From: Brian MacDonald <brianm@kuci.org>
quoted 1 line <WARNING: HIGH GEEK FACTOR>
> <WARNING: HIGH GEEK FACTOR>
:-)
quoted 6 lines Again, it's a tricky thing to try force something that's
> Again, it's a tricky thing to try force something that's
> inherently multi-dimensional (graphics -- at least 2 dimensions) into
> something that's basically one-dimensional (audio -- on a per track basis)
> and back again. You have to put a *lot* of work into a tool that will
> create interesting and varied results converting from one direction and
> back the other way again -- no doubt.
It's not as hard as you think. Audio in the time domain is two dimensional
(amplitude vs time) and in the Frequency domain is still so, frequency vs.
time. The tool for converting between the two domains (the FFT) is very well
understood at this point. However we are probably at the infancy of picture
to audio conversion, there is no reason that spectral information in the
picture could not be used to generate phase information and so on.
quoted 5 lines Though I'm not really interested in sound that's coming just *purely*
> Though I'm not really interested in sound that's coming just *purely*
> from a graphic source. I was thinking more along the lines of certain
> graphic factors and traversals triggering source samples, or possibly
> seeding an array of preconstructed pieces... rhythmic, moody, chaotic,
> whatever.
It is interesting, but such tools are only going to be as effective as the
algorithms you choose to put around them. If anything, you'd be better of
working with stuff like CSound or the like and projecting the results into a
graphic context, fiddling about until you find interesting patterns and then
turning up the volume. You might be amused to know that there was a patch on
the Nord Modular list recently designed to generate images of 3d cubes on an
oscilloscope using XY plots :-)
quoted 4 lines * Color (redness, greenness, blueness, hue, saturation, etc.)
> * Color (redness, greenness, blueness, hue, saturation, etc.)
> * Edges/Bluriness
> * Overall color distribution
> * Clusters of similar graphic regions and locations thereof
If you can tolerate offline image processing the possibilities are of course
a lot wider.
quoted 4 lines All these could simply be triggers/seeders of already pregenerated sound
> All these could simply be triggers/seeders of already pregenerated sound
> somehow. Maybe just put a point on some 2-dimensional color photo file
> and have it run around the bits, and do things with that... just as an
> example.
You might also find it interesting to investigate audio interfaces to
cellular automata software. I can think of some interesting ways that this
would combine with granular synthesis. I don't have the skills to try it
yet, but hopefully within about a year. I have no idea what it would sound
like...pretty different from anything that is out there now.
quoted 2 lines Anyway, maybe this typing time is better spent coding up such a little
> Anyway, maybe this typing time is better spent coding up such a little
> gadget.... but just some food for thought on the graphics<-->sound thread.
You ought to join the IDM-making list for this kind of entertaining geeky
stuff. It's on yahoo and quite a nice list, not too much traffic and a high
s/n ratio.
Anig Browl
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