Hi,
Great pix!
They really capture the look of those early units!
I have just returned from a week residency at the Experimental
Television Center where I worked with analog video units exclusively
and so now improving on earlier pd experiments is really on my mind.
I don't have GridFlow on this machine, but when I get to my desktop
machine, I will be checking out your patch for sure.
Thanks for sharing and for the tip, p
On May 4, 2006, at 5:27 PM, Claude Heiland-Allen wrote:
Hi Paris, all,
I've been experimenting with audio->video in Gridflow, see attached
example patches, they're not brilliant but might give you some
ideas. [#import~] is currently a (slow!!) abstraction I made, but
maybe one day I'll learn enough C, C++, Ruby, and Gridflow
internals to be able to make it a zillion times faster...Here's some I made earlier: </BluePeter>
http://claudiusmaximus.goto10.org/index.php?page=gallery/digital/CM- v-CM
(Stills from a DVD I'm working on, from time to time, it may even
get finished one day...) The corresponding audio is here:http://www.archive.org/details/ClaudiusMaximus_-_Soft_Rock_EP
Working from pre-recorded audio meant I couldn't do anything easy
to "sync" the frames and stop the "rolling", but I happen to like
temporal aliasing a great deal - flickery trippiness is go!The right inlet of an [osc~] or [phasor~] sets the phase between 0
and 1, but only once (as you have found). Here's a bonus tip:| [mtof] | [phasor~] |
| [*~ 1.5] <<< vary this >= 1, maybe using an envelope | | | [wrap~] | | [dac~]...for that classic osc sync sound ;-)
Paris Treantafeles 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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