ACOUSTIC PANEL SYSTEM CAPABLE OF PLANNING MAIN SOUND ABSORBING FREQUENCY ACCORDING TO THE TARGET FREQUENCY BAND

摘要

PURPOSE: An acoustic panel system is provided to embody NRC(Noise Reduction Coefficient) performance by embodying a resonator structure and a porous sound absorber structure simultaneously. ;CONSTITUTION: An acoustic panel system(100) comprises: an inorganic board(110) having a resonator(115) structure to control the diameter of a hollow by frequency bands; a perforated sheet(120) arranged on one side of the inorganic board and provided with plural minute perforations to control the diameter by frequency bands; and a porous sound absorbing material(130) arranged between the perforated sheet and the inorganic board to absorb the noise energy entered to the perforated sheet with resistance of the porous sound absorbing material.;COPYRIGHT KIPO 2011