In the proposed model, the coupling aperture is considered as two virtual surfaces and the radiosity on these surfaces is employed to implement the sound energy transmission between two subrooms.

• 该模型将耦合开口设置为分属于两个子空间的虚拟界面，在每个计算时间步长内，对各子空间中声辐射度进行独立计算，并通过虚拟界面上声辐射度的接收和传播实现子空间声能的交换。