发明名称 |
Method for noise adaptation in automatic speech recognition using transformed matrices |
摘要 |
<p>A noise adaptation system and method provide for noise adaptation in a speech recognition system. The method includes the steps of generating a reference model based on a training speech signal, and compensating the reference model for additive noise in the cepstral domain. The reference model is also compensated for convolutional noise in the cepstral domain. In one embodiment, the convolutional noise is compensated for by estimating a convolutional bias between the reference model and a target speech signal. The estimated convolutional bias is transformed with a channel adaptation matrix, and the transformed convolutional bias is added to the reference model in the cepstral domain. <IMAGE></p> |
申请公布号 |
EP1178465(B1) |
申请公布日期 |
2005.03.23 |
申请号 |
EP20010306333 |
申请日期 |
2001.07.24 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
CERISARA, CHRISTOPHE;RIGAZIO, LUCA;BOMEN, ROBERT;JUNQUA, JEAN-CLAUDE |
分类号 |
G10L15/14;G10L15/20;G10L21/0216;(IPC1-7):G10L15/20 |
主分类号 |
G10L15/14 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|