Bitcrush Noise

How it's made

Source

broadband electronic noise sampled by a coarse digital clock (700–8000 Hz), then held between updates and quantized to 2–8 bits. Sample-hold images and sinc notches supply aliased grit.

Layers

a dominant converter plus an independent clock at 0.503 times its rate, mixed at 18%, models a second data bus. Its darker bandwidth fills the body without adding a pitched oscillator.

Body

the input extends to 12 kHz so downsampling deliberately aliases; a low-Q output low-pass at 3.5–11 kHz controls ultrasonic fizz. A 65 Hz high-pass removes DC and unnecessary sub-bass.

Envelope

continuous six-second sustain, with only 3% cyclic gain movement; the renderer crossfades the loop seam. No burst envelopes, isolated clicks, room tail or resonant whistles are added.

Modulation

a six-second clock cycle selects five descending/ascending sample-rate steps; transitions change clock speed without resetting its phase. Motion depth ranges from a fixed clock to 38%.

Variation

named random streams drive the two converters. Presets span a dark two-bit bus, midrange terminal grit, bright fine static and a slowly stepping corrupted buffer.

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