UIloop · 4.00 s
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Refresh Snap Back
The rubbery release snap of a pull-to-refresh, with a quick pitch drop and one short bounce
one-shot · 0.30 s · 0 downloads · 0 likes
0.00 / 0.30 sLoose boing
Preset
Tweak
renders in the CLI · WAVChange parameters to build an exact command. Your agent runs it with sb and gets the WAV.
$ sb get AC80XB715G@1 --preset loose -o refresh-snap-back.wav
How it's made
- Source
- a stretched rubber band (the pull-to-refresh overscroll) let go. The release is a 1–4 ms band-passed noise tick, followed by the band's first flex mode snapping back: a sine that falls fast in pitch as the tension relaxes (≈ 600–1800 Hz down toward 150–700 Hz in 50–90 ms, exponential-like curve).
- Body
- soft rubber is lossy, so the tone is rounded with a tanh saturator (adds 2nd/3rd harmonics, a "boing" colour) and a low-pass that closes from ~5 kHz to ~700 Hz while the pitch falls; a faint thud (≈ 150 Hz) gives the settle some weight.
- Envelope
- attack under 1 ms, the main flex decays within ≈ 160 ms; a rebound at 75–105 ms is a smaller, shorter repeat of the same drop (15–65 % amplitude) and then it stops. Total ≈ 0.25 s.
- Variation
- `rng` mistunes the start pitch by ±3 % and the rebound timing by ±4 %; macro parameters control start pitch, snap speed, bounce amount and rubber tone; presets change tension, stiffness and rebound.
| Parameter | Range | Default | Unit | Controls |
|---|---|---|---|---|
| pitch | 600 – 1800 | 1000 | Hz | Start pitch |
| snap | 0 – 1 | 0.5 | — | Snap speed |
| bounce | 0 – 1 | 0.5 | — | Bounce |
| rubber | 0 – 1 | 0.5 | — | Rubber tone |
| drop | 0 – 1 | 0.7 | — | How far the pitch falls during the snap |
| 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('AC80XB715G@1')