4plexer

fourplexer · utility · schema v1

4-in / 4-out discrete signal router for audio AND cv (they share the Web Audio substrate, so either cable type patches in and routes identically). Four signal inputs (in1..in4) and four signal outputs (out1..out4); each output has its own selector knob (sel1..sel4, shown 1..4 on the card) choosing which ONE of the four inputs that output carries — discrete, never a blend or in-between, with a ~4 ms declick crossfade on the switch so audio-rate inputs don't click. Each output also has its own GATE input (gate1..gate4): every rising edge advances that output's selector to the next input (1→2→3→4→1, wrapping). The four outputs are fully independent — different selections, different gate streams. Knobs are directly settable in the UI (click/drag to a position) and the selection persists in node params (synced + saved); a gate-advance posts the new index back so it persists exactly like a manual click. Defaults are a straight pass-through (out1=in1, out2=in2, out3=in3, out4=in4).

A 4-in / 4-out discrete signal router (a four-way switch matrix). There are four signal inputs and four signal outputs, and each output independently selects exactly ONE of the four inputs to carry — it is a hard switch, never a blend or mix. You can set each output's selector by hand with its knob, or advance it with a clock: every output also has its own GATE input whose rising edge steps that output's selector to the next input (1→2→3→4→1, wrapping). Out of the box the four selectors are 1,2,3,4 so it passes straight through; from there you can route any input to any outputs, fan one input to several outputs, or clock the selectors to make a rhythmic source-switcher. Audio and CV both route identically through it.

the faceplate

8 inputs · 4 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 — available to any output whose selector points at it. Audio or CV route the same way. control voltage (CV)
`in2`	cv	Signal input 2 — selectable by any output. control voltage (CV)
`in3`	cv	Signal input 3 — selectable by any output. control voltage (CV)
`in4`	cv	Signal input 4 — selectable by any output. control voltage (CV)
`gate1`	gate	Clock/advance for output 1: each rising edge steps OUT 1's selector to the next input (1→2→3→4→1, wrapping). The advanced position is saved like a knob turn. gate / trigger
`gate2`	gate	Clock/advance for output 2: each rising edge steps OUT 2's selector to the next input, wrapping. gate / trigger
`gate3`	gate	Clock/advance for output 3: each rising edge steps OUT 3's selector to the next input, wrapping. gate / trigger
`gate4`	gate	Clock/advance for output 4: each rising edge steps OUT 4's selector to the next input, wrapping. gate / trigger

outputs

id	cable	what it does
`out1`	cv	Output 1 — carries whichever single input OUT 1's selector currently points at. control voltage (CV)
`out2`	cv	Output 2 — carries the single input selected by OUT 2. control voltage (CV)
`out3`	cv	Output 3 — carries the single input selected by OUT 3. control voltage (CV)
`out4`	cv	Output 4 — carries the single input selected by OUT 4. control voltage (CV)

params

id	label	range	default	curve
`sel1`	OUT 1	0..3	0	discrete
`sel2`	OUT 2	0..3	1	discrete
`sel3`	OUT 3	0..3	2	discrete
`sel4`	OUT 4	0..3	3	discrete

controls

control	what it does
OUT 1	Which input (1–4) output 1 carries. Turn it to route by hand; GATE 1's rising edges also advance it. A readout shows the current source (e.g. '← IN 2').
OUT 2	Which input (1–4) output 2 carries — set by hand or advanced by GATE 2.
OUT 3	Which input (1–4) output 3 carries — set by hand or advanced by GATE 3.
OUT 4	Which input (1–4) output 4 carries — set by hand or advanced by GATE 4.

source

fourplexer.ts on GitHub.