The prediction model of the impact noise insulation by using the experimental modal analysis(EMA) and the transfer mobility theory together with the four-pole parameter method is established in this paper. The raised floors can be decomposed into a number of resilient units arranged in series. The transfer mobility function from the force input end to the sound receiving end can be characterized by the mobility function of individual resilient unit. Thus, it is possible to utilize this model for selecting appropriate resilient units to reach the required FIIC at an early stage. An design application example of FIIC 72 raised floor is also illustrated and discussed.
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