From white to pink noise, by Peter Bogers

video with mono sound, 0’52 min., 2020.
Please watch fullscreen.

from white to pink noise
Both white and pink noise are considered broadband noises. Both of them are made of all frequencies that are audible to humans, so all frequencies anywhere between 20 and 20000 hertz. But the way their signal power is distributed among all frequencies radically differs.
White noise has to do with energy and it is equal energy for each frequency. All frequencies across the human audible spectrum are represented by equal amounts of energy.
Pink noise is all about octaves and pink noise has equal energy per octave. Octave bands are how we hear music and sounds. When we hear, we hear in octaves.