摘要
模拟实验证明，空间吸声体在车间中具有高效降低噪声和混响时间的效果。１００～２５００Ｈｚ（１／３倍频程）频段内降低５～１１ｄＢ，１００～１０００Ｈｚ频段内降低混响时间０．３～０．６秒。在取得相近降低噪声水平的前提下，吸声体的悬挂形式与贴在天花板上相比，可节约近一半材料。在多设备大型车间中悬挂吸声体，具有降低噪声水平的明显效果，并能节约材料。
The model experiment showed that suspended sound absorbers could efficiently reduce the intensity of noise and reverberant time in the workshop (5￣lldB in the range between 100Hz and 2500Hz,0.3￣0.6 seconds in the range between 100Hz and 1000Hz ).Using suspended absobers can save material compared with putting sound absorbers on the ceiling .The suspended sound absorbers have the advantages in stalling and changing easily.The suspended sound absorbers could be used widely in factories.
关键词
职业危害
噪声
悬挂吸声体
噪声降低
Suspended sound absorber,Scalemodel workshop,Noise reduction
