发明名称 |
Method for noise adaptation in automatic speech recognition using transformed matrices |
摘要 |
<p>The improved noise adaptation technique employs a linear or non-linear transformation to the set of Jacobian matrices corresponding to an initial noise condition. An alpha -adaptation parameter or artificial intelligence operation is employed in a linear or non-linear way to increase the adaptation bias added to the speech models. This corrects shortcomings of conventional Jacobian adaptation, which tend to underestimate the effect of noise. The improved adaptation technique is further enhanced by a reduced dimensionality, principal component analysis technique that reduces the computational burden, making the adaptation technique beneficial in embedded recognition systems. <IMAGE></p> |
申请公布号 |
EP1148471(A1) |
申请公布日期 |
2001.10.24 |
申请号 |
EP20010303537 |
申请日期 |
2001.04.18 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
CERISARA, CHRISTOPHE;RIGAZIO, LUCA;BOMAN, ROBERT;JUNQUA, JEAN-CLAUDE |
分类号 |
G10L15/00;G10L15/06;G10L15/20;(IPC1-7):G10L15/20 |
主分类号 |
G10L15/00 |
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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