illogic

illogic · utilities · schema v1

Combined attenuverter / math / logic utility. 4 cv inputs feed bipolar attenuverters (-1..+1); post-attenuverter outputs sum into `sum` and `diff`. Inputs in1+in2 are also gate-thresholded (>= 0.5) and combined into AND/NAND/OR; in1 alone drives a NOT.

A three-in-one CV utility: a four-channel attenuverter, a sum/difference mixer, and a digital logic block, all sharing the same four inputs. Each input runs through its own bipolar attenuverter knob (-1 to +1) and that attenuverted signal appears on its own ATT output AND feeds two mix buses: SUM (all four added) and DIFF (channels 1+2 minus channels 3+4). Separately, inputs 1 and 2 are treated as gates — thresholded at 0.5 — and combined into clean 0/1 AND, NAND, and OR outputs, while input 1 alone drives a NOT output. So you can attenuvert and mix CV on one half while deriving Boolean gate logic from the first two channels on the other — invert an LFO, blend modulation, and gate-AND two clocks, all from one module. (For continuous min/max/product math instead of digital 0/1 logic, see ANALOGLOGICMATHS.)

the faceplate

4 inputs · 10 outputs · 4 params

about this module

Hover a control, or open the patch panel and hover a jack.

inputs

id	cable	what it does
`in1`	cv	Signal input 1 (CV or audio, bipolar). Scaled by the ATT1 knob, summed into SUM/DIFF, and also thresholded at 0.5 as the first logic gate (it drives AND, NAND, OR and the NOT output). control voltage (CV)
`in2`	cv	Signal input 2 (CV or audio, bipolar). Scaled by ATT2, summed into SUM/DIFF, and thresholded at 0.5 as the second logic gate (AND, NAND, OR). control voltage (CV)
`in3`	cv	Signal input 3 (CV or audio). Scaled by ATT3 and added to SUM, subtracted in DIFF. Not part of the logic block. control voltage (CV)
`in4`	cv	Signal input 4 (CV or audio). Scaled by ATT4 and added to SUM, subtracted in DIFF. Not part of the logic block. control voltage (CV)

outputs

id	cable	what it does
`att1`	cv	Input 1 after its attenuverter (in1 × Att1) — a per-channel attenuverted/inverted copy. control voltage (CV)
`att2`	cv	Input 2 after its attenuverter (in2 × Att2). control voltage (CV)
`att3`	cv	Input 3 after its attenuverter (in3 × Att3). control voltage (CV)
`att4`	cv	Input 4 after its attenuverter (in4 × Att4). control voltage (CV)
`sum`	cv	The signed sum of all four attenuverted channels: att1 + att2 + att3 + att4. A four-input CV mixer with per-channel invert. control voltage (CV)
`diff`	cv	The signed difference (att1 + att2) − (att3 + att4): channels 1–2 lifted, 3–4 subtracted. Good for anti-correlated modulation from two pairs. control voltage (CV)
`and`	gate	Logic AND of inputs 1 and 2 (each thresholded at 0.5): goes high (1) only while BOTH are above threshold, otherwise low. A clean gate. gate / trigger
`nand`	gate	Logic NAND — the inverse of AND: high (1) unless both inputs 1 and 2 are above threshold, in which case it goes low. gate / trigger
`or`	gate	Logic OR of inputs 1 and 2: high (1) while EITHER is above threshold, low only when both are below. gate / trigger
`not`	gate	Logic NOT of input 1 alone: high (1) while input 1 is below threshold, low while it is high — an inverted gate of channel 1. gate / trigger

params

id	label	range	default	curve
`att1_amount`	Att1	-1..1	1	linear
`att2_amount`	Att2	-1..1	1	linear
`att3_amount`	Att3	-1..1	1	linear
`att4_amount`	Att4	-1..1	1	linear

controls

control	what it does
Att1	Channel-1 attenuverter (-1 to +1, default +1): scales input 1 on its way to the ATT1 output and the SUM/DIFF buses. +1 passes it through, 0 mutes it, negative values invert its sign. Does not affect the logic threshold (logic always reads the raw input).
Att2	Channel-2 attenuverter (-1 to +1, default +1): scales input 2 into ATT2 and the mix buses; 0 mutes, negative inverts. The logic block still reads the raw input 2.
Att3	Channel-3 attenuverter (-1 to +1, default +1): scales input 3 into ATT3, adds it to SUM and subtracts it in DIFF; 0 mutes, negative inverts.
Att4	Channel-4 attenuverter (-1 to +1, default +1): scales input 4 into ATT4, adds it to SUM and subtracts it in DIFF; 0 mutes, negative inverts.

source

illogic.ts on GitHub.