Amazing idea for a project Carl.
The way I see it you have two routes. 1) Do a full finite element physical model of a circular lamina and measure the amplitude at many points on the surface. The sand falls into minima nodes iirc . 2) Cheat. Create the visuals by mapping the known standing waves of various modes but missing out the "actually building a physical model" part. The latter is more feasible for a real-time simulation, but possibly more difficult than using the model. You'll need a much better mathematician than me to help you work out the mapping. In the worst case you could "sample" the data, do a frequency sweep and fit an equation to each standing pattern which is indexed by the frequency input from your voice. Hope that helps. Imho it's quite a challenging project to pull off, so best of luck. On Tue, 27 Mar 2007 15:23:34 +0100 "Carl Knott" <[EMAIL PROTECTED]> wrote: > I'd like to write a simulation of a Cymatic Tonoscope. > > I plan to create a physical model of a circular membrane, sand will > be sprinkled on top of it. When a person speaks into a microphone > the membrane will vibrate causing the sand to form standing wave patterns. > > Obviously this will be done in real time. > > Any ideas guys? I really want to write this :) > > All the best, > > Carl. > > _______________________________________________ > [email protected] mailing list > UNSUBSCRIBE and account-management -> > http://lists.puredata.info/listinfo/pd-list _______________________________________________ [email protected] mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
