Maximum likelihood polynomial regression for robust speech recognition |
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Authors: | L Yong WU Zhenyang |
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Affiliation: | L Yong WU Zhenyang (School of Information Science and Engineering,Southeast University Nanjing 210096) |
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Abstract: | The linear hypothesis is the main disadvantage of maximum likelihood linear regression (MLLR).This paper applies the polynomial regression method to model adaptation and establishes a nonlinear model adaptation algorithm using maximum likelihood polynomial regression(MLPR)for robust speech recognition.In this algorithm,the nonlinear relationship between training and testing Gaussian means in every Mel channel is approximated by a set of polynomials and the polynomial coefficients are estimated from adaptati... |
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Keywords: | MLLR |
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