Eerie Drone

How it's made

Source

imagined bowed bass plates under continuous friction; additive sine modes carry the vibration, while two independent pink-noise streams model the irregular rubbing contact rather than an impact.

Body

a 46-68 Hz anchor supports a minor-second pair and inharmonic modes at 2.03, 2.17 and 3.41 times its frequency. Upper modes are weaker; broad friction resonances move between roughly 180 and 800 Hz.

Envelope

sustained pressure never closes; 12 s and 6 s swells redistribute energy between modes. There are no strikes or fast tremolo. The renderer crossfades the loop boundary.

Modulation

independent smooth pitch wander stays below 0.25 percent; close mode pairs beat at 0.12-0.55 Hz. Slow spectral opening follows pressure, without sharp high-Q whistles or bright fizz.

Layers

a centred low anchor, moderately spread dissonant plate modes, and quiet stereo friction; high-pass at 30 Hz removes subsonic energy and a 1600 Hz low-pass keeps the drone dark and restrained.

Variation

seeded phases and wander change the rubbing pattern. Presets select buried bass pressure, exposed minor-second tension, a hollow friction bed, or denser upper plate modes.

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