White noise vs brown noise

Q: Is brown noise better than white noise for sleep?

Many people prefer brown noise for sleep because it is soft and deep. White noise masks high-pitched sounds (voices, birds, beeps) more effectively. If voices wake you, try pink noise as a middle ground.

Q: Which is better for focus: white, pink or brown noise?

Studies on noise and attention mostly used white noise, but the best choice is the one you can tolerate for hours. Brown is easiest on the ears; pink covers speech well.

Q: What is the difference between pink noise and brown noise?

Both tilt toward the bass. Pink noise falls 3 dB per octave and has equal energy per octave; brown noise falls 6 dB per octave, so it is darker and rumblier.

Q: Why does white noise sound so high-pitched if all frequencies are equal?

Because higher octaves contain more frequencies. The top octave (10–20 kHz) alone holds about half of white noise's power.

Same randomness, different balance. White noise spreads power evenly across every frequency; brown noise piles it into the bass. Pink noise sits in between.

The short answer: choose brown noise for a soft, deep sound that covers low rumble and is easy to listen to for hours. Choose white noise when you need to cover higher sounds like voices and don't mind the hiss. Choose pink when you want a bit of both.

Use the octave chart to see why. Pick an octave, then listen to that slice alone.

Side by side

	White	Pink	Brown
Slope	0 dB/oct	−3 dB/oct	−6 dB/oct
Power in top octave (10–20 kHz)	≈50%	10%	<0.1%
Sounds like	Static, a hiss	Steady rain	Waterfall, cabin hum
Masks best	Voices, high sounds	Speech and general noise	Traffic, bass, footsteps
All-night comfort	Can feel harsh	Good	Very good

Shares are for the audible band 20 Hz–20 kHz split into ten octaves.

Which should you use?

Light sleeper with a snoring partner: brown or pink noise; snoring is mostly low and mid frequencies.
Open-plan office: pink noise at a level where nearby words blur.
Baby: white noise or a fan sound, quiet and away from the cot. See white noise for babies.
ADHD or deep work: brown noise first, then experiment. Read what the research says.

Want to hear every step in between? The noise colours slider morphs smoothly from brown through pink and white to violet.

Questions

Is brown noise better than white noise for sleep?

Many people prefer brown noise for sleep because it is soft and deep. White noise masks high-pitched sounds (voices, birds, beeps) more effectively. If voices wake you, try pink noise as a middle ground.

Which is better for focus: white, pink or brown noise?

Studies on noise and attention mostly used white noise, but the best choice is the one you can tolerate for hours. Brown is easiest on the ears; pink covers speech well.

What is the difference between pink noise and brown noise?

Both tilt toward the bass. Pink noise falls 3 dB per octave and has equal energy per octave; brown noise falls 6 dB per octave, so it is darker and rumblier.

Why does white noise sound so high-pitched if all frequencies are equal?

Because higher octaves contain more frequencies. The top octave (10–20 kHz) alone holds about half of white noise's power.