Arbitrary Shape Room Mode Simulator

[NTK]

Thanks NTK!
If I can find some time, in which discussion should I send my room measurements to get some advice?

I use Mathematica for my simulations, which is nowhere as flexible as dedicated commercial FEM packages such COMSOL, which have flexible 3-D CAD importing tools to work with 3-D models created using 3-D CAD tools. Dealing with complicated geometries using Mathematica is comparatively difficult and time consuming.

The technology/techniques for in-room frequency response analysis are also not very mature, at least for us non-professional enthusiasts. The quality of the analyses depends a lot on the input data, and many of which, for example the sound absorption characteristics of the walls, we don't know/understand well at all. So the analysis results can be highly inaccurate.

If your room is not too complicated, I should be able to help with the room mode analysis. May be perhaps some highly simplified room response at a few frequencies too.

And which is the best programming language (python?) to visualize the waves in the room in 3d?
Thanks in advance

I think you can do similar analyses using free FEM packages (e.g. FEniCS) for Python too, but I have not tried it myself. It does demand a fair bit advanced math knowledge for the user.

FEniCS

Open-source finite element library

fenicsproject.org

Example on solving the Helmholtz equation:

Helmholtz equation — FEniCS at CERFACS

 

[Frank71]

I use Mathematica for my simulations, which is nowhere as flexible as dedicated commercial FEM packages such COMSOL, which have flexible 3-D CAD importing tools to work with 3-D models created using 3-D CAD tools. Dealing with complicated geometries using Mathematica is comparatively difficult and time consuming.

The technology/techniques for in-room frequency response analysis are also not very mature, at least for us non-professional enthusiasts. The quality of the analyses depends a lot on the input data, and many of which, for example the sound absorption characteristics of the walls, we don't know/understand well at all. So the analysis results can be highly inaccurate.

If your room is not too complicated, I should be able to help with the room mode analysis. May be perhaps some highly simplified room response at a few frequencies too.

I think you can do similar analyses using free FEM packages (e.g. FEniCS) for Python too, but I have not tried it myself. It does demand a fair bit advanced math knowledge for the user.

FEniCS

Open-source finite element library

fenicsproject.org

Example on solving the Helmholtz equation:

Helmholtz equation — FEniCS at CERFACS

Thanks NTK, you're very kindly! As soon as I've some time I'll do some tests and get back to you