Techniques of performing microphone switching for a multi-microphone equipped device
US10321251B1 · kind B1 · utility
2Cited by
3References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 18, 2018 |
| Grant date | Jun 11, 2019 |
| Priority date | — |
| Expiry date | Jun 18, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2227/009
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Various embodiments describe techniques for switching microphones in a multiple microphone system. The techniques incorporate sampling audio signals from multiple microphones, determining a microphone that has the greatest incoming amplitude during the analysis window, and switching the microphone to that greatest amplitude microphone. The transition point for switching microphones may be determined when either the amplitude of the incoming signal is within an error bound of zero or at a “zero-crossing” in the input amplitude stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.