A global noise protective solution, based on the idea of virtual acoustic corridors, dedicated to industrial areas, is investigated. Research studies on decentralized ANC system with several secondary sources and error sensors are performed in the KOMAG Institute of Mining Technology. The models of the electro-acoustic paths are obtained through dynamical systems identification. Experimental results from the proposed active noise reduction system are presented, based on recorded noise signals from the Rybnik Power Plant. Finally, effectiveness and usefulness of hearing protection of such a global system are verified.
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