Contacts in acoustic bodies

RezaMF
RezaMF Member Posts: 1 **

I want to make an acoustic model of two rooms, separated by a concrete wall (3 geometries). The goal is one room emits sound and assessing the transmission loss in the other room (considering the concrete wall).
I want to know the contact condition between these three geometries. Do I need to define any specific contact between the two rooms and the concrete wall?
Should I consider the contacted sides "share" in the model definition?
And should I model the rooms as air (3D object) or it is better to model an empty cube with the absorption surfaces inside?

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