Adaptive noise cancelling system for automotive hands-free telecommunications
US12354588B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 27, 2021 |
| Grant date | Jul 8, 2025 |
| Priority date | — |
| Expiry date | Jan 26, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2499/13
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An adaptive noise cancelling system utilizing a plurality of multi-axis accelerometers and a plurality of microphones, wherein the plurality of multi-axis accelerometers and the plurality microphones may be used in combination to pick up vibrations on a chassis of a vehicle. The accelerometers may be positioned at point near the suspension knuckles or joints of the vehicle, and the microphones may be positioned near the headrest and sun visor of the vehicle. The adaptive noise cancelling system may use an adaptive algorithm to derive one or more filter weights that model a transfer function between the vibrations on the chassis of the vehicle to an acoustic pressure at the plurality of microphones location.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.