风机噪声的传播有两种途径:一种是以空气为介 质直接通过风道与机房的墙或顶板向毗邻的房间辐射 噪声,通常称之为空气传声;另一种是以固体为介 质,风机的振动通过基础沿建筑结构传递振动,引起 毗邻房间墙和楼板的振动从而辐射噪声,称之为固体 传声。前者用消声或提高围护结构的 Fan noise propagation in two ways: one is the air as the medium directly through the air duct and the engine room wall or roof to adjacent rooms radiating noise, usually called airborne sound; the other is a solid medium, The vibration of the fan transmits vibrations along the building structure through the foundation, causing the vibration of adjacent room walls and floors to radiate noise, which is called solid sound transmission. The former silencer or improve the envelope structure