采用脉冲激励响应的方法对两种不同类型的教堂早期声能量衰变过程进行了研究.结果表明,在Barron模型中耦合效应比声源与接收点的距离影响更大.文中还提出了延时耦合空间模型.将几何声学引入统计声学来检测扩散场条件,同时通过对声音从声源传播到每个扩散场子空间的延时,修正了关于脉冲宽度的初始条件.基于耦合空间的理论预测与实际测量结果较为一致. In the Barron model, the coupling effect is more affected than the distance between the sound source and the receiving point by using the pulse excitation response method. The decay process of the early acoustic energy in two different types of churches is studied. Space model, the geometrical acoustics is introduced into the statistical acoustics to detect the diffusion field conditions, and the initial conditions of the pulse width are modified by the delay of the sound propagating from the sound source to each diffusion field space.Based on the theoretical prediction of the coupling space and the actual The measurement results are more consistent.