Bellsone-shot · 3.30 s
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Tubular Bell
A single orchestral tubular bell strike with a bright mallet attack and a long, slowly beating tail
one-shot · 3.92 s · 0 downloads · 0 likes
0.00 / 3.92 sBright reveal
Tweak
renders in the CLI · WAVChange parameters to build an exact command. Your agent runs it with sb and gets the WAV.
$ sb get RTFN48FHVB@1 --preset bright-reveal -o tubular-bell.wav
How it's made
- Source
- a hard rawhide or wooden mallet striking the capped top of a hanging brass tube. The strike is a 1–3 ms broadband click plus a ~15 ms band-passed "clank" of the cap; a harder mallet is brighter and shorter.
- Body
- the tube rings in free-free flexural modes with frequencies ∝ (n + 0.5)². Relative to the strike tone (mode 5 = 1) the modes sit at 0.21, 0.40, 0.67, 1, 1.40, 1.86, 2.39, 2.98, 3.64, 4.37, 5.2. Modes 4–7 are ≈ 2 : 3 : 4.2 : 5.6, so the ear hears a virtual pitch well below the strike tone.
- Decay
- low modes ring longest (up to `decay`, several seconds), high modes fade in a fraction of it, so the attack is bright and metallic and the tail turns pure and mellow (spectral movement).
- Beating
- a real tube is slightly asymmetric, so each mode is a pair of modes a fraction of a hertz apart; the sustain shimmers slowly (`beating`, 0.2–2 Hz).
- Variation
- `rng` mistunes the modes by up to ±0.2 % and varies the click; presets change tube size, mallet hardness and ring time.
| Parameter | Range | Default | Unit | Controls |
|---|---|---|---|---|
| pitch | 260 – 1000 | 523 | Hz | Pitch |
| decay | 1.5 – 7 | 4.5 | s | Ring time |
| brightness | 0 – 1 | 0.55 | — | Brightness |
| beating | 0 – 1 | 0.4 | — | Beating |
| strike | 0 – 1 | 0.6 | — | Mallet hardness |
| 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('RTFN48FHVB@1')