Change parameters to build an exact command. Your agent runs it with sb and gets the WAV.
Command
$ sb get WHP5FE2NSE@1 --preset tile-buckles -o duffel-bag-drop.wav
How it's made
Source
packed canvas meets the floor over 6-15 ms; low-passed noise models compressed filling and air.
Body
broad, damped 65-240 Hz pressure bands carry weight, not a pitched bass drop. Wood adds a short 175/340 Hz floor response; tile adds a restrained 1.6 kHz contact, carpet absorbs both.
Envelope
the primary thud dies in 180-300 ms; filling shifts in a weaker contact 90-170 ms later.
Fabric
three overlapping 250 Hz-4 kHz friction lobes slump and darken over 0.15-0.70 s as folds settle.
Hardware
four diminishing contacts at 65-370 ms excite inharmonic 2.1/3.3/4.9/6.4 kHz buckle modes; each has a 1 ms rounded attack and 50-170 ms decay, with upper modes damped fastest.
Variation
seeded timing, tuning and strength vary independently. Weight changes pressure and damping; slump changes fold timing, hardware controls buckle activity, and the four presets vary the floor/load.
Space
dry and close, with a narrow spread on cloth and hardware; all motion fades before 0.95 s.
Parameters
Parameter
Range
Default
Unit
Controls
weight
0 – 1
0.7
—
Packed weight
firmness
0 – 1
0.45
—
Contact firmness
slump
0 – 1
0.55
—
Fabric slump
hardware
0 – 1
0.5
—
Loose buckles
floor
carpet · wood · tile
wood
—
Floor
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.