Active noise control using a single sensor input

Details Active noise control using a single sensor input Active noise control using a single sensor input

2005-07-12

2005-07-12

Mei, Xu (Department: 2644)

Electrical audio signal processing systems and devices

Acoustical noise or sound cancellation

Within cabin or compartment of vehicle

C381S086000

Reexamination Certificate

active

06917687

ABSTRACT:
An active noise control system (20) includes a controller (34) that receives a signal from a single pressure sensor (36). The controller (34) estimates an engine speed of an engine (30) and a throttle position of a throttle valve associated with an air intake manifold (32). The controller (34) generates a noise control signal that drives a speaker (38), which responsively generates a noise attenuation signal. The disclosed embodiment may be used in an after-market product as it requires minimal interfacing with other vehicle electronics.

REFERENCES:
patent: 5485523 (1996-01-01), Tamamura et al.
patent: 5850458 (1998-12-01), Tomisawa et al.
patent: 6688422 (2004-02-01), Fuesser et al.
patent: 2002/0038647 (2002-04-01), Tashiro et al.

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