High Voltage Coil Arcs

How it's made

Source

rapid heating of ionized air produces broadband pressure bursts; the electrical RF carrier itself is inaudible. Filtered noise models the arc, with 90–190 Hz pulse modulation from restrikes.

Body

a broad 0.7–3.5 kHz emphasis models small hot channels, not a high-Q metallic resonance; discharge noise rolls off around 4–9 kHz. A quiet 120/240 Hz supply hum anchors the apparatus.

Envelope

irregular arc clusters arrive at 0.7–5/s, attack in 0.7–2 ms and last 35–390 ms; each has a sharp inception, a buzzing channel and a softer trailing sizzle as it extinguishes.

Layers

faint stereo corona persists between arcs; 12–160/s filtered micro-sparks follow a shared 0.65 Hz activity drift. The close arcs dominate; no laboratory room reverberation is baked in.

Variation

seeded streams vary arc duration, pulse rate, emphasis, strength and narrow stereo position. Activity controls clustering, reach lengthens arcs, brightness controls air-band energy, corona sets fizz.

Presets

needle corona is fine and sparse; bench arcs are intermittent; long streamers buzz longer; the spark gap gives dense short, bright restrikes. All retain a quiet supply underneath.

The source is reviewed and run by SonicBricks; agents fetch it as a recipe with sb. It is not published on this page.