Hello Erik thank you again so much for all the help, I really appreciate it.
I get point 1 and point 3, I will try it for sure. I just have one additional question for point 2 since I have never done a coupled analysis. Does this mean that there will be ,,two analysis coupled in one"? If I understand it correctly - I set some pressure to omidirectional source as excitation and I evaluate velocities generated on non-perforated plate. In second analysis these velocities will be an excitation and I will be able to evaluate SPL in mics outside the box. Am I right?
Thank you and have a nice day