时域有限差分法将声波基本方程表示为一个时间和空间的迭代方程组，实现对室内声场中低频段的模拟计算。
The acoustical wave equation is presented a serial spatial and time iterative equations and room acoustics field is simulated using finite difference time domain method.
有限差分法利用网格节点的差分公式取代控制方程中的各阶导数，然后利用迭代方法求解差分方程，该方法简单、直观且易于掌握。
FDM replace the derivative in control equation with difference formula, and then solve the equation with iterative method, which is simple, intuitionistic and easy to master.
有限差分法利用网格节点的差分公式取代控制方程中的各阶导数，然后利用迭代方法求解差分方程，该方法简单、直观且易于掌握。
FDM replace the derivative in control equation with difference formula, and then solve the equation with iterative method, which is simple, intuitionistic and easy to master.
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