Mastering MATHS: the West-coast analog computer

In a small Eurorack rig — especially the live, one-case techno or ambient setup where every HP counts — MATHS is usually the only modulation engine on the case, expected to be envelope, LFO, portamento, CV mixer, and offset source at once. This module builds the fluency to make that true on stage: you finish by recording a continuous “cookbook” take that walks through every core function without stopping to consult a manual.

Start supported: with the channel-layout map in hand, patch the two canned envelope recipes (the retriggerable AD via Trigger IN, then the gate-tracking ASR via Signal IN) and feel why choosing the wrong input is the classic MATHS error. Engage Cycle to turn the same channel into an LFO, using the triangle and ramp LFO walkthroughs as just-in-time pointers, and sweep Vari-Response to hear the curve morph from snappy-log to swelling-exponential. Then remove the training wheels: chain Channel 1 into Channel 4 with End-Of-Rise to build the signature two-channel ADSR, run a sequencer’s pitch CV through the slew limiter for portamento, and finish on the mixing side — attenuverter-weighted SUM, the OR/INV logic outputs, and a clean DC offset with unused channels nulled at 12:00.

The required atoms are exactly what the capstone reel cannot survive without: the channel anatomy, the trigger-versus-signal distinction, cycling, slew, the SUM bus and attenuverters, the end-of-stage gates, and the ADSR chain. The supporting atoms deepen the cookbook afterward — envelope following, pulse delay, half-wave rectification, voltage-controlled clocking, the BOTH CV’s inverted exponential response, and the Buchla/Serge lineage that explains why this “analog computer” thinks the way it does.