White, pink, and brown noise oscillators add different spectral textures for atmospheric layering or percussion

Noise generators in synthesizers produce random signals with different frequency distributions: white noise has equal energy per frequency (bright, hissing); pink noise has equal energy per octave (warmer, natural-sounding — closer to the energy distribution of music and nature); brown noise has even more low-frequency energy (dark rumble). Serum 2 also includes a ‘color’ noise generator and a Gaussian-ish ‘ger’ variant. Applied to synthesis: white noise is the classic cymbal/breath layer; pink works for atmospheric pads; brown for rumble or post-apocalyptic texture. The built-in LPF/HPF on the noise oscillator lets you carve the noise into a useful band before it reaches the main filter.

Examples

Serum 2: color noise → white → filter to only high frequencies → adds presence to a lead. Ger noise at low level with LPF → adds analog grit to techno sounds.

Assessment

Compare three noise colors (white, pink, brown) by soloing the noise oscillator and listening. Describe the perceived brightness of each. Then use the noise HPF to create a narrow band of noise and identify what it adds to a pad sound.