[Pd] Playing a bitmap

Kevin McCoy km.takewithyou at gmail.com
Tue Jan 23 06:59:57 CET 2007


That looks rad.  I'll have to try it out.

Kevin

On 1/22/07, Claude Heiland-Allen <claudiusmaximus at goto10.org> wrote:
>
> Chuckk Hubbard wrote:
> > On 1/23/07, Claude Heiland-Allen <claudiusmaximus at goto10.org> wrote:
> >> Chuckk Hubbard wrote:
> >> > Has anyone done this with Pd?  I thought I remembered something in
> >> > GEM, but I can't find it anywhere.  Just to have a cursor scroll left
> >> > to right and assign the different values of pixels to different
> >> > musical properties...
> >> >
> >> > -Chuckk
> >> >
> >>
> >> Like this?
> >>
> >> http://gridflow.ca/gallery/photo_pianoroll.pd.gif
> >
> > Yeah, I think so.  How's it work?
> > Thanks for sharing.
> >
> > -Chuckk
>
> Not sure exactly, it's not my patch, but from the screenshot it looks
> like it copies a scanline of greyscale pixels into an array, then
> rescales the array exponentially into annother array (frequency<->pitch
> conversion), then does an inverse fft and sends the resulting audio to
> dac~; the partials of the output sound being determined by the
> particular scanline of the image that was just copied to the array.
>
> I think this technique is a form of "scanned synthesis", but I'm not an
> expert on terminology.  At least searching pd-list for that term shows
> up some interesting results...
>
>
> Claude
>
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