In a Y7 test airplane, the cabin noise is analogized by an exciter to structure-bornenoise and by a loudspeaker to air-bornenoise.
在一架运七试验机上，激振器和扬声器分别被用来模拟由螺桨旋转在舱内引起的结构和气动噪声。
2
The structure-borne Institute noise sending out by outdoor cabinet of air conditioning is calculated using FEM/BEM and software both commercial and self-developed.