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建立了腔体低频声场的声传递函数的概念，并在模态测试和声场指定点的力／声频响函数测量的基础上，提出了求解由腔体内指定点声压和振动壁板的体积速度的比值所决定的声传递函数的方法，即由模态实验得到结构的模态参数，变换激励力的位置，形成并求解有关声传递函数的线性方程组。同时分析了腔体壁板振动区域划分总数存在上限的原因。实验结果证明了这种声传递函数求解方法的可行性。
The concept of acoustic transfer function of low-frequency sound field in cavity is established. Based on the modal test and the measurement of force / sound frequency response at the designated point of sound field, The method of acoustic transfer function determined by modal experiment is that modal parameters of structure are obtained by modal experiment, the position of excitation force is transformed, and a linear system of equations about acoustic transfer function is formed and solved. At the same time, the reasons for the upper limit of the total number of vibration area divisions in the cavity wall are analyzed. The experimental results prove the feasibility of this solution of acoustic transfer function.