Change parameters to build an exact command. Your agent runs it with sb and gets the WAV.
Command
$ sb get ER912PBHXE@1 --preset curse -o dark-curse.wav
How it's made
Source
a ritual spell in three layers. A reversed swell (dark noise whose band opens and level grows until it is cut at the moment of casting), a cluster of dissonant bowed-like tones, and a sub-bass heartbeat.
Body
the tone cluster is a root, a minor-second partner (beating at 5-15 Hz) and a tritone partner, built from saw and triangle oscillators under a low-pass that closes from 2.4 kHz to 400 Hz while the pitch sinks by an octave. The throb is a 48-70 Hz sine with a faint 2nd harmonic, gently saturated so that it reads on small speakers; a slow vibrato makes the cluster waver.
Envelope
the swell rises over the first ~40% of the length on an exponential ramp and drops in ~15 ms (the reverse of a decay). Tones start at the cast, fall in pitch on an exponential curve and fade out. The throb pulses at about 2.5 Hz with a slow decay and ends with the tones.
Variation
`rng` shifts tuning by up to 1%, the vibrato phase and the noise streams; macros set length, pitch, dissonance, darkness and throb weight; presets range from a quick hex to a long, heavy doom.
Parameters
Parameter
Range
Default
Unit
Controls
length
1 – 3.5
2
s
Length
pitch
160 – 700
330
Hz
Pitch
dissonance
0 – 1
0.6
—
Dissonance
darkness
0 – 1
0.6
—
Darkness
throb
0 – 1
0.6
—
Throb
swell
0 – 1
0.6
—
Swell
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.