在ACTRAN2020里面设置管道模态，导出.EDAT格式计算就会报错，内容为“Failed to gather speed of sound from neighbor component for modal_duct 3 (the component does not touch any component from which speed of sound information can be extracted)。在定义材料属性的时候有定义声速，但是一运算就报错
将声源区与扩散区，分别设置finite region试试