Hi Kyle and List,
On second thought, it might take a while for me to get back to
putting this all together with the earlier patches so attached is
just a simple experiment.
No big deal - it takes two oscillators and puts them into RGB.
To use this:
hit destroy/create+DSP on the left.
activate the toggle (green of the left oscillator).
use the slider to adjust a frequency of some horizontal (ish) bars.
(maybe around ~20)
start the metro to "freeze" the image.
- turn off the oscillator and do the same with the osc on the right
but go for something like vertical bars. maybe around 16000.
- turn them both on now to see the combined result.
a circular pattern.
if you now modulate either oscillator you will get some motion but it
will be more controlled.
A final video synth would have a variety of oscillators to choose
from, a mixer for adjusting the amplitudes of each waveform, filters
and other "pix_" operations, e.g. invert, etc.
There's a ton of ways to go with this.
Best, p
On May 4, 2006, at 12:16 PM, Kyle Klipowicz wrote:
Would you care to share your work with the list, in patch form?
~Kyle
On 5/4/06, Paris Treantafeles paris@parisgraphics.com wrote:
haha... i can't be the only one who has hit "send" then figured out the problem.
basically i wasn't really resetting the oscillators since sending a number to the right inlet of the oscillator wasn't enough. once i added a metro and "banged" the input, the sync worked.
still... if there's anything that comes to mind regarding best block~ to use, please feel free to share.
best, p
On May 4, 2006, at 11:48 AM, Paris Treantafeles wrote:
Hello List,
I've created a few patches with PD/GEM to emulate early video synths such as the Sandin, etc. which I'm quite happy with. At the heart of these patches is pix_sig2pix~ One thing I can't figure out though has to do with preventing the image from "rolling" - i.e. to stand still. The early video synths did this by having a "sync" input to oscillators. So if you fed one oscillator a vertical sync (~60 Hz) you would get stationary vertical bars whose width would depend on the main frequency of the oscillator. Doing this with another oscillator receiving a horizontal sync (~1500 Hz) results in horizontal bars. By mixing these and perhaps another (and adjusting the attenuation of these), various shapes appear. I can get all of this and more (e.g. add some filters for subtractive synthesis) but what I'm missing is how to do the sync correctly. Trying various values as reset inputs to say "phasor~" doesn't
do it.
I'm wondering if this is in fact related to blocksize~ instead. e.g. should the reset values of the oscillators be related in someway to the value set in blocksize~
Does anyone have any ideas about this?
Thanks for any suggestions!
Best, p
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