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作为无纤维化材料的微穿孔吸声板在建筑声学中应用日广,但过去大多是按贴墙(顶)后留空腔装置的构造形式来考虑的。本文根据混响室实验结果讨论了两种不同形式(平板式和圆筒式)的微穿孔空间吸声体的声学特性。文中有关价格性能比的分析,对设计应用也极具参考价值。由于它们的造型可有多种变化,亦为室内装饰提供了更多选择。与金属板相比,塑料膜片制成的微穿孔空间吸声体,则有质轻价廉,加工和吊装方便等优点。有关平板式空间吸声体的理论分析将另文介绍。
Micro-perforated sound-absorbing panels, which are fiber-less materials, are widely used in architectural acoustics, but in the past most of them were based on the construction of a cavity device behind the wall (top). In this paper, we discuss the acoustical properties of two different forms of microperforated sound-absorbing bodies (flat and cylindrical) based on experimental results of reverberation chamber. Analysis of the price performance ratio, the design and application is also of great reference value. Due to their variety of styling variations, interior options are also offered. Compared with the metal plate, micro-perforated plastic diaphragm made of sound-absorbing space, then the quality and cheap, processing and lifting convenient and so on. The theoretical analysis of the flat space absorber will be introduced separately.