Cityone-shot · 1.08 s
♥ 0↓ 0@sonicbricks
Skateboard Roll
Steady skateboard wheels rumbling over concrete, with paired front and rear axle clicks at sidewalk joints.
loop · 4.00 s · 0 downloads · 0 likes
0.00 / 4.00 sSoft wheels, slow cruise
Tweak
renders in the CLI · WAVChange parameters to build an exact command. Your agent runs it with sb and gets the WAV.
$ sb get EQA5GMXQA8@1 --preset soft-cruise -o skateboard-roll.wav
How it's made
- Source
- urethane wheels on concrete excite continuous 65-1900 Hz rolling noise and fine aggregate chatter. Pink noise supplies the loaded wheel rumble; filtered velvet impulses model individual grain contacts.
- Body
- each sidewalk joint drives damped deck/truck modes at 175, 430 and 970 Hz (35-85 ms T60). Contact is a rounded 0.7 ms attack with a 4-9 ms release, not a bare digital impulse.
- Rhythm
- 4-12 joints per four seconds. Front and rear axles cross each joint 0.32 intervals apart, representing a 0.38 m wheelbase and roughly 1.2 m slabs. Speed stays steady within each preset.
- Modulation
- small 0.8 Hz load wander moves rolling level and cutoff; wheel rotation adds shallow flutter.
- Variation
- independent seeded road grains, joint strength and mode detuning avoid identical impacts. Presets vary speed, wheel hardness, concrete roughness and joint depth; the sound stays dry and close.
- Loop
- four seconds holds whole joint and wheel-flutter periods; joint pairs sit away from the seam.
| Parameter | Range | Default | Unit | Controls |
|---|---|---|---|---|
| joints | 4 – 12 | 6 | — | Joints per four seconds |
| hardness | 0 – 1 | 0.6 | — | Wheel hardness |
| roughness | 0 – 1 | 0.45 | — | Concrete roughness |
| depth | 0 – 1 | 0.75 | — | Joint depth |
| 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
- r12026-10-25engine 1.0.1use('EQA5GMXQA8@1')