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Parametric online - histogram normalization to the noise robust speech recognition
Parametric online - histogram normalization to the noise robust speech recognition
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机译:在线参数直方图归一化噪声鲁棒语音识别。
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摘要
A method for improving noise robustness in speech recognition, wherein a front-end is used for extracting speech feature from an input speech and for providing a plurality of scaled spectral coefficients. The histogram of the scaled spectral coefficients is normalized to the histogram of a training set using Gaussian approximations. The normalized spectral coefficients are then converted into a set of cepstrum coefficients by a decorrelation module and further subjected to ceptral domain feature-vector normalization.
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