Keyword spotting using a phoneme-sequence index
US8311828B2 · kind B2 · utility
9Cited by
13References
4Claims
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Key dates
| Filing date | Aug 27, 2008 |
| Grant date | Nov 13, 2012 |
| Priority date | — |
| Expiry date | Aug 15, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L2015/088
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In some aspects, a wordspotter is used to locate occurrences in an audio corpus of each of a set of predetermined subword units, which may be phoneme sequences. To locate a query (e.g., a keyword or phrase) in the audio corpus, constituent subword units in the query are indentified and then locations of those subwords are determined based on the locations of those subword units determined earlier by the wordspotter, for example, using a pre-built inverted index that maps subword units to their locations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.