Acid Lab.

Building a TB-303 from first principles — one oscillator, one filter, one envelope at a time.

P Music theory for acid (noob's primer)
Notes, scales, harmonics, West vs East — a playable keyboard + interactive index of the classic scales. done 00 Oscillator & the scope
Pitch, loudness, timbre. See sine/square/saw/triangle. Why saw is the acid osc. done 01 Gain & envelopes (ADSR)
Shaping loudness over time — pluck vs pad. The VCA, with a live envelope graph. done 02Low-pass filter & cutoff
Subtractive synthesis: start bright, carve harmonics away.planned 03Resonance & the squelch
Q, self-oscillation, 24 dB/oct — the acid whistle.planned 05The voice · Env Mod · Accent · Slide
Wire the whole panel: Tuning, Cutoff, Reso, Env Mod, Decay, Accent, Slide.planned 10The clock problem & drums & the DS-10 clone
Lookahead scheduler, synthesized 909 drums, step sequencer, capstone groovebox.planned