1·Noise inside a building can be reduced if both the external and internal walls are made of sound deadening materials.
建筑室内的噪音也可以得到减少，前提是外墙和内墙都要运用这种隔音材料。
2·Additional, wall, condole can choose deadening very, if mineral wool is sound-absorbing board wait.
另外，墙壁、吊顶可选用隔音材料，如矿棉吸音板等。
3·The utility model has a good sound-deadening effect and is not easy to bring the phenomenon of icing and clogging, the power consumption is very small, the structure is simple, and the cost is low.
本实用新型消声效果好，不易产生结冰堵塞现象，功率损耗很小，结构简单，制造成本低。