[Pd] Playing a bitmap

Thu Jan 25 15:42:38 CET 2007

hey chuckk,

given the picture, no wonder it sounds bad ;-)

i have actually not used this object myself (i use it's inverse) so not
much help - maybe IOhannes or someone will know more, or there's the
source code...

good luck,
p

> -------- Original Message --------
> Subject: Re: [Pd] Playing a bitmap
> From: "Chuckk Hubbard" <badmuthahubbard at gmail.com>
> Date: Thu, January 25, 2007 4:58 am
> To: "paris at parisgraphics.com" <paris at parisgraphics.com>
> Cc: PD-list at iem.at
> 
> Here's what I have so far, using:
> http://upload.wikimedia.org/wikipedia/en/d/df/US_%241_obverse.jpg
> Since it's not copyrighted.
> I don't understand exactly what's happening.  It doesn't sound to me
> like it's what I want; the frequencies just don't seem to line up.
> 
> -Chuckk
> 
> On 1/25/07, Chuckk Hubbard <badmuthahubbard at gmail.com> wrote:
> > So, it seems to me the input would have to be a couple of pixels at
> a
> > time, with a small block size, in order to scroll.  Like enter a
> > column of pixels and do, as someone mentioned, reverse FFT to get a
> > block.  Maybe map the image to a rectangle with width 1, then slide
> it
> > across?  I don't necessarily have to see the scrolling or even the
> > image, but it would be nice.
> > I don't want to be obnoxious, but I know next to nothing about Gem,
> so
> > any suggestions are welcome.
> >
> > -Chuckk
> >
> > On 1/23/07, paris at parisgraphics.com <paris at parisgraphics.com> wrote:
> > > you might also want to check out the Gem object:
> > >
> > > pix_pix2sig~
> > >
> > > best,
> > > p
> > >
> > >
> > >
> > > > -------- Original Message --------
> > > > Subject: Re: [Pd] Playing a bitmap
> > > > From: "Kevin McCoy" <km.takewithyou at gmail.com>
> > > > Date: Tue, January 23, 2007 12:59 am
> > > > To: "Claude Heiland-Allen" <claudiusmaximus at goto10.org>,
> PD-list at iem.at
> > > >
> > > > 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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> > > >
> > > >
> > > > --
> > > >
> > > >
> > > > ++++
> > > > http://pocketkm.blogspot.com
> > > >
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> > -Theodore Roosevelt
> >
> 
> 
> -- 
> "Far and away the best prize that life has to offer is the chance to
> work hard at work worth doing."
> -Theodore Roosevelt
> 
> ---------------------------------------------------------------------
> #N canvas 0 0 193 195 12;
> #N canvas 452 52 743 729 gem 1;
> #N canvas 0 0 450 300 gemwin 0;
> #X obj 132 136 gemwin;
> #X obj 67 89 outlet;
> #X obj 67 10 inlet;
> #X obj 67 41 route create;
> #X msg 67 70 set destroy;
> #X msg 142 68 set create;
> #X msg 132 112 create \, 1;
> #X msg 198 112 destroy;
> #X connect 2 0 3 0;
> #X connect 3 0 4 0;
> #X connect 3 0 6 0;
> #X connect 3 1 5 0;
> #X connect 3 1 7 0;
> #X connect 4 0 1 0;
> #X connect 5 0 1 0;
> #X connect 6 0 0 0;
> #X connect 7 0 0 0;
> #X restore 618 523 pd gemwin;
> #X msg 618 504 destroy;
> #X obj 264 40 gemhead;
> #X obj 344 16 bng 15 250 50 0 empty empty pix_load 20 8 0 8 -262144
> -1 -1;
> #N canvas 0 0 599 378 image 0;
> #X obj 77 48 inlet;
> #X obj 77 344 outlet;
> #X obj 77 205 pix_image ../../doc/gem/examples/data/fractal.JPG;
> #X obj 223 55 inlet;
> #X msg 223 123 open \$1;
> #X obj 223 100 openpanel;
> #X connect 0 0 2 0;
> #X connect 2 0 1 0;
> #X connect 3 0 5 0;
> #X connect 4 0 2 0;
> #X connect 5 0 4 0;
> #X restore 264 69 pd image;
> #X obj 65 459 pix_pix2sig~;
> #X msg 590 581 \; pd dsp 1;
> #X obj 65 261 pix_texture;
> #X obj 65 230 pix_crop;
> #X floatatom 39 155 5 0 0 1 dimX - -;
> #X floatatom 80 180 5 0 0 1 dimY - -;
> #X floatatom 170 164 5 0 0 1 offX - -;
> #X floatatom 145 197 5 0 0 1 offY - -;
> #X obj 65 386 rectangle 0.008 3;
> #X obj 65 426 pix_invert;
> #X obj 40 414 tgl 15 0 empty empty empty 17 7 0 10 -262144 -1 -1 1
> 1;
> #X obj 65 356 translate;
> #X msg 195 297 \$1 0 0;
> #X floatatom 98 334 5 0 0 0 - - -;
> #X obj 522 158 pix_texture;
> #X obj 522 202 rectangle 5 3;
> #X obj 195 240 - 400;
> #X obj 195 269 / 80;
> #X obj 34 21 metro 50;
> #X obj 34 3 tgl 15 0 empty empty empty 17 7 0 10 -262144 -1 -1 0 1
> ;
> #X obj 73 56 f 0;
> #X obj 106 55 + 1;
> #X msg 109 24 0;
> #X obj 468 443 block~ 2048 32;
> #X obj 92 505 +~;
> #X obj 93 542 /~ 2048;
> #X obj 93 581 rifft~;
> #X obj 93 615 outlet~;
> #X msg 170 39 \$1 50;
> #X obj 170 62 line 0 1;
> #X obj 98 286 loadbang;
> #X msg 98 310 1;
> #X msg 39 124 1;
> #X msg 80 136 427;
> #X msg 135 134 0;
> #X obj 58 94 loadbang;
> #X connect 0 0 1 0;
> #X connect 1 0 0 0;
> #X connect 2 0 4 0;
> #X connect 3 0 4 1;
> #X connect 4 0 19 0;
> #X connect 4 0 8 0;
> #X connect 5 1 29 0;
> #X connect 5 2 29 0;
> #X connect 5 3 29 1;
> #X connect 7 0 16 0;
> #X connect 8 0 7 0;
> #X connect 9 0 8 1;
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> #X connect 11 0 21 0;
> #X connect 12 0 8 4;
> #X connect 13 0 14 0;
> #X connect 14 0 5 0;
> #X connect 15 0 14 0;
> #X connect 16 0 13 0;
> #X connect 17 0 16 2;
> #X connect 18 0 16 1;
> #X connect 19 0 20 0;
> #X connect 21 0 22 0;
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> #X connect 26 0 25 1;
> #X connect 27 0 25 1;
> #X connect 29 0 30 0;
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> #X connect 35 0 36 0;
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> #X connect 38 0 10 0;
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> #X connect 40 0 37 0;
> #X connect 40 0 38 0;
> #X connect 40 0 39 0;
> #X restore 65 54 pd gem;
> #X obj 51 93 dac~;
> #X connect 0 0 1 0;
> #X connect 0 0 1 1;
> 
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