Sneaker Floor Squeak

How it's made

Source

rubber tread alternately sticks and slips on polished timber; a pressure-dependent 1.2–2.6 kHz oscillation carries weaker second and third partials, irregular 45–95 Hz flutter and filtered friction.

Body

cushioned heel and forefoot contacts 42 ms apart excite a 95–150 Hz sole thump and a broad, heavily damped 420 Hz floor response; there is no baked-in gym reverberation.

Envelope

a 4 ms padded landing precedes a 12 ms squeal onset; pressure rises, briefly releases and grips again before a rounded 35 ms release. Friction lasts 170–380 ms; all output ends before 480 ms.

Modulation

pitch rises with loading, bends downward during sliding, then briefly rises on release. Smooth seeded jitter and unequal harmonic envelopes avoid a stationary electronic whistle.

Variation

seeded tuning varies by 3%, flutter speed and contact strength vary independently. Grip controls sliding time; pitch controls rubber stiffness; load balances landing against squeal.

Presets

toe chirp is light and high; pivot is a double-grip turn; skid is lower and breathier; hard stop combines a heavy landing with a brief bright friction chirp.

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