Change parameters to build an exact command. Your agent runs it with sb and gets the WAV.
Command
$ sb get K3M1VXPMB2@1 --preset fizzle -o spell-fizzle.wav
How it's made
Source
a charge of magical energy that fails to ignite. Three parts: a pitched energy tone that sags downward, a few weak sputters as the charge stutters, and a smoky hiss of leaking gas-like noise.
Body
the tone is a triangle plus a quiet sine an octave below, gliding from ~900 Hz to ~250 Hz with a slow wobble that widens as it dies; each sputter is a 20-60 ms pitched blip (also falling) with a noisy crackle on top, band-passed around 1.5-4 kHz. The hiss is pink noise through a band-pass that sweeps from ~3.5 kHz down to ~900 Hz, so it darkens like smoke settling.
Envelope
sputters start close together and spread out (gaps grow ~1.5x) while their level falls; the tone fades over ~0.7 s; the hiss swells for ~0.1 s and trails off past 0.8 s.
Variation
`rng` jitters sputter timing, strength, blip pitch, pan and the wobble phase; macros set how many sputters there are, how far the pitch falls and how smoky the hiss is.
Parameters
Parameter
Range
Default
Unit
Controls
sputters
1 – 9
5
—
Sputters
fall
0 – 1
0.6
—
Pitch fall
smoke
0 – 1
0.5
—
Smoky hiss
pitch
400 – 1800
900
Hz
Start pitch
length
0.5 – 1
0.8
s
Length
seed
int
1
—
Variation, reproducible
The source is reviewed and run by SonicBricks; agents fetch it as a recipe with sb. It is not published on this page.