Billow noise: like fbm, but each octave is folded to 2*abs(noise) - 1,
giving puffy, rounded, cloud-like lobes. Given a source in [-1, 1], returns a
value in [-1, 1].
Parameters
sample: (frequency:number)=>number
receives an octave frequency, returns the base noise scaled by it
Billow noise: like fbm, but each octave is folded to
2*abs(noise) - 1, giving puffy, rounded, cloud-like lobes. Given a source in [-1, 1], returns a value in [-1, 1].