Sound diffuser simulation, for you audio geeks! Showing acoustic waves hitting an optimized surface that scatters sound. Check out http://Arqen.com/sound-diff...
for Free DIY diffuser blueprints!...
I designed these diffusers by combining two engineering paradigms: physical modeling and evolutionary optimization (simulated natural selection). If you're into details, check out the thesis at http://Arqen.com/acoustics/
. There are more designs, and free blueprints if any of you DIY geeks want to build them.
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An acoustic diffuser (or diffusor) is a device used to treat unwanted echoes and reflections. Unlike absorption, diffusers preserve the liveliness of your room because they don't absorb much sound energy. Instead, they disperse it, spreading the energy around the room.
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I designed these while searching for the answer to the question: what simple-to-make profiled wall shape gives an optimal trade-off between uniform diffusion and compact geometry? And how can this surface be discovered using a simple design system?
The design system (optimization framework) uses an integer genetic algorithm to find candidate designs, and grades them using a finite difference time domain (FDTD) scattering simulation. I then generated fractal diffusers from the optimized shapes. The fractal sound diffusers are inspired by the "diffractal" by RPG Diffusor Systems.
The video shows a FDTD simulation of scattering from one of the optimized acoustic diffusers. This diffuser consists of 5 panels, modulated with an aperiodic sequence (arranged in a special way). Details + more nerdgasms at http://Arqen.com/