System and method for speech verification using out-of-vocabulary models
US6778959B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 18, 2000 |
| Grant date | Aug 17, 2004 |
| Priority date | — |
| Expiry date | Oct 11, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L15/08
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system and method for speech verification using out-of-vocabulary models includes a speech recognizer that has a model bank with system vocabulary word models, a garbage model, and one or more noise models. The model bank may reject an utterance or other sound as an invalid vocabulary word when the model bank identifies the utterance or other sound as corresponding to the garbage model or the noise models. Initial noise models may be selectively combined into a pre-determined number of final noise model clusters to effectively reduce the number of noise models that are utilized by the model bank of the speech recognizer to verify system vocabulary words.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.