Experimental validation of the Statistical Energy Analysis for coupled reverberant rooms

L. Kovalevsky, R. Langley, P. Besnier, J. Sol
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引用次数: 12

Abstract

The Statistical Energy Analysis (SEA) is a statistical approach employed to solve high frequency problems of electromagnetically coupled reverberant cavities at a reduced computational cost. The key aspect of this approach is to avoid solving Maxwell's equations inside the cavity, using the power balance principle, which leads directly to the ensemble mean response of the system. In addition, the SEA gives an estimate of the standard deviation of the cavity's energy. Moreover, the diffuse field reciprocity formula is used to calculate the coupling coefficient induced by an aperture, which is neither electrically small nor large. The numerical results obtained for two rooms coupled through a circular aperture are compared with experimental data obtained in the reverberation chamber at IETR. After a brief introduction of the motivation for such a method, the SEA equations are presented, and then the experimental setup is described in section III. Finally, the good agreement between simulation and experiment is presented in section IV.
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耦合混响室统计能量分析的实验验证
统计能量分析(SEA)是一种用于求解电磁耦合混响腔高频问题的统计方法,其计算成本较低。该方法的关键是避免在腔内求解麦克斯韦方程组,使用功率平衡原理,直接导致系统的系综平均响应。此外,SEA给出了空腔能量的标准偏差估计。此外,利用漫射场互易公式计算了电不小也不大的孔径所引起的耦合系数。对两个房间通过圆孔耦合得到的数值结果与室内混响室的实验数据进行了比较。在简要介绍了这种方法的动机之后,给出了SEA方程,然后在第三节中描述了实验设置。最后,在第四节中给出了仿真与实验的良好一致性。
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