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12/27/07 - USPTO Class 381 |  1 views | #20070297619 | Prev - Next | About this Page  381 rss/xml feed  monitor keywords

Active noise reduction engine speed determining

USPTO Application #: 20070297619
Title: Active noise reduction engine speed determining
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. (end of abstract)



Agent: Fish & Richardson PC - Minneapolis, MN, US
Inventor: Davis Pan
USPTO Applicaton #: 20070297619 - Class: 381 7111 (USPTO)

Active noise reduction engine speed determining description/claims


The Patent Description & Claims data below is from USPTO Patent Application 20070297619, Active noise reduction engine speed determining.

Brief Patent Description - Full Patent Description - Patent Application Claims
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Electrical audio signal processing systems and devices

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