Wakeword detection using multi-word model
US11308939B1 · kind B1 · utility
6Cited by
10References
19Claims
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Key dates
| Filing date | Sep 25, 2018 |
| Grant date | Apr 19, 2022 |
| Priority date | — |
| Expiry date | Nov 14, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L2015/223
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system and method performs wakeword detection and automatic speech recognition using the same acoustic model. A mapping engine maps phones/senones output by the acoustic model to phones/senones corresponding to the wakeword. A hidden Markov model (HMM) may determine that the wakeword is present in audio data; the HMM may have multiple paths for multiple wakewords or may have multiple models. Once the wakeword is detected, ASR is performed using the acoustic model.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.