拡張SEAを用いた建物内固体伝搬音の予測方法と適用例

抄録

Statistical Energy Analysis (SEA) which is a technique for forecasting the state of structure-borne sound in structure is extended and reformed. The assumption that "the system is diffuse, "which limits the range of applicability of SEA is relaxed by expressing the energy of the elements as the sum of the component due to reverberant wave vibration and the component due to direct wave vibration. The extended SEA is able to handle even cases in which the system is not very diffuse and the attenuation is not so small. A comparison of these computed values with the actual measured values, proved that the extended SEA makes it possible to predict the characteristics of vibration propagation or attenuation in the buildings.