SOUND ABSORPTION STRUCTURE, SOUND ABSORPTION STRUCTURE GROUP, ACOUSTIC ROOM, AND NOISE REDUCING METHOD

摘要

PROBLEM TO BE SOLVED: To efficiently absorb sound by widening a frequency band of the sound to be absorbed, in a plate and/or film vibration-type sound absorption structure.;SOLUTION: In this sound absorption structure 1, a rubber sheet 20 is placed on a felt sheet 30; a supporting member 40 is fixed onto the rubber sheet 20; and a vibrator 10 is bonded to the supporting member 40 in such a manner as to face the rubber sheet 20 across the supporting member 40. Thus, a divided air space 50 is formed behind the vibrator 10 in such a manner as to be surrounded by the vibrator 10, the supporting member 40 and the rubber sheet 20. The sound absorption structure 1 is fixed to a boundary surface 2 of a room in such a manner that the felt sheet 30 is directed to the boundary surface 2.;COPYRIGHT: (C)2010,JPO&INPIT