Hallo, As many people, i need to make a small and simple version of a reactable. Right now i'm looking for the best way to visualise the different soundwaves. I have read almost all the previous relative posts, but i still cannot figure out which program sould i use (processing, GEM, pdp, etc.).
If anyone has done anything like that please help, and also any advise about my project is wellcome..

Well, you can use any of the systems mentioned. The big question is: where is the sound coming from? If it is in Pd already, gem is probably a good choice.

Once you've determined what you want to visualize, you'll need to convert it into control data. This can be done in two (basic) ways: 1) sampling the amplitude over time 2) getting the frequency info with an fft.

Then, finally, you'll need to design something which uses that data to parameterize (multiple) GEM objects. ClaudMax's recursion tutorial is a good place to start with building recursive systems.

If you can describe what it is you want to visualize, perhaps someone can point you in the right direction.

Thanx man.
The saurce is pure_data.
The simpliest thing to start with is just to locate the fiducial (that 's the easy part) and draw from that spot to a certain target point on the table the given waveform (either by a [fft~] or by forming the mathematic equation of the soundwave, i 'll find a way) as it is shaped over time.
Final goal is to create a tangible additive synthesizer for educational reasons so to explain how sound is formed. So it will be start as clear sine graphs and endup as a more complex graph, but it all will be simple curves, as clear as posible.
If i do anything intresting i 'll post it.