“At this time, they acquired yet another sort of synthesizer, a ‘Scan Processor’ designed by Steve Rutt and Bill Etra … The Scan Processor displays a video camera image on a small monitor built into its console and specially prepared to reorganize the television raster, or the 525 horizontal lines that make up the screen. This raster reorganization or manipulation is done by a process of deflection modulation. In an unaltered television, deflection circuitry regulates electromagnets (the yoke) which in turn guide the movement of the electron beam in a precise, regular scanning pattern of 525 lines, top to bottom, every 1/30th of a second. The video screen of the Rutt-Etra Scan Processor contains a system of electromagnets and deflection coils into which the user can input signals which alter the scanning pattern of the electron beam across the face of the display in unusual, but predictable, ways … [describes “The Matter”]. The altered Rutt-Etra image must then be recorded by a second camera pointed at its display screen, in order to impart the proper TV timing information that allows us to re-view the image on a standard monitor.”