Module rnd 

Deterministic pseudo-random scalar fields for modulation.

Everything here is seeded + reproducible — the same t and seed always yield the same value. Used as organic, non-periodic modulation inside lfo(|t| …) to avoid the robotic feel of pure sine LFOs.

Functions

brown_walk

Brownian walk — integrated noise. Drifts over time, no periodicity. step_hz controls speed of drift; scale its amplitude.

perlin1d

1-D Perlin-like noise (cubic interpolation between lattice points). Smooth, organic wobble for slow LFO modulation.

value_noise

Value noise — step-interpolated lattice. Same integer → same value. Sample rate ≈ freq transitions per second.