Active noise reduction adaptive filter leakage adjusting
US8204242B2 · kind B2 · utility
19Cited by
18References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 29, 2008 |
| Grant date | Jun 19, 2012 |
| Priority date | — |
| Expiry date | Feb 17, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K2210/3028
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An active noise reduction system using adaptive filters. A method of operation the active noise reduction system includes smoothing a stream of leakage factors. The frequency of a noise reduction signal may be related to the engine speed of an engine associated with the system within which the active noise reduction system is operated. The engine speed signal may be a high latency signal and may be obtained by the active noise reduction system over audio entertainment circuitry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.