Method and apparatus of a switched microphone interface circuit for voice energy detection
US10250996B1 · kind B1 · utility
2Cited by
2References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 6, 2017 |
| Grant date | Apr 2, 2019 |
| Priority date | — |
| Expiry date | Nov 6, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2499/11
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An acoustic energy detection circuit can include a microphone interface circuit configured for coupling to a microphone. The microphone interface circuit is configured to intermittently activate the microphone to detect acoustic energy and convert the acoustic energy to an electrical signal. The acoustic energy detection circuit also includes a comparator circuit for receiving the electrical signal and comparing the electrical signal with a threshold signal. The comparator circuit is configured to output an output signal to indicate detection of acoustic energy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.