Vehicular active noise/vibration/sound control system, and...

Details Vehicular active noise/vibration/sound control system, and... Vehicular active noise/vibration/sound control system, and...

2011-01-25

2011-01-25

Chin, Vivian (Department: 2614)

Electrical audio signal processing systems and devices

Acoustical noise or sound cancellation

Within cabin or compartment of vehicle

C381S086000

Reexamination Certificate

active

07876910

ABSTRACT:
An active noise/vibration/sound control system for a vehicle has an ANC (active noise control apparatus), an AVC (active vibration control apparatus), and an ASC (active sound control apparatus). To prevent the ANC, the AVC, and the ASC from interfering with each other and hence to prevent vehicle cabin environment of vibrations, noise, and sound from being impaired, activation and inactivation of the ANC, the AVC, and the ASC are controlled or their control characteristics are controlled in relation to each other by a weighting variable calculator as a coordination controller, depending on an engine rotation frequency and a frequency change which are representative of a running state of the vehicle as detected by an engine rotation frequency detector and a frequency change detector that serve as a running state detector.

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