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A Study of Sub-band Feature Statistics Compensation Techniques Based on a Discrete Wavelet Transform for Robust Speech Recognition ICME'09 Proceedings of the 2009 IEEE international conference on Multimedia and ExpoPages 586-589Presenter Chia-Cheng Chen

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HH(Z) HL(Z): GH(Z) GL(Z):

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0 1DWT (down-sampling)(Cont.)AURORA-2 (SNR)(subway)

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AURORA-2(subway)(babble)(car)(exhibition)(restaurant)(street)(airport)(train station)(Cont.)(Cont.)

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SB-MVN(1,2) SB-HEQ (1,2) SB-MVN(1,2,3,4) SB-HEQ (1,2,3,4)