Change parameters to build an exact command. Your agent runs it with sb and gets the WAV.
Command
$ sb get QMFTHKCD89@1 -o time-running-out-loop.wav
How it's made
Source
an urgent countdown clock. Each beat is a small escapement-like click (1–2 ms noise burst) that excites a short metallic ring (3–7 kHz, 20–40 ms); every fourth beat is an accented, lower "tock".
Body
a heartbeat-like sub thump under each beat, a sine falling from ≈ 95 Hz to ≈ 52 Hz in 80 ms with a 150 ms decay; a quiet tritone pad (≈ 196 Hz and ≈ 277 Hz, soft saw, low-passed) supplies the tension.
Envelope
ticks and thumps are strictly periodic at 3–6 beats per second, so the 4 s loop holds a whole number of beats; the pad swells and relaxes once per loop (0.25 Hz) while its filter opens and closes.
Spectral movement
the pad cutoff and the tick brightness follow the same 4 s cycle, so the loop breathes without a seam.
Variation
`rng` varies every tick's level and tuning by a few percent; presets change the beat rate, the thump weight, the pad tension and the metallic size.
Parameters
Parameter
Range
Default
Unit
Controls
beats
3 – 6
4
—
Beats per second
pulse
0 – 1
0.6
—
Low pulse
tension
0 – 1
0.5
—
Tension pad
size
0 – 1
0.4
—
Tick size
accent
0 – 1
0.5
—
Accent strength
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.