Cash Register Drawer

How it's made

Source

a spring latch releases, a hammer strikes a small steel bell, and a loaded drawer runs out. Noise bursts of 1-5 ms excite the latch, case and coins; pink friction follows runner velocity.

Body

the bell has paired modes at 1, 1.48, 2.06, 2.71 and 3.83 times 1450-2250 Hz, with 0.18-1.05 s T60. The drawer case adds 160-760 Hz modes with 55-130 ms T60 at release and stop.

Envelope

latch at 0 s, bell at 32 ms, slide from 65 ms to 0.49-0.79 s, then a padded stop. Upper bell modes decay first; all layers taper to silence by 1.43 s without added room reverb.

Motion

runner friction sweeps from 2.4 kHz toward 650 Hz as the spring loses speed; soft contact pulses interrupt the slide. Coins bounce during acceleration and after the stop, at irregular intervals.

Variation

seeded timing, mode tuning, contact strength and narrow stereo positions vary independently. Size lowers case modes, travel lengthens motion, coins sets the load, and bell sets its pitch.

Presets

compact till is quick and high; antique is heavy and slow; loaded tray rattles densely; quiet counter has a damped bell, sparse coins and a gentle stop. All retain the complete action.

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