Hello!
I remember seeing a pd patch from stanford universities website a while ago of a digital waveguide. it had a graph (technically an array) with level on the y axis and frequency on the x axis, this meant you hit 'bang' and could see the frequencies in the sound, particularly the resonances of the waveguide, and see as they died down over time.
Does anyone know how to do this? I have a feeling an FFT is in there somewhere....?
Thanks

Here you go.

http://www.pdpatchrepo.info/hurleur/spectrum.mmb.pd

That's exactly what I wanted, thanks a lot!

Hi!
Is there a way to change this to have a rolling time graph of a variable?

Not this. But you can make that with fairly few objects. It just a matter of adding a value to the beginning of a list and lopping of the one at the end.

[r variable]
| [r feedback]
| /

|
<-- for array size of 100
| /
| /
| /
| /
| /
| /
[trigger list list]
| |
|
|
[tabset myarray]