Arcane Explosion

How it's made

Source

a burst of raw magical energy released at once. A 3 ms band-passed noise crack is the onset, a pitch-dropping sine (4x root down to root over 0.25 s) is the pressure thump, and a stack of detuned saws on a root, fifth, octave and twelfth is the tonal core that makes the blast read as magic, not gunpowder.

Body

the tonal core runs through a low-pass that opens to 3-6 kHz in 15 ms and closes to 600 Hz over the decay; a few slightly inharmonic sine partials (x2.76, x5.4) ring behind it like a struck energy field.

Shockwave

pink noise band-passed by a centre that sweeps from 7 kHz down to 400 Hz in about 0.9 s, decorrelated left/right and widened, so the front of the blast seems to expand past the listener.

Sparkles

a Poisson cloud of short sine pings drawn from a pentatonic-like set (1-10 kHz), dense in the first 0.3 s and thinning to a few per second at the end; each ping decays 0.15-0.5 s and is panned randomly.

Envelope

crack and thump last under 0.3 s, the tone about 0.8-1.2 s, the shock 0.9 s, and the sparkle tail fades out smoothly; the final envelope guarantees a clean end.

Variation

`rng` shifts partial tuning, sparkle notes, timing, pan and strength; macros set power, pitch, sparkle density, shockwave amount and decay length.

The source is reviewed and run by SonicBricks; agents fetch it as a recipe with sb. It is not published on this page.