Variable rate adaptive active noise cancellation
US9466282B2 · kind B2 · utility
1Cited by
2References
30Claims
0Family size
Assignee
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Key dates
| Filing date | May 18, 2015 |
| Grant date | Oct 11, 2016 |
| Priority date | — |
| Expiry date | Jun 12, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K2210/3053
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A method of audio signal processing includes determining a difference between a first set of filter parameters of a first input frame of an active noise cancellation (ANC) filter and a second set of filter parameters of a second input frame of the ANC filter. The method further includes selectively modifying a duty cycle of adaptive ANC processing associated with the ANC filter based on the difference between the first set of filter parameters and the second set of filter parameters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.