Active noise reduction engine speed determining
US9729966B2 · kind B2 · utility
3Cited by
4References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 29, 2015 |
| Grant date | Aug 8, 2017 |
| Priority date | — |
| Expiry date | Dec 23, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K2210/1282
- 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.