that's additive resynthesis
it tends to have a metallic/edgy (sometimes glassy) sound
with additive you're basically building a sound by adding harmonics on top
of one another
using sine waves like in fourier math
converting picture to sound and vice versa lends itself to this method
(that's the resynthesis part of it - exporting sound as picture,
manipulating the picture
then recoding as a new sound, or taking a picture and making a sound out of
it's analysis)
it used to be a pretty technical sport needing stacks of manuals, it's
fairly obtuse
there are several recent synths that make additive resynthesis much more
accessible
see: Virsyn Cube2 and some of the Camel Audio stuff (Chameleon i think)
these do additive quite well and much faster
On 2/18/06, Richard Barnett <richard.barnett@pobox.com > wrote:
quoted 24 lines ISTR there's an Aphex Twin track -- fairly recent, off the Richard D
>
>
> ISTR there's an Aphex Twin track -- fairly recent, off the Richard D
> James album or Windowlicker single perhaps -- where the graph of
> frequencies (y) against time (x) contains an image of his face.
>
> One googling later...
>
> Original (?) page with images: http://www.bastwood.com/aphex.php
>
> A couple of articles on the technique of turning images into sound:
> http://robosexual.typepad.com/glob/science/index.html
> http://www.scientific-computing.com/scwmarapr05sonification.html
>
> More links:
> http://www.wired.com/news/culture/0,1284,52426,00.html
> http://www.nobleworld.biz/images/ARTL8.pdf
>
>
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