Room eigenmodes calculator

[ylio]

Hi all! I want to share this application to calculate and evaluate the natural frequencies of rooms modeled in 3D.

At the moment, the application does not consider materials, only rigid surfaces, but it is a very useful tool to evaluate the eigenmodes in irregular rooms. It is recommended to make the models in sketchup (they can be done for free with sketchup online), export in .stl format and import them in the simulator.

It allows calculating the Schroeder frequency (manually entering the Tmid) and there is an excel spreadsheet to evaluate the modal distribution according to Bonello's criterion.

In the following link there is a detailed tutorial. I hope it works for you!

https://github.com/Ylio7/room_eigenmodes_simulator

 

[abdo123]

This is outstanding work and deserves way more attention!

 

[ahofer]

Exactly the sort of premium content for which we come to ASR!

 

[Keened]

Any particular reason why 20hz is the lower boundary? As in it will take longer to compute or it will crash?

 

[ylio]

This is outstanding work and deserves way more attention!

Exactly the sort of premium content for which we come to ASR!

Thanks to both! I hope you find it useful!

 

[ylio]

Any particular reason why 20hz is the lower boundary? As in it will take longer to compute or it will crash?

Nothing in particular, just a general recommendation. You can put any value in that field without problems. What's more, it is not rigorous, it only defines an approximate value of minimum frequencies, since frequencies below the one that the user set as the minimum may appear in the results.

 

[voodooless]

I just tried running it on Crossover on the Mac, sadly it would not install the runtime. Traced it to some font issue:

Exception: java.lang.Error: Probable fatal error:No fonts found. (rethrown as com.comsol.util.exceptions.FlException) Messages: Probable fatal error:No fonts found. Stack trace: at sun.font.SunFontManager.getDefaultPhysicalFont(SunFontManager.java:1236) at sun.font.SunFontManager.initialiseDeferredFont(SunFontManager.java:1106) at sun.font.CompositeFont.doDeferredInitialisation(CompositeFont.java:287) at sun.font.CompositeFont.getSlotFont(CompositeFont.java:376)

Hopefully, I can resolve that. Quite excited (pun intended) to see what it does for my room

 

[voodooless]

Okay, resolved the font issue, but now it still won't restart, the application just crashed on startup.

 

[ylio]

I just tried running it on Crossover on the Mac, sadly it would not install the runtime. Traced it to some font issue:

Exception: java.lang.Error: Probable fatal error:No fonts found. (rethrown as com.comsol.util.exceptions.FlException) Messages: Probable fatal error:No fonts found. Stack trace: at sun.font.SunFontManager.getDefaultPhysicalFont(SunFontManager.java:1236) at sun.font.SunFontManager.initialiseDeferredFont(SunFontManager.java:1106) at sun.font.CompositeFont.doDeferredInitialisation(CompositeFont.java:287) at sun.font.CompositeFont.getSlotFont(CompositeFont.java:376)

Hopefully, I can resolve that. Quite excited (pun intended) to see what it does for my room

Here is an macOS version, but I have never try it: https://drive.google.com/file/d/1ukHKf7OULiHgOcgm-fGQuhzy9iqxdCc4/view?usp=sharing
I would love to get feedback on this version, mainly to achieve all the features that the Windows version has.

For windows, this .exe has the runtime included, you can try it: https://drive.google.com/file/d/1WuSCf06blz57-gtABkeXMThsOjKkl0u_/view?usp=share_link

 

[voodooless]

Cool, will try both

Edit:

The packed Windows version dies the same way as the normal version did in Crossover.

The macOS version starts I'll explore!

 

[ylio]

Cool, will try both

Edit:

The packed Windows version dies the same way as the normal version did in Crossover.

The macOS version starts I'll explore!

Ok, so it must be something because of the use of Crossover... Any comments about the macOS version will be very useful!

 

[neRok]

I was just playing around with this program. It's very interesting. Could I suggest some seemingly simple feature upgrades?

1. Ability to disable the "Levels" slider feature so that "blobs" don't appear.
2. Enable "scroll on hover" for the Eigenfrequency selector (you can currently scroll it, but only whilst it is "in focus" (ie. after having already clicked it)).
3. Link the table to the selector so that clicking on a frequency in the table renders that frequency (or maybe on dbl click).
4. Add a column in the table for the max pressure.
5. It would be really nice to be able to drop a "sample point" in the model (or many for speakers+listener positions) and have the pressure at that point appear as a column too.