Fast vocabulary independent method and apparatus for spotting words in speech
US6073095A · kind A · utility
49Cited by
9References
20Claims
0Family size
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Key dates
| Filing date | Oct 15, 1997 |
| Grant date | Jun 6, 2000 |
| Priority date | — |
| Expiry date | Oct 15, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L2015/088
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A fast vocabulary independent method for spotting words in speech utilizes a preprocessing step and a coarse-to-detailed search strategy for spotting a word/phone sequence in speech. The preprocessing includes a Viterbi-beam phone level decoding using a tree-based phone language model. The coarse search matches phone-ngrams to identify regions of speech as putative word hits, and the detailed search performs an acoustic match at the putative hits with a model of the given word included in the vocabulary of the recognizer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.