HAN Ji-qing, GAO Wen. Robust Speech Recognition Based on Discriminative Learning of Environmental Features[J]. Acta Electronica Sinica, 2001, 29(2): 196-198.
HAN Ji-qing, GAO Wen. Robust Speech Recognition Based on Discriminative Learning of Environmental Features[J]. Acta Electronica Sinica, 2001, 29(2): 196-198.DOI：
A discriminative learning method of environmental features is proposed for robust speech recognition
in which a simple classifier and the gradient descent algorithm are firstly used to iteratively learn the environmental features
and then the pure speech features are estimated from the observed speech features.Finally the estimations of the pure speech features are used in the back-end HMM classifier.Using the proposed method
a 33.3% reduction in word error rate is obtained relative to conventional HMM system for a speaker-independent
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