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- W1992012199 abstract "The noise usually produces a non-linear distortion of the feature space considered for Automatic Speech Recognition. This distortion causes a mismatch between the training and recognition conditions which significantly degrades the performance of speech recognizers. In this contribution we analyze the effect of the additive noise over cepstral based representations and we compare several approaches to compensate this effect. We discuss the importance of the non-linearities introduced by the noise and we propose a method (based on the histogram equalization technique) specifically oriented to the compensation of the non-linear transformation caused by the additive noise. The proposed method has been evaluated using the AURORA-2 database and task. The recognition results show significant improvements with respect to other compensation methods reported in the bibliography and reveals the importance of the non-linear effects of the noise and the utility of the proposed method." @default.
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- W1992012199 date "2002-05-01" @default.
- W1992012199 modified "2023-10-01" @default.
- W1992012199 title "Non-linear transformations of the feature space for robust Speech Recognition" @default.
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- W1992012199 doi "https://doi.org/10.1109/icassp.2002.5743739" @default.
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