Sliding Glass Door

How it's made

Source

two loaded rollers crossing an aluminium track; pink noise at 55-650 Hz supplies the rumble, with 12-25 irregular contacts per travel and filtered 0.4-3 kHz friction from the weather seals.

Body

a rubber-mounted large pane has inharmonic modes near 310, 687, 1190 and 1930 Hz, damped in 45-130 ms; the frame adds broad 145 and 430 Hz resonances rather than a sustained glass chime.

Envelope

accelerate over the first 0.25 s, coast with wheel-load fluctuations, then decelerate; rolling ends near 1.45 s, a 14 ms padded stop excites a 90-170 Hz thud and brief settling rattle.

Movement

velocity raises the friction cutoff and contact rate; slowing separates the last contacts. Each contact has a 2-4 ms rounded attack; all layers are dry and the stop decays before 1.8 s.

Variation

seeded contact timing, strength and pane tuning; travel controls duration, wear controls roughness and rattles, mass lowers body modes, and stop controls the buffered end impact.

Presets

maintained rollers, loose worn track, a heavy insulated pane, and a brisk lighter closure.

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