Internal Brown Noise Generator

[Soniclife]

White noise:
Contains all frequencies, but the frequencies are different loud. The high frequencies are louder and seen at 25db to the lowest frequency.

Pink noise:
Contains all frequencies of the audible range, all the same loud, linear, so to speak.

Brown noise:
Is just as multifrequential but the volume distribution is inversely proportional to the white noise, the drop in level to the high frequencies is 6dB / octave.

This is different from what Wikipedia says, e.g. https://en.m.wikipedia.org/wiki/White_noise