Alarmsone-shot · 4.05 s
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Evacuation Whoop
A dry industrial evacuation horn repeating harsh rising whoops with smooth releases and silent resets.
loop · 4.00 s · 0 downloads · 0 likes
0.00 / 4.00 sFactory floor
Tweak
renders in the CLI · WAVChange parameters to build an exact command. Your agent runs it with sb and gets the WAV.
$ sb get Z1J1FX5XES@1 --preset factory-floor -o evacuation-whoop.wav
How it's made
- Source
- an electronic evacuation sounder driving a compression horn; seven phase-locked harmonics model its buzzy diaphragm, with odd partials strongest and a quiet band-limited air/grille noise.
- Body
- broad horn bands at 1.45 and 2.8 kHz (Q 0.85 and 1.1) colour the moving harmonic ladder. A 160 Hz high-pass removes ineffective diaphragm excursion; a 5.2-7.8 kHz low-pass limits fizz.
- Envelope
- 2-8 rising whoops per 4 s. Each cycle attacks in 3.5% of its period, rises for 74%, releases over 12%, then rests for 14%; pitch resets only while the diaphragm is silent.
- Modulation
- a slightly convex 360-900 Hz default sweep and 27 Hz, 0.12% pitch flutter model the drive. The harmonic brightness opens with pitch; no room reverberation is baked into the dry horn.
- Variation
- seeded tuning varies by +/-0.2%; cycle count, base pitch, sweep ratio and edge control distinguish standard, low slow, urgent and compact high-frequency sounders. All have whole cycles.
| Parameter | Range | Default | Unit | Controls |
|---|---|---|---|---|
| cycles | 2 – 8 | 4 | — | Whoops per four seconds |
| pitch | 280 – 620 | 360 | Hz | Starting pitch |
| rise | 1.7 – 2.7 | 2.5 | — | Sweep ratio |
| edge | 0 – 1 | 0.65 | — | Horn edge |
| 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('Z1J1FX5XES@1')