r/proceduralgeneration • u/Spaceyyyyyyyy64367 • 6h ago
How I synthesize cafe sounds in Python: grinders, espresso hiss, cup clinks (no samples)
Just shipped a 242-sound cafe & kitchen pack for a cozy pixel game, all synthesized in Python, no recordings. A few of how they work:
Coffee grinder: filtered noise bursts at a fixed rate, with a slow amplitude ramp for spin-up and spin-down.
Espresso machine hiss: band-passed noise with a resonant peak that drifts up in frequency, plus short pressure-release bursts.
Milk steaming: layered noise bands modulated by a slow LFO, so the pitch of the "shriek" wanders instead of holding one tone.
Cup clinks: a short plucked-string physical model (like a tiny bell), pitch-shifted per cup size, with a fast decay.
Cash register & coin drops: sine clusters for the bell, a short noise burst for the mechanism.
Happy to go deeper into the synthesis chain for any of these :)
The pack (242 sounds, part of a 1,209-sound library): https://aquumgifts.itch.io/cozy-sfx-complete