Quad Polarizer: scale/offset, ring modulation, control center for modulation CVs used.
Blinds is a 4-channel voltage-controlled signal polarizer. Each channel consists of a polarizer circuit, also known as a four-quadrant multiplier. This circuit acts like a VCA, except that a negative control voltage will cause the output signal to be inverted, instead of being silenced. Blinds’ outputs are daisy-chained, allowing adjacent groups of 2, 3, or all 4 channels, to be mixed together.
One can think of Blinds’ as a voltage-controlled version of Shades, the control center for all the modulation CVs used in a patch. Many other uses are possible, though. For example, each individual channel can be used to scale/offset a CV; and with audio rate modulation signals, each channel acts like a ring-modulator, with massive potential for drones and feedback patches.
Blinds realizes a purer sounding version of ring-modulation, very close to the mathematical ideal of signal multiplication. Don’t worry though, the familiar sounds of bells, american metaphysical circuses and Daleks are still there!
-All inputs DC-coupled.
-All inputs handle audio-rate signals.
-Input impedance: 100k for all inputs.
-CV offset range: +/- 5V.
-Gain scale: linear, a +5V CV translates to a gain of 1.
-Gain range: +/- 2.
Current consumption: +12V: 70mA ; -12V: 70mA.