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- W2364496414 abstract "In this paper,a new feature normalization approach based on double Gaussian mixture model is proposed.Since speech features in noisy environments usually follow bi- modal distributions,to fully utilize this characteristic we represent the cumulative density function(CDF)of the features with a more delicate Gaussian mixture model.Finally,fea- ture normalization process is performed according to the estimated CDF to improve speech recognition performance.Experimental results on Aurora 2 and Aurora 3 tasks show that the performance of our method is much better than those of the conventional cepstral mean nor- malization(CMN)and cepstral mean and variance normalization(CMVN)methods,and is comparable to that of the histogram equalization method,which is a non-parametric method." @default.
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- W2364496414 date "2006-01-01" @default.
- W2364496414 modified "2023-09-25" @default.
- W2364496414 title "Double Gaussian GMM Based Feature Normalization and Its Application in Speech Recognition" @default.
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