Steel Ship Deck Footstep

How it's made

Source

a heavy boot loads a welded steel deck; heel and forefoot arrive 65-110 ms apart. Low-passed noise contacts rise in 2-4 ms and release over 14-35 ms; no hard digital impulse.

Body

flexural plate modes at approximately 137, 218, 317, 463, 683, 973 and 1471 Hz. Inharmonic modes have T60 of 0.12-0.48 s; higher modes die first under boot and weld damping.

Layers

broad 60-200 Hz structural thud, a hollow 110-220 Hz under-deck resonance, and a restrained 0.5-2 kHz sole scrape following the forefoot. No room reverb is baked in.

Envelope

the first loading is dominant; the weaker forefoot re-excites the same plate. A 0.53-0.64 s safety fade leaves silence at the end of the 0.72 s one-shot.

Variation

named random streams vary contact noise, heel-to-toe delay, force and tuning by 1.5%. Size shifts plate and cavity pitch; damping shortens modes; hardness brightens the contact.

Presets

rubber boot is dark and tight, heavy tread is low and weighty, hollow hatch rings longer, and brisk heel is a faster, firmer contact on a smaller stiff plate.

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