Voice activity detection (VAD) for a coded speech bitstream without decoding
US9997172B2 · kind B2 · utility
1Cited by
9References
17Claims
0Family size
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Key dates
| Filing date | Dec 2, 2013 |
| Grant date | Jun 12, 2018 |
| Priority date | — |
| Expiry date | Dec 7, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L25/78
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system, method and computer program product are described for voice activity detection (VAD) within a digitally encoded bitstream. A parameter extraction module is configured to extract parameters from a sequence of coded frames from a digitally encoded bitstream containing speech. A VAD classifier is configured to operate with input of the digitally encoded bitstream to evaluate each coded frame based on bitstream coding parameter classification features to output a VAD decision indicative of whether or not speech is present in one or more of the coded frames.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.