| 摘要 |
NOISE DAMPER Noise dampers of sound absorbent material are inserted on the metal grid beams in a suspended ceiling. Hangers, embedded in a structural ceiling, that support the beams, are insulated from the beams by the noise dampers. Sound vibrations generated in the structural ceiling, which is often a floor, are not transmitted through the hangers, to the suspended ceiling, or to the room, below, but are absorbed in the dampers before reaching the grid beams. 65573451_I:TCW FIG. I FIG.3 111 11-5 62 47 8 41 5785 485 61 57 57 53 S-29 41- 29 ' 653 -51 5 21 ---- 2--FIG. 4 |
