ACTIVE NOISE CONTROL APPARATUS FOR A VESSEL

摘要

The present invention relates to an active noise control device for a vessel, which removes restriction on an installation space for a sound absorber and optimally reduces noise by treating an exhaust sound of a generator, which is generated in an engine room, in an active noise control method. The active noise control device for a vessel includes: a sound absorber reducing a high frequency area of the exhaust sound by being installed in an exhaust pipe of the generator; a first noise control unit setting a first noise signal and a first reference signal by measuring the noise at a front end and a rear end of the sound absorber, generating an antiphase noise signal to control the generated noise by applying the first noise signal and the first reference signal to filtered-x least mean square (FXLMS) algorithm, and primarily controlling the exhaust noise of the exhaust pipe; and a second noise control unit setting a second noise signal and a second reference signal by measuring the noise at the end of the exhaust pipe of the generator and noise passing through the silencer, generating the antiphase noise signal to control the generated noise by applying the second noise signal and the second reference signal to the FXLMS algorithm, and secondarily controlling the exhaust noise of the exhaust pipe.