Speech processing apparatus and method using confidence scores
US7165031B2 · kind B2 · utility
9Cited by
7References
17Claims
0Family size
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Key dates
| Filing date | Nov 6, 2002 |
| Grant date | Jan 16, 2007 |
| Priority date | — |
| Expiry date | Mar 2, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L15/10
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A speech recognition method and apparatus is disclosed in which outputs a confidence score indicative of the posterior probability of an utterance being correctly matched to a word model. The confidence score for the matching of an utterance to a word model is determined directly from the generated values indicative of the goodness of match between the utterance and stored word models utilizing the following equation:where S(x|w) is the match score for the correlation between a signal x and word w and σ is an experimentally determined constant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.