Change parameters to build an exact command. Your agent runs it with sb and gets the WAV.
Command
$ sb get 24QDFXT22E@1 --preset brittle-paver -o concrete-slab-drop.wav
How it's made
Source
a concrete slab lands flat; distributed contacts spread a 3 ms onset over 24 ms, producing a broad 120 Hz-5 kHz slam rather than a point striker or a pitched falling sweep.
Body
inharmonic bending modes at 64, 103, 169, 267, 431 and 697 Hz scale with slab size; T60 falls from 0.75 s to 0.16 s. Broad 45-220 Hz pressure noise supplies ground-coupled boom.
Fracture
staggered 1-3 kHz noise cracks in the first 90 ms and short mineral modes on chips.
Envelope
3 ms contact rise, 0.2 s main slam, 0.5-1.1 s boom; loose grit settles by 1.8 s. High frequencies decay first; a finishing fade reaches zero at 1.94 s with no baked-in reverb.
Events
16 uneven chip contacts between 0.08 and 1.55 s lose strength as debris settles.
Variation
seeded contact timing, chip pan and mode detuning; mass lowers modal frequencies, hardness opens contact bandwidth, fracture adds cracks/grit, and tilt delays a secondary slap.
Parameters
Parameter
Range
Default
Unit
Controls
mass
0 – 1
0.65
—
Slab mass
hardness
0 – 1
0.65
—
Ground hardness
fracture
0 – 1
0.55
—
Edge fracture
tilt
0 – 1
0.15
—
Landing tilt
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.