Discriminative training of document transcription system
US9190050B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 3, 2014 |
| Grant date | Nov 17, 2015 |
| Priority date | — |
| Expiry date | Apr 3, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L2015/0633
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system is provided for training an acoustic model for use in speech recognition. In particular, such a system may be used to perform training based on a spoken audio stream and a non-literal transcript of the spoken audio stream. Such a system may identify text in the non-literal transcript which represents concepts having multiple spoken forms. The system may attempt to identify the actual spoken form in the audio stream which produced the corresponding text in the non-literal transcript, and thereby produce a revised transcript which more accurately represents the spoken audio stream. The revised, and more accurate, transcript may be used to train the acoustic model using discriminative training techniques, thereby producing a better acoustic model than that which would be produced using conventional techniques, which perform training based directly on the original non-literal transcript.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.