MIC audio noise filtering
US9432786B2 · kind B2 · utility
1Cited by
20References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 8, 2012 |
| Grant date | Aug 30, 2016 |
| Priority date | — |
| Expiry date | Jul 19, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2420/05
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
This document discusses, among other things, a MIC audio noise filtering system configured to detect MIC audio noise at a pole of a four-pole audio jack using first and second comparators. The MIC audio noise detection system can include first and second comparators configured to compare a value of the pole to respective first and second thresholds and to provide an output indicative of the comparisons and a detection circuit configured to count changes in the output over a first period of time and to detect MIC audio noise at the pole of the four-pole audio jack using the count.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.