Soul from Scratch: Designing a More Portable Organ
summary
Recreates a Hammond B‑3 plus Leslie 122 in software and runs it on a microcontroller: original Arduino attempt fails for timing and can only mix a third of 91 tone wheels, then a Teensy 3.6 implementation hits CD‑quality audio, full MIDI control, vibrato/chorus, percussion, Leslie AM/FM and soft‑clip amp. Claims a 20,000x weight savings by replacing a 450 lb instrument with a tiny board, demos working audio on stage but notes some audio glitches and incomplete control wiring.
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chapters (12)
- 0:00Introduction
- 2:40The Hammond Organ
- 11:07Scope
- 14:44Hammond
- 17:39Oscillators
- 19:31Direct Digital Synthesis
- 21:29Phase Increment
- 22:25Volume
- 23:57Vibrato
- 26:11Percussion
- 33:31Amplifier simulation
- 35:56Conclusion
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