Bone Crack

How it's made

Source

sudden release of bending stress in a brittle bone shell: a 0.25 ms attack, 9–19 ms band-limited noise fracture, followed by irregular secondary microfractures.

Body

tissue-loaded bone has short, inharmonic modes near 330, 790, 1510 and 2830 Hz, scaled by size, with T60 of 24–85 ms. A low, broad 190–430 Hz pressure knock supplies weight without a cinematic sub drop or a hollow wooden ring.

Layers

the main fracture dominates; 4–12 smaller fractures occupy 8–258 ms with diminishing strength. A quiet 600–2600 Hz granular friction bed joins the fragments.

Spectral movement

the fracture low-pass falls from 6–10 kHz to 2.5 kHz in 28 ms; later fragments become darker as stored stress is exhausted. No reverb or distortion.

Envelope

immediate onset, main body below audibility in about 110 ms, splinter cluster ends by 280 ms; a smooth safety envelope closes 200 ms after the spread setting.

Variation

independent seeded streams vary each burst, mode tuning by 4 percent, and fragment timing/strength. Size changes mode scale and damping; brittleness changes transient bandwidth; fragmentation and spread change the fracture cascade.

Presets

hairline is small and tight; heavy is low and compact; splintered is bright and granular; compound separates two strong failures within one short injury cue.

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