Comparing events in word spotting
US8170873B1 · kind B1 · utility
3Cited by
22References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 22, 2004 |
| Grant date | May 1, 2012 |
| Priority date | — |
| Expiry date | Jan 14, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L2015/088
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An approach to comparing events in word spotting, such as comparing putative and reference instances of a keyword, makes use of a set of models of subword units. For each of two acoustic events and for each of a series of times in each of the events, a probability associated with each of the models of the set of subword units is computed. Then, a quantity characterizing a comparison of the two acoustic events, one occurring in each of the two acoustic signals, is computed using the computed probabilities associated with each of the models.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.