Change parameters to build an exact command. Your agent runs it with sb and gets the WAV.
Command
$ sb get TEG5HTS0Z1@1 --preset demolition -o wrecking-ball-impact.wav
How it's made
Source
a multi-tonne steel ball hits a concrete wall. The contact is a very short, hard crack (1–3 ms broadband noise) followed by the whole structure being driven at its lowest modes.
Body
a sub thump (a sine falling 75 → 35 Hz as the wall yields), a dull low-passed rumble of the slab (brown noise), and a few damped stone modes for the "concrete" colour.
Debris
after the hit, chunks and grit fall and clatter: dozens of tiny band-passed noise ticks and low tonal thuds whose density and level decay roughly exponentially over 1–1.8 s.
Chain
the pendulum chain whips taut and rattles: short bright metal-bar hits with irregular, slowing spacing that die away, starting just after the impact.