system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What’s the difference between white noise and pink noise?
gpt
Former audio engineer here.
White noise = Equal energy of all frequencies that we can hear (approx 20hz to 20,000 hz). White noise has a high pitched, hissy sound. 

Pink noise = Equal energy per OCTAVE of frequency.  An octave is a doublling of frequency, so there is a 20 hz difference between 20 hz and 40 hz (one octave)…Between 1,000 hz and 2,000 hz (also an octave) there is a 1000 hz difference. There are more frequencies per octave the higher you go, therefore there is more energy at those higher ranges in white noise.  Pink noise has a less hissy, more rumbly sound.