Shifting Inverting Signal Mingler (SISM) OOS and pointing upwards is a

and pointing upwards is a definite CV

It's wealth of connection jacks allows it to be connected to the MS-20 and a variety of other synthesizers

which changes the "ringy-ness" or width of the bands

originally designed for controlling the light boxes of Dan Conrad

These were all paper circuits

Shifting Inverting Signal Mingler (SISM) OOS and pointing upwards is aThe SISM is a 4 channel voltage manipulator that can scale, invert, attenuate, shift (dc offset), mix, split, and slice your CV and audio signals. A plethora of red and blue LEDs (14) show exactly what each channel and output jack is doing: red = negative voltage, blue = positive. Each channel is independent and has an input jack, output jack, a knob for attenuating inverting (Scale), and a knob for applying positive or negative DC offset (Shift).