Cardboard Box Drop

How it's made

Source

an empty corrugated box hits a floor. A 9-22 ms filtered noise contact excites its walls; a softer 45-110 ms paper flex burst follows as the panels buckle and recover.

Body

a broad air cavity at 105-235 Hz and irregular panel modes at 1.0, 1.59, 2.36 and 3.73 times 175-345 Hz decay in 65-230 ms. High modes die first; no metallic ringing or room reverb is added.

Envelope

the first impact is followed by a weaker bounce at 160-290 ms and a settling contact at 1.62 times that gap. A fading 0.6 s flap rustle bridges the contacts; output fades out by 0.86 s.

Layers

low-passed contact, damped wall modes, broad cavity and band-limited paper friction are mixed dry. The friction cutoff falls from 4.8-7.8 kHz to 1.6 kHz as the box stops moving.

Variation

named random streams vary contact texture, mode tuning by 3 percent and bounce gaps by 7 percent. Size changes cavity and wall pitch; hardness changes attack; bounce changes restitution.

Presets

small carton is bright and quick; large carton is low and hollow; soft landing suppresses rebounds and treble; corner landing emphasizes papery panel flex and a distinct second contact.

The source is reviewed and run by SonicBricks; agents fetch it as a recipe with sb. It is not published on this page.