Noise control system

Details Noise control system Noise control system

G - Physics

10

K

G10K 11/16 (2006.01) F01N 1/06 (2006.01) G10K 11/178 (2006.01)

Patent

CA 2094984

57,205 ABSTRACT OF THE: DISCLOSURE An adaptive noise control system comprises a reference microphone (12) (Fig. 2) for generating a reference signal (x(t)) that is correlated with noise emanating from a primary noise source (10), secondary loud speaker sources (S1, S2, ... SN) for generating a plurality of secondary sound waves, microphones (e1, e2, ... eM) for detecting a plurality of far-field sound waves in a far-field of the primary noise source and generating a plurality of error signals (e1(t), e2(t), ... eM(t)) each of which is indicative of the power of a corresponding far-field sound wave, and an adaptive controller (14) for controlling the secondary sources in accordance with the reference signal and the error signals so as to minimize the power in the far-field sound waves.

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