Digital microphone noise attenuation
US10559293B2 · kind B2 · utility
1Cited by
8References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 7, 2018 |
| Grant date | Feb 11, 2020 |
| Priority date | — |
| Expiry date | Sep 7, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K2210/3028
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A digital microphone device includes circuitry that can reduce the risk of noise caused due to an idle tone frequency component in a digital signal output by the digital microphone device. In stereo mode and other applications where interference occurs between two or more such microphones, each microphone device includes a digital output having a corresponding idle tone frequency, one of which is offset to shift noise components outside of a desired frequency range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.