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Split-Flap Departures Board

Columns of plastic letters cascade through a mechanical update and settle into individual final clicks.

kind
texture
length
8.00 s
downloads
0
id
FT6N5NWS69

texture · 8.00 s · 0 downloads · 0 likes

0.00 / 8.00 sMP3 preview · Worn station mechanism
Preset
Spectrogram of “Split-Flap Departures Board”, Worn station mechanism preset
Spectrogram of “Split-Flap Departures Board”, Worn station mechanism preset: time left to right, frequency bottom to top.
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Free for commercial use. No attribution needed.

Tweak

renders in the CLI · WAV

Change parameters to build an exact command. Your agent runs it with sb and gets the WAV.

Command
$ sb get FT6N5NWS69@1 --preset worn -o split-flap-departures-board.wav

How it's made

Source
motor-driven split-flap cells advance at 11-22 flips/s; each pawl makes a 0.4-4 ms noise tick.
Body
damped plastic plates colour the tick at 650-1800 Hz with broad, short-lived resonances. A moving plate adds 16-28 ms of filtered air/friction, darkening from 4.8 kHz toward 1.7 kHz.
Layers
a second, softer plate-seat impact follows 9-16 ms later; no room reverb or tonal motor whine.
Envelope
columns start successively over 0.3-1.2 s, flutter for 2.5-6 s and stop independently; the last isolated flips settle by 7.3 s. Longer renders repeat fresh update cycles every 8 s.
Variation
seeded column speed, stop time, plate tuning, timing jitter and contact strength; pan follows each column, making the update travel left to right rather than spray randomly.
Presets
compact four-cell display, dense sixteen-cell board, uneven worn mechanism and muted panel.
Parameters
ParameterRangeDefaultUnitControls
columns4 – 1610—Active columns
speed11 – 2216—Flips per second
cascade0 – 10.65—Cascade stagger
wear0 – 10.2—Mechanism wear
softness0 – 10.3—Plate damping
spread0 – 10.75—Board width
seedint1—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.

Credits and creation history (JSON)
Revision history1
  1. r12026-10-25engine 1.0.1use('FT6N5NWS69@1')

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