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应用统计能量分析法SEA(Statistical Energy Analysis)预测板隔声量,先建立板材的SEA模型,将板材的隔声量预测转变成求解声振动功率的线性代数方程组,对方程组的变量(SEA参数)值进行确定,得出板材的隔声量,再根据混响室法测量板材实际隔声量。将预测结果与实验结果进行对比分析,证明统计能量分析法能有效的预测板材隔声量。
SEA (Statistical Energy Analysis) is used to predict the sound insulation of the slab. The SEA model of the slab is established firstly to convert the prediction of the sound insulation of the slab into a linear algebraic equation for solving the acoustic vibration power. The variables (SEA parameters) Value is determined, the amount of sound insulation plate, and then according to the reverberation chamber method to measure the actual sound insulation plate. The predicted results and the experimental results were compared and analyzed, which proved that the statistical energy analysis method can effectively predict the amount of sound insulation plate.