| 发明名称 | MIC audio noise filtering | ||
| 摘要 | 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. | ||
| 申请公布号 | US9432786(B2) | 申请公布日期 | 2016.08.30 |
| 申请号 | US201213569944 | 申请日期 | 2012.08.08 |
| 申请人 | Fairchild Semiconductor Corporation | 发明人 | Prentice Seth M.;Barden Shawn |
| 分类号 | H04B15/00;H04R29/00;G01R29/26;G01R27/02 | 主分类号 | H04B15/00 |
| 代理机构 | Schwegman Lundberg & Woessner, P.A. | 代理人 | Schwegman Lundberg & Woessner, P.A. |
| 主权项 | 1. A MIC audio noise filtering circuit, comprising: first and second comparators configured to compare a value of a pole of a four-pole audio jack to respective first and second thresholds and to provide an output indicative of the comparisons; and a detection circuit configured to count a number of 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. | ||
| 地址 | San Jose CA US | ||