Dynamic in-vehicle noise cancellation divergence control
US10672378B1 · kind B1 · utility
4Cited by
1References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 7, 2019 |
| Grant date | Jun 2, 2020 |
| Priority date | — |
| Expiry date | May 7, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K11/17879
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An active noise cancellation (ANC) system may include an adaptive filter divergence detector for detecting divergence of the one or more controllable filters as they adapt, based on dynamically adapted thresholds. Upon detection of a controllable filter divergence, the ANC system may be deactivated, or certain speakers may be muted. Alternatively, the ANC system may modify the diverged controllable filters to restore proper operation of the noise cancelling system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.