发明授权
- 专利标题: Speaker and environment adaptation based on linear separation of variability sources
- 专利标题(中): 基于可变性来源线性分离的扬声器和环境适应
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申请号: US09864838申请日: 2001-05-24
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公开(公告)号: US06915259B2公开(公告)日: 2005-07-05
- 发明人: Luca Rigazio , Patrick Nguyen , David Kryze , Jean-Claude Junqua
- 申请人: Luca Rigazio , Patrick Nguyen , David Kryze , Jean-Claude Junqua
- 申请人地址: JP Osaka
- 专利权人: Matsushita Electric Industrial Co., Ltd.
- 当前专利权人: Matsushita Electric Industrial Co., Ltd.
- 当前专利权人地址: JP Osaka
- 代理机构: Harness, Dickey & Pierce, PLC
- 主分类号: G10L15/06
- IPC分类号: G10L15/06 ; G10L21/02
摘要:
Linear approximation of the background noise is applied after feature extraction and prior to speaker adaptation to allow the speaker adaptation system to adapt the speech models to the enrolling user without distortion from background noise. The linear approximation is applied in the feature domain, such as in the cepstral domain. Any adaptation technique that is commutative in the feature domain may be used.