Isadora Native v Rutt-Etra Effect | TroikaTronix Forum
The Rutt-Etra plugin was a central visual component in Trialog and Interludes. It allowed real- . contemporary internet memes like the pepper-spray cop . couple devotions for dating couples pros and cons of dating a taller girl 10 signs you're dating a manchild · online dating ist er verliebt. You can get a better sense of what this kind of effect looks like by playing with the Rutt Etra-izer online. This simple tool lets you play with one.
Since the sixties, Etra had used oscillators hooked up to monitors as part of his performances. Rutt had designed stroboscopic devices and was familiar with the components and operating mode of analog computers. Louise Etra was involved in every stage of the design and construction.
The second device was built from off-the-shelf components, but its AC electric power supply created effects that were hard to control and reproduce. In the prototype, Rutt and Etra used an off-the-shelf television monitor connected to the modules via cables.
For the final version ofthey built the entire screen, which was then integrated with the other modules.
In the early seventies, signal processing devices of this type were mainly designed for artists. Yet this marketing venture failed given that the cost of producing copies was too high and the demand for such a device inexistent in television broadcasting. When the input signal is an image captured by a camera feed, these lines seem to adopt the contours of objects. The first box contains the monitor and an amplifier, the second box includes the components with scanning functions, and the third box constitutes the interface with raster control units and waveform generators.
Two models of the device were marketed: Brief list of materials Modules of electronic components on a processing rack. In the internal mechanism of a normal television screen, the synchronization signals are controlled by magnets that guide the movement of the yoke so as to scan the lines of the cathode tube. The modulations affect the network of scanned lines, which are deflected so as to allow specific display functions.
The functions are operated without generating distortion or affecting the resolution of the image. The display control units include clockwise and counter-clockwise rotating knobs to precisely regulate the voltage directed to the cathode display.
Some functions help expand or compress the dimensions of the raster by varying the amplitude of vertical height or horizontal width scanning. This video synth was an attempt to begin manipulating video in same manner as sound was being manipulated in the s, and was truly a ground breaking examination of our relationship to video — live video especially.
One of the most famous elements of the Rutt Etra Synth was z displacement, the change in the depth of an image based on its luminance.
Rutt/Etra Scan Processor
This simple tool lets you play with one slice of what the original video synth did. You can find more from v here: Specifically, the sample network talking about image manipulation really got my attention. Ultimately, we want to take an image video later, but for now an image and add together the RGBA values of an individual pixel and use that number to transform said pixel in a z dimension. Once we replicate the original, then we can start to talk about where we can start to play.
Next, we want to down sample some of this image.
The Aesthetics of Steina and Woody Vasulka : Rutt/Etra Scan Processor
All of that should look like this: Open up the parameters window for your resolution TOP and on the common page change the Output Resolution parameter to Quarter: If we think back to where we started this process with an intent to transform luminance into depth, then we know that one of the operations we need to complete is to add together the RGBA values of our pixels in order to have a single number we can use to manipulate a surface.
To get us started we first need to convert our image into channel data that we can manipulate. This operator is going to allow us to look at our TOP as if it were all Channel data. The next series of channel operators is going to allow us to make some changes to our data.
For starters, I want to be able to control the strength of this effect with a slider. Next we need to write a simple expression in our math2 operator in order to be able to use the slider as an input method. Before we move away from this portion of our network we need to add one final operator, a Rename CHOP. In the to field of the rename CHOP type tz: This operator is going to allow us to create some geometry out our CHOP data.