eelbrain.powerlaw_noise

eelbrain.powerlaw_noise(dims, exponent, seed=None)[source]

Gaussian \((1/f)^{exponent}\) noise.

Parameters:

  • dims (NDVar | Dimension | Sequence[Dimension]) – Shape of the noise.

  • exponent (float) –

    The power-spectrum of the generated noise is proportional to \(S(f) = (1 / f)^{exponent}\)

    • flicker/pink noise: exponent=1

    • brown noise: exponent=2

  • seed (int | RandomState) – Seed for random number generator.

Notes

Based on colorednoise.