Patent · US Active

Active noise reduction adaptive filter leakage adjusting

US8194873B2 · kind B2 · utility

38Cited by

18References

26Claims

0Family size

Inventors

Davis Y. Pan · Arlington, US
Christopher J. Cheng · Arlington, US
Eduardo T. Salvador · Cambridge, US

Key dates

Filing date	Jun 26, 2006
Grant date	Jun 5, 2012
Priority date	—
Expiry date	Aug 31, 2029

Classification

Technology area (CPC G)Physics
CPC primaryG10K11/17885
WIPO fieldOther consumer goods
WIPO sectorOther fields

Abstract

An active noise reduction system using adaptive filters. A method of operation the active noise reduction system includes smoothing a stream of leakage factors. The frequency of a noise reduction signal may be related to the engine speed of an engine associated with the system within which the active noise reduction system is operated. The engine speed signal may be a high latency signal and may be obtained by the active noise reduction system over audio entertainment circuitry.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.