Active noise reduction adaptive filter adaptation rate adjusting
US8306240B2 · kind B2 · utility
25Cited by
19References
9Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 20, 2008 |
| Grant date | Nov 6, 2012 |
| Priority date | — |
| Expiry date | Jan 21, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L21/0208
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A method for determining leakage factors or adaptation rates, or both, for adaptive filters in an active noise reduction system. The leakage factor or adaptation rate, or both, may vary depending on a parameter of an input reference signal. The parameter may include one or more of reference signal input frequency, rate of change of reference input signal frequency, if a predetermined triggering condition exits, or if a predetermined event has occurred.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.