Method and apparatus for improving performance of digital microelectromechanical systems microphones
US9716933B2 · kind B2 · utility
4Cited by
4References
23Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 22, 2015 |
| Grant date | Jul 25, 2017 |
| Priority date | — |
| Expiry date | Nov 13, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2201/003
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A microphone device comprising a microelectromechanical systems (MEMS) acoustic sensors, an automatic gain compensation (AGC) component, and a direct current (DC) offset cancellation component is described. An microphone device can be configured for AGC of an analog gain stage or a digital gain stage associated with the MEMS acoustic sensor. Provided implementations can also be configured to compensate DC offset resulting from adjustment of the analog provided by the AGC component. Additional embodiments of the subject disclosure can provide digital frequency equalization and/or linearization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.