Alarmsone-shot · 4.05 s
♥ 0↓ 0@sonicbricks
Security Keypad Countdown
Single-pitch piezo beeps accelerate into a long steady arming confirmation tone.
one-shot · 6.00 s · 0 downloads · 0 likes
0.00 / 6.00 sLow register panel
Tweak
renders in the CLI · WAVChange parameters to build an exact command. Your agent runs it with sb and gets the WAV.
$ sb get YBJ8RDYK9T@1 --preset low -o security-keypad-countdown.wav
How it's made
- Source
- a clocked security-panel piezo driver at 1.25-2.8 kHz; every pulse and final tone share one pitch.
- Body
- a dominant sine plus weak phase-locked second and third harmonics represent disc nonlinearity. Upper harmonics settle in 25 ms; a 6 kHz low-pass represents the grille, without room reverberation.
- Envelope
- 6 ms rounded startup, 65-105 ms short gates and 16 ms release; the disc rings down for 12 ms. The final 0.75-1.35 s gate sags by 12 percent before a 45 ms release, signalling completed arming.
- Timing
- 10-16 short pulses fill 4.7 s; linearly shrinking intervals end at 18-45 percent of the first. A same-pitch long tone follows at 4.7 s; the default including silent tail is approximately 6 s.
- Variation
- rng sets one stable device tuning offset within 0.15 percent, never random timing or melody. Presets change register, pulse density, acceleration, gate width and harmonic edge for different panels.
| Parameter | Range | Default | Unit | Controls |
|---|---|---|---|---|
| pitch | 1250 – 2800 | 2200 | Hz | Panel pitch |
| edge | 0 – 1 | 0.38 | — | Piezo edge |
| count | 10 – 16 | 12 | — | Short pulses |
| endRatio | 0.18 – 0.45 | 0.22 | — | Final interval ratio |
| gate | 0.065 – 0.105 | 0.085 | s | Short gate |
| finalLength | 0.75 – 1.35 | 1.15 | s | Armed tone length |
| 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('YBJ8RDYK9T@1')