I know next to nothing about the mathematics of acoustics, but I am curious about what Dr. Geddes' software does. My question is mostly out of curiosity. Is it for simulating the acoustic performance of loudspeakers? If so, I wonder if modern commercial FEA program such as COMSOL can do what his software does. FEA is often the only practical tool when you have to deal with complex 3D geometries.
https://www.comsol.com/acoustics-module
(You will probably notice that I "borrowed" one of their loudspeaker SPL simulation plots for my avatar
)
I am not advocating any of us getting COMSOL here. A license costs several tens of thousands of dollars. I used it in my previous job for structural, thermal, and fluid flow analyses, but have never touched the acoustics module (my previous company had no reason to get a license for the acoustics module anyway).
I am also curious if somebody skilled in acoustics (I am thinking PhD level knowledge, not me) can get this type of simulations to work using FOSS FEA tools such as FEniCS.