Acoustics - measurement of sound insulation in buildings and of building elements - part 3 : laboratory measurements of airborne sound insulation of building elements 声学建筑和建筑构件隔声测量第3部分:建筑构件空气声隔声的实验室测量
On the basis of above parts , this paper discusses the noise muffling of several kinds of plates . it gives the modifying formula of the mass law and verifies its accuracy with an example . at last , this paper explains the effect of stiffeners and damping on the plates " muffling characteristics 在认识隔声理论的前提下,研究了板在宽频域范围上的隔声特性,并总结了板材加筋以及敷设阻尼对结构隔声的影响,具有一定的工程实用价值。