Speaker and environment adaptation based on linear separation of variability sources
US6915259B2 · kind B2 · utility
66Cited by
8References
25Claims
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Key dates
| Filing date | May 24, 2001 |
| Grant date | Jul 5, 2005 |
| Priority date | — |
| Expiry date | Jul 11, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L21/0208
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.