论文部分内容阅读
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,适合在我国工矿企业中广泛地推广应用
Simulation experiments show that the space absorber has the effect of reducing noise and reverberation time efficiently in the workshop. 100 ~ 2500Hz (1/3 octave band) to reduce the band 5 ~ 11dB, 100 ~ 1000Hz band to reduce the reverberation time of 0.3 to 0.6 seconds. Near the same noise reduction achieved under the premise of the sound-absorbing body hanging in the form and attached to the ceiling compared to save nearly half the material. Suspension of sound absorption bodies in large equipment-intensive workshops has the obvious effect of reducing the noise level and can save materials and is widely applied in industrial and mining enterprises in China