Vehicular active vibratory noise control apparatus

Details Vehicular active vibratory noise control apparatus Vehicular active vibratory noise control apparatus

2008-08-25

2011-10-11

Nguyen, Tuyen (Department: 2832)

Electrical audio signal processing systems and devices

Acoustical noise or sound cancellation

Within cabin or compartment of vehicle

Reexamination Certificate

active

08036396

ABSTRACT:
A vehicular active vibratory noise control apparatus includes an adaptive notch filter (second control signal generating unit) for generating a corrected error signal representative of a road noise only by removing the component of a rotational frequency (the component of an engine muffled sound) from an error signal, generates a first control signal from the corrected error signal and a reference signal, and reduces the component of the rotational frequency (engine muffled sound) at a position where a microphone is located (evaluating point).

REFERENCES:
patent: 5359662 (1994-10-01), Yuan et al.
patent: 5802184 (1998-09-01), Heath
patent: 7574006 (2009-08-01), Funayama et al.
patent: 2004/0258252 (2004-12-01), Inoue et al.
patent: 2000-280831 (2000-10-01), None

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