Change parameters to build an exact command. Your agent runs it with sb and gets the WAV.
Command
$ sb get WVKJFHD344@1 --preset deep-sand -o dry-sand-footstep.wav
How it's made
Source
dry beach grains slip and collide under a foot; filtered noise supplies fine friction, with 170-340 irregular grain clusters per second, each softened over 1-13 ms.
Body
yielding sand absorbs the strike; broad noise bands at 90-350 Hz model sole compression, without a pitched cavity or a hard heel click. The forefoot follows the heel by 65-120 ms.
Envelope
heel pressure rises in 12 ms; forefoot pressure in 22 ms. Grain friction peaks twice, then falls over 180-300 ms as displaced grains settle. Output fades fully by 450 ms.
Spectral movement
the contact band opens from 1.4 to 3.6 kHz, then darkens below 1.2 kHz; an overlapping 600-2400 Hz scrape follows the rolling foot. No room reverberation is added.
Variation
seeded grain timing, grain colour, strength and contact spacing vary each step. Weight changes compression, grain size changes texture, drag changes displaced sand, pace changes roll.
Presets
barefoot is soft and fine; walking is compact; deep sand is heavy and slow; toe drag has a lighter body and a longer, brighter sand displacement.
Parameters
Parameter
Range
Default
Unit
Controls
weight
0 – 1
0.5
—
Foot pressure
grain
0 – 1
0.45
—
Grain coarseness
drag
0 – 1
0.35
—
Sand displacement
pace
0 – 1
0.55
—
Roll speed
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.