System and method for noise reduction having first and second adaptive filters responsive to a stored vector
US7099822B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 12, 2004 |
| Grant date | Aug 29, 2006 |
| Priority date | — |
| Expiry date | Nov 23, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L2021/02166
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system for microphone noise reduction includes first and second filter portions and a control processor adapted to adapt the first and second filter portions in response to a one of a plurality of stored vectors. Each stored vector is representative of acoustic transfer functions in accordance with a model of a vehicle and a respective position within the vehicle. A method for processing microphone signals includes selecting a vehicle model, selecting positions within the vehicle model, measuring acoustic response vectors at the positions, storing the response vectors, selecting one of the response vectors, and adapting first and second filter portions in accordance with the selected response vector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.