Chi-Min Yang

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In this paper a reference eigen-environment and speaker weighting (RESW) method is proposed for online HMM adaptation. RESW establishes multiple eigen-MLLR subspaces as the set of a priori knowledge according to certain affecting factors, such as noise type, SNR, male and female. It then projects an input test utterance simultaneously into the set of(More)
In this paper, a within-class feature normalization (WCFN) framework operating in transformed segment-level (instead of frame-level) super-vector space is proposed for robust speech recognition. In this framework, each segment hypothesis in a lattice is represented by a high dimensional super-vector and projected to a class-dependent lower-dimensional(More)
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