Wooden Cart on Cobblestones

How it's made

Source

wooden rims strike rounded cobbles at 2.5-6 contacts/s; 3-7 ms filtered noise excites wood. A rear-wheel contact follows 65-110 ms later, with a softer, differently tuned impact.

Body

wheel and chassis modes at 145-220, 370-565, 680-1030 and 1160-1760 Hz decay in 35-140 ms. Loose boards rebound after 18-48 ms with lighter, higher wooden modes and 12-50 ms decay.

Axle

loaded dry bearing friction excites a wavering 210-460 Hz fundamental and weak harmonics; 0.24-0.46 s rounded creak envelopes recur once per four cobbles, with filtered friction noise.

Envelope

continuous subdued rolling friction under irregular paired bumps, without a start or stop. Nominal 8 s loop contains whole contact cycles; the renderer crossfades the stochastic seam.

Variation

seeded timing jitter, impact force, tuning and board rebound; speed changes contact rate, load lowers chassis modes, roughness brightens strikes, looseness increases board and axle movement.

Presets

everyday paving, slow loaded wagon, brisk light handcart and a loose old cart on rough stones. Dry close perspective, modest wheel separation, no environmental reverberation.

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