Speech recognition system accommodating different sources
US5572624A · kind A · utility
32Cited by
1References
9Claims
0Family size
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Inventor
Key dates
| Filing date | Jan 24, 1994 |
| Grant date | Nov 5, 1996 |
| Priority date | — |
| Expiry date | Jan 24, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F18/2132
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The speech recognition system disclosed herein obtains improved recognition accuracy by employing recognition models which are discriminatively trained from a data base comprising training data from different sources, e.g., both male and female voices. A linear discriminant analysis is performed on the training data using expanded matrices in which sources are identified or labelled. The linear discriminant analysis yields respective transforms for the different sources which however map the different sources onto a common vector space in which the vocabulary models are defined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.