Room size

The last position of the microphone positions say about the size of the simulated sound environment. It 20x12x3.5 m. The left front leg instrument coincides with the center of the room. There are calculators that can assist in determining the axial modes of the room.
- http://www.acoustic.ua/forms/calculator8.html#
- http://amroc.andymel.eu/?l=2000&w=1...mp;r60=0.6
It is interesting to know whether the walls have simulated this environment? If so, it would be nice to be able to change the size of this room. Or move the tool.
(My own keyboard is 10 cm shorter )