[sdiy] Old analog synths chladni patterns!

[Mattias Rickardsson]

On 09/05/07, Mason <masond at gmail.com> wrote:
> On 5/9/07, Magnus Danielson <cfmd at bredband.net> wrote:
> > From: harrybissell at copper.net
> >
> > > z-plane ???   :^)
> >
> > The sand will drop down into the zeros and get stuck.
> > Magnus - having actually done the exercise of plotting the s-plane/z-plane surfaces way back in time
>
> But did you plot them with sand? That's the question.

Must be tricky. With a digital synth, though, you could do these
'granular synthesis' exercises if you model the whole synth as AND
gates in the S-plane, so-called SAND gates... ;-P

A bit more serously, Ian was right with his questions:
"How? Where's the surface?"
The signal from a synthesizer is just a one-dimensional value as a
function of time, not a vibrating surface. And the vibrating surface
of the violin is a vibrating surface, not a sound, and definitely not
a one-dimensional value as a function of time. Some of the vibrations
make sound in the whole room, some doesn't. And almost all the sound
from the violin is made by something else than this particular
surface.

:-)

/mr