Power-Up Hum

A machine charges with a rising coil whine and airflow swell, then settles into a steady electrical hum.

one-shot · 2.50 s · 0 downloads · 0 likes

0.00 / 2.50 sMP3 preview · Air-cooled supply

Preset

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Free for commercial use. No attribution needed.

Tweak

renders in the CLI · WAV

Change parameters to build an exact command. Your agent runs it with sb and gets the WAV.

Command

$ sb get 3TX4Z8Y0TK@1 --preset air-cooled -o power-up-hum.wav

Source: an inverter-fed machine energizes; coil vibration sweeps from 230 Hz to 1.45 kHz, overshoots by 8 percent, then locks to a steady carrier. Three sine partials model the coil whine.
Body: magnetostriction produces 100-120 Hz hum with second, third and fifth harmonics; broad housing bands at 260 and 720 Hz colour the fan noise without long ringing.
Envelope: a 35 ms soft onset precedes a 0.8-1.5 s charging swell; carrier and airflow ease back as regulation locks, leaving a stable hum until a 200 ms editorial fade ends the 2.5 s shot.
Layers: low electromagnetic hum, rising coil whine and filtered pink fan turbulence; no impact or beep.
Modulation: small 2.7 Hz carrier flutter decays during lock; fan blade amplitude modulation follows accelerating speed, while the hum retains 0.7 percent supply ripple. Energy above 6 kHz is filtered.
Variation: seeded coil tuning varies by 0.6 percent and fan noise is independent; macros set hum frequency, carrier, spin-up time and airflow. Presets cover a cabinet, compact drive, heavy plant and air-cooled equipment, with different spectra, charging times and settled layer balances.

Parameters
Parameter	Range	Default	Unit	Controls
hum	80 – 160	120	Hz	Hum frequency
carrier	750 – 2300	1450	Hz	Coil carrier
charge	0.8 – 1.5	1.15	s	Charge time
air	0 – 1	0.4	—	Cooling airflow
weight	0 – 1	0.55	—	Hum weight
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.

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