UIloop · 4.00 s
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Card Flip
A card or tile flipping over: a quick flutter of air ending in a papery snap
one-shot · 0.25 s · 0 downloads · 0 likes
0.00 / 0.25 sStiff plastic
Tweak
renders in the CLI · WAVChange parameters to build an exact command. Your agent runs it with sb and gets the WAV.
$ sb get 9EFWFF3SBJ@1 --preset plastic -o card-flip.wav
How it's made
- Source
- a stiff card turning over in the fingers. Air squeezed past the edge is a short burst of pink noise; at the turning point the card flexes and snaps flat, a 1–3 ms broadband tick from the paper fibres.
- Body
- the flutter is band-passed noise (Q ≈ 1.4) whose centre rises 1.2 → 4.5 kHz as the card speeds up, then falls as it slows. The snap excites two damped paper modes (≈ 2.6 kHz and ≈ 1.9 × that, 15–30 ms) and a soft low "pat" (300–380 Hz, 25 ms) from the card landing on its back.
- Envelope
- flutter swells over ~60 ms with a fast 28–40 Hz flap ripple in the level that dies out; the snap lands at about 55 % of the length; everything is over within ~0.2 s.
- Variation
- `rng` shifts the snap time by ±4 %, mistunes the paper modes ±3 % and varies the flap phase, so repeated flips differ slightly. Stiffness moves the mode pitch, snap sets the click level.
| Parameter | Range | Default | Unit | Controls |
|---|---|---|---|---|
| speed | 0 – 1 | 0.5 | — | Speed |
| snap | 0 – 1 | 0.6 | — | Snap |
| flutter | 0 – 1 | 0.6 | — | Flutter |
| brightness | 0 – 1 | 0.5 | — | Brightness |
| stiffness | 1600 – 4200 | 2600 | Hz | Card stiffness |
| direction | -1 – 1 | 0 | — | Stereo travel of the flip |
| seed | int | 1 | — | Variation, reproducible |
The source is reviewed and run by SonicBricks; agents fetch it as a recipe with sb. It is not published on this page.
Revision history1
- r12026-10-24engine 1.0.1use('9EFWFF3SBJ@1')