 modified "2023-10-10" @default.
- W2002620567 title "Improved subject-independent acoustic-to-articulatory inversion" @default.
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- W2002620567 doi "https://doi.org/10.1016/j.specom.2014.07.005" @default.
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