Apparatus, system and/or method for acoustic road noise peak frequency cancellation
US11990112B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 21, 2022 |
| Grant date | May 21, 2024 |
| Priority date | — |
| Expiry date | Oct 21, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K2210/3055
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
In at least one embodiment, an active noise cancellation (ANC) system is provided. The ANC system includes at least one loudspeaker, at least one microphone, and a reference generator. The at least one loudspeaker projects anti-noise sound within a cabin of a vehicle based at least on an estimated reference signal and an anti-noise signal. The at least one microphone to provide a first error signal indicative of noise and the anti-noise sound within the cabin. The at least one filter controller programmed to receive the first error signal and the estimated reference signal; and to control at least one adaptive filter to generate the anti-noise signal based at least on the first error signal and the estimated reference signal. The reference generator is programmed to generate the estimated reference signal based at least on one of vehicle speed, temperature of a tire of the vehicle, or tire pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.