Force Field Hum

The steady hum of an energy shield: a low drone with slow swell and a crackle of electric sizzle

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0.00 / 8.00 sMP3 preview · default

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 JCMY5R32EC@1 -o force-field-hum.wav

Source: a shield is an energy field sustained by a power core. Three parts: a mains-like low drone, a thin plasma shimmer riding on it, and corona discharge, the sizzle of tiny sparks leaking from the surface.
Body: the drone is two slightly detuned saw/triangle oscillators at about 55 Hz (beat of 0.25 Hz) plus a sine sub, low-passed near 300 Hz so only the lower harmonics speak. The shimmer is a pair of sines near its 4th and 6th harmonic (about 220 and 330 Hz, detuned apart) and a band-passed noise veil at 1.2 kHz.
Envelope: steady by design. A slow swell (0.5 Hz, 4 cycles per 8 s) pulses the drone amplitude by about 25 %, a 0.25 Hz sweep opens and closes the drone filter, and a random drift gates the sizzle so sparks arrive in clusters, never as a machine-gun pattern.
Sizzle: sparse unipolar impulses (crackle) high-passed at 3.5 kHz and band-limited around 6.5 kHz, independent in left and right so the field feels wide; its level follows the "Sizzle" parameter.
Variation: `rng` detunes the oscillators by a few cents and drives the drifts; presets change the drone pitch, swell speed, shimmer amount and sizzle level (idle core, charged shield, overload, distant barrier).

Parameters
Parameter	Range	Default	Unit	Controls
pitch	40 – 90	55	Hz	Drone pitch
swell	0.25 – 1.5	0.5	Hz	Swell rate
shimmer	0 – 1	0.4	—	Shimmer
sizzle	0 – 1	0.4	—	Sizzle
warmth	0 – 1	0.4	—	Drone brightness
spread	0 – 1	0.7	—	Width
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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