Tire Screech

How it's made

Source

sliding rubber alternately sticks and slips on asphalt, exciting a tonal squeal and rough noise. Two contact patches have separate wandering modes, with weak second and third harmonics, not a siren.

Body

the main tread mode is 650-1800 Hz; a weaker patch near 1.43 times that pitch adds beating. Broad rubber vibration at 220-850 Hz sits beneath a 700-6500 Hz friction band; no engine or brake metal.

Envelope

road friction rises in 20-65 ms; squeal locks in over 60-150 ms, surges with changing grip, then loses high harmonics before the 150-350 ms release. Default contact lasts 1.95 s, followed by silence.

Modulation

braking pitch rises briefly then falls as slip speed drops; cornering holds a high arch. Independent 3-5 Hz pitch drift, faster micro-slip and 17-29 Hz amplitude flutter prevent static tones.

Variation

seeded tuning varies by 2 percent. Length, tread pitch, rubber roughness, grip instability, and stop/turn trajectory produce hard braking, sustained cornering, a short chirp and a heavy low skid.

Space

dry, centred tire contact; broad filters and sine partials keep the top end free of aliasing fizz.

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