Noise Colors Explained
Noise colours describe how energy is spread across frequencies. Each has a different sound and use.
White noise
Flat per hertz, bright hiss. Best for masking and analyser testing.
Pink noise
Flat per octave, balanced. Best for speaker setup and many sleepers.
Brown noise
Strong bass, soft rumble. Popular for focus and sleep.
Blue, violet and grey
Blue and violet emphasise treble; grey is shaped to sound equally loud everywhere.
Which is best for sleep?
Whatever sounds least intrusive to you at a low level; many choose pink or brown. See the side-by-side comparison in white vs pink vs brown noise.
Related tools
Frequently Asked Questions
Q.Can noise harm hearing?
Only when loud for long periods.