Active noise reduction system
US8379879B2 · kind B2 · utility
1Cited by
7References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 21, 2010 |
| Grant date | Feb 19, 2013 |
| Priority date | — |
| Expiry date | Mar 26, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R3/007
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An active noise reduction system is provided for receiving an audio input signal and a noise interference signal and calculating an audio broadcasting signal according to a Feedback Filtered-X Least-Mean-Square (FFXLMS) algorithm, wherein the FFXLMS algorithm optimizes a (convergence factor) μ so as to decrease the numbers of divisions operated by the active noise reduction system and increase the operation speed of the active noise reduction system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.