Speech intensifying-characteristic weighing-logrithmic spectrum addition method for anti-noise speech recognization
Title：
Speech intensifying-characteristic weighing-logrithmic spectrum addition method for anti-noise speech recognization
Application Number：
 02124144
Application Date：
 2002/07/12
Announcement Date：
 2003/02/19
Pub. Date：
Publication Number：
 1397929
Announcement Number：
 1162838
Grant Date：
 2004-8-18
Granted Pub. Date：
 2004-8-18
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 G10L 15/00, G10L 15/20
Applicant(s)：
 Tsinghua Univ
Inventor(s)：
 Cao Zhigang, Xu Tao
Key Words：
 Speech intensifying-characteristic weighing-logrithmic spectrum addition, speech recognization
Abstract：
 A "speech intensifying (MMSE)-feature weighting (FW)-logrithmic spectrum addition (LA)" method for anti-interference speech recognition features that according to the speech features in short time, the local S/N ratio is extracted, the confidence of the feature, that is weight, is estimated, and the recognition algorithm is such modified that the weight information is used. Its advantages are high S/N ratio and high recognition percentage up to 80% in strong noise condition.
Claim：
Priority：
PCT：
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