This module makes noise: a random signal with no clear pitch. It is the raw material for percussion (snare, hi-hat), breath, wind or waves, and a handy source of randomness to modulate other modules.
Outputs
- White: white noise. Every frequency has the same energy: the sound is bright and hissy, like a radio between two stations.
- Pink: pink noise. The energy drops by 3 dB per octave toward the highs, so each octave holds the same energy. It sounds more balanced and softer to the ear, close to a waterfall or rain.
Both outputs move between about −5 and +5 V. The noise is the same for every voice (a monophonic module).
Patch ideas
- Noise → VCF band-pass → VCA driven by a very short envelope: a percussion hit.
- Pink noise → VCF low-pass with its cutoff slowly swept by an LFO: the sound of waves.
- Noise → FM input of a VCO, with very little depth: a slightly unstable, more "analog" sound.
Try this in the inspector
Compare White and Pink on the spectrum. White noise gives a roughly flat curve; pink noise gives a curve that slopes steadily down toward the highs. On the scope, pink noise looks "slower": its fast wiggles are smaller.