Low power audio trigger via intermittent sampling
US9270801B2 · kind B2 · utility
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2References
21Claims
0Family size
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Key dates
| Filing date | Mar 15, 2013 |
| Grant date | Feb 23, 2016 |
| Priority date | — |
| Expiry date | Feb 5, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/70
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Systems and methods may provide for using an audio front end of a mobile device to sampled audio from an audio signal during a first portion of a periodic detection window, and reducing a power consumption of one or more components of the audio front end during a second portion of the periodic detection window. Additionally, a determination may be made as to whether voice activity is present in the audio signal based at least in part on the sampled audio. In one example, the length of the first portion and the length of the second portion are defined by a duty cycle of the periodic detection window.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.