ACTIVE SOUNDPROOFING SYSTEM AND ACTIVE SOUNDPROOFING BARRIER USING THE SYSTEM

摘要

PURPOSE: An active soundproofing system and active soundproofing walls thereof are provided to obtain economic effect by adaptively changing the radiation direction of the control sound source as the change of a noise control region due to the change of surrounding environment or noise surroundings. CONSTITUTION: An active soundproofing system comprises a speaker array, at least one noise measurement unit(20), at least one error measurement unit(30) and a noise control part(40). A plurality of speakers(10) are arranged in the speaker array. The noise control part generates a control sound source damping a noise based on a signal inputted from the noise measurement unit and the error measurement unit. The noise control part adjusts the phase of the control sound source. The control sound sources radiated through the speakers focus on a noise control region.