Speech recognition using multiple language models
US8972260B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 19, 2012 |
| Grant date | Mar 3, 2015 |
| Priority date | — |
| Expiry date | Apr 25, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L15/30
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In accordance with one embodiment, a method of generating language models for speech recognition includes identifying a plurality of utterances in training data corresponding to speech, generating a frequency count of each utterance in the plurality of utterances, generating a high-frequency plurality of utterances from the plurality of utterances having a frequency that exceeds a predetermined frequency threshold, generating a low-frequency plurality of utterances from the plurality of utterances having a frequency that is below the predetermined frequency threshold, generating a grammar-based language model using the high-frequency plurality of utterances as training data, and generating a statistical language model using the low-frequency plurality of utterances as training data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.