Power-efficient voice activation
US9142215B2 · kind B2 · utility
15Cited by
5References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 15, 2012 |
| Grant date | Sep 22, 2015 |
| Priority date | — |
| Expiry date | Feb 8, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L2015/088
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A voice activation system is provided. The voice activation system includes a first stage configured to output a first activation signal if at least one energy characteristic of a received audio signal satisfies at least one threshold and a second stage configured to transition from a first state to a second state in response to the first activation signal and, when in the second state, to output a second activation signal if at least a portion of a profile of the audio signal substantially matches at least one predetermined profile.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.