Energy-efficient, accelerometer-based hotword detection to launch a voice-control system
US10347249B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 27, 2017 |
| Grant date | Jul 9, 2019 |
| Priority date | — |
| Expiry date | Jan 11, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L15/24
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The disclosed embodiments relate to the design of a system that uses an accelerometer in a mobile device to detect hotwords, which activate a voice interface to recognize subsequent voice input. During operation, the system gathers samples comprising readings from the accelerometer in the mobile device. Next, the system calculates features from the gathered samples. The system then classifies the calculated features using a classifier, which has been trained to detect hotwords based on calculated features. Finally, if the classifier detects one or more hotwords, the system causes the mobile device to launch a voice-control system that recognizes subsequent voice input received from an audio microphone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.