I have followed Steam audio for a few years now. They still do not have proper propagation and diffraction support, they have something they call partial occlusion which takes a radius but the sound is cut off too aggressive anyway. A video I did I have tried Google resonance and Oculus Spatializer which both has crude occlusion support. But they cut off the sound even more aggressive since they only have direct line of sight support. Is there any solution with proper propagation, diffraction and transmission support?