Cepstrum third-order normalisation method for noisy speech recognition

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A new cepstrum normalisation method is proposed which can br: used to compensate for distortion caused by additive noise, Conventional methods only compensate for the deviation of the cepstral mean and/or variance. However, deviations of higher order moments also exist in noisy speech signals. The proposed method normalises the cepstrum up to its third-order moment, providing closer probability density functions between clean and noisy cepstra than is possible using conventional methods. From the speaker-independent isolated-word recognition experiments, it is shown that the proposed method gives improved performance compared with that of conventional methods, especially in heavy noise environments.
Publisher
IEE-INST ELEC ENG
Issue Date
1999-04
Language
English
Article Type
Article
Citation

ELECTRONICS LETTERS, v.35, no.7, pp.527 - 528

ISSN
0013-5194
URI
http://hdl.handle.net/10203/68939
Appears in Collection
EE-Journal Papers(저널논문)
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