UIloop · 4.00 s
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Undo Rewind
A brief backwards gesture: a descending reversed blip that swells quickly and cuts off, for undoing an action
one-shot · 0.35 s · 0 downloads · 0 likes
0.00 / 0.35 sNeutral
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 0NCQHHTWHD@1 --preset neutral -o undo-rewind.wav
How it's made
- Source
- a "reversed blip", the time-mirror of a soft UI tap. A normal blip is a sharp onset followed by a decaying ring; played backwards it is a swell that grows into a sudden stop. Pitch glides down to say "back".
- Body
- a sine fundamental gliding from `pitch` down 0.3-1.2 octaves (exponential sweep) with a triangle one octave up at 20-40 % level for presence; a band-passed noise layer (Q 3.5) follows the same downward sweep as the air/friction of the rewind and fades in with the tone.
- Envelope
- amplitude rises along a power curve (exponent 3, the mirrored exponential decay) for `length` seconds, then is cut in 8 ms: fast enough to read as a cut, slow enough to stay click-free.
- Variation
- `rng` detunes the start pitch by up to 2 % and decorrelates the noise; `sweep` sets the glide depth, `air` the noise share, `length` the swell time. Presets: neutral, soft low, bright short, airy tape.
| Parameter | Range | Default | Unit | Controls |
|---|---|---|---|---|
| pitch | 400 – 1800 | 900 | Hz | Start pitch |
| sweep | 0 – 1 | 0.55 | — | Sweep depth |
| length | 0.12 – 0.4 | 0.24 | s | Swell time |
| air | 0 – 1 | 0.35 | — | Air |
| brightness | 0 – 1 | 0.5 | — | Brightness |
| 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('0NCQHHTWHD@1')