Based on the acoustic radi-ation modes and the acoustic field distribution modes, the formula for determining the acoustic power radiated from any vibrating surface is derived. The modal analysis in the acoustic radiation problems is enriched.

• 基于声辐射模态和声场分布模态；推导了计算任意形状振动表面辐射声功率的计算公式；丰富了声辐射问题中的模态分析内容.