发明名称 |
ON-LINE PARAMETRIC HISTOGRAM NORMALIZATION FOR NOISE ROBUST SPEECH RECOGNITION |
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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申请公布号 |
WO03094154(A1) |
申请公布日期 |
2003.11.13 |
申请号 |
WO2003IB01621 |
申请日期 |
2003.04.28 |
申请人 |
NOKIA CORPORATION;NOKIA INC. |
发明人 |
HAVERINEN, HEMMO;KISS, IMRE |
分类号 |
G10L15/02;G10L15/20;(IPC1-7):G10L19/14 |
主分类号 |
G10L15/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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