SV: Re: [sdiy] Old analog synths chladni patterns!

[Magnus Danielson]

From: karl dalen <dalenkarl at yahoo.se>
Subject: SV: Re: [sdiy] Old analog synths chladni patterns!
Date: Thu, 10 May 2007 00:03:53 +0200 (CEST)
Message-ID: <385556.23848.qm at web27608.mail.ukl.yahoo.com>

> > 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
> 
> Well, it could depend on the philosphical idea about sounds in dimensions! 
> Dubito, ergo cogito, ergo sum. 
> 
> The speaker are a vibrating surface and it could be seen as a part of the
> synthesizers surface.:-)

What? Some *still* claims that speakers behave like a point source. Sigh!

Yeah, each element is a vibrating surface. The way that the speaker system
(include ports, grill, shape, placement, attitude etc.) converts the one-
dimensional voltage applied to them (another stupid concept - speakers
elements should be current-driven!) into a three-dimensional expanding
wavefront with time convolved over that one-dimensional time signal results in
how the synth "sounds" in the room.

To claim that the PA-system is part of the instrument becomes quite clear as
you include "how it behaves in the room" into the judgement.

Cheers,
Magnus