Acoustic Form Finding with Grasshopper

Demonstration of the process for finding a diffusive surface based on known source points and target points. For more information follow the link.

http://lmnts.lmnarchitects.com/simulation/acoustic-form-finding

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Comment by lmnts on February 5, 2013 at 9:38am: We're just starting to get into this but here are two links to some of the material that I've been reading:

http://www.odeon.dk/ray-tracing

http://mysite.du.edu/~jcalvert/waves/soundwav.htm#A

Our next step is to work on getting something like the scattering coefficients incorporated into the setup. I'm also thinking it might be useful to "blur" the meshes to simplify the detail when analyzing the reflections for lower frequencies.

The experience we've had with acoustics for performance halls has seemed a bit like black magic at times because we don't fully grasp what is in play. Our goal is to generate design sketches and diagrams that we can discuss with our acoustical consultant and hopefully glean a better understanding of how to improve our design.

Comment by David Rutten on February 5, 2013 at 6:06am: Are there reliable algorithms for simulating sound?

Comment by lmnts on February 4, 2013 at 12:53pm: Not exactly. Raytracing is often used as a shorthand for calculating reflections. The actual interaction of sound with surfaces is a bit more complicated because of the relationship of wavelengths to size of reflecting surfaces.