Brown Noise vs White Noise vs Pink Noise

"Noise colours" describe the distribution of energy across sound frequencies. The differences are not just marketing — they produce genuinely different listening experiences and have different evidence behind them for sleep.

White Noise

Equal energy across all audible frequencies — like static or a fan. It is the most effective at masking sudden environmental sounds (a car horn, a door slam) because it "covers" the full frequency range evenly. Some people find it harsh or fatiguing over long periods because of its emphasis on higher frequencies.

Pink Noise

Reduces energy in higher frequencies relative to white noise, weighting more toward the lower-mid range — closer to steady rainfall or wind through leaves. Several sleep studies have found pink noise associated with deeper slow-wave sleep and improved memory consolidation compared to silence, making it a strong general-purpose choice.

Brown Noise

Even deeper than pink noise, brown noise emphasises low frequencies almost exclusively — like a rumbling waterfall or distant thunder. It is often the most soothing of the three for people sensitive to higher-pitched sounds, and is frequently reported as particularly effective for tinnitus sufferers, since it can mask the ringing frequency without adding harshness.

Which Should You Choose?

There is no single "best" — it depends on your environment and sensitivity. If you need to mask sudden loud noises (traffic, a noisy neighbour), white noise is most effective. For general sleep support and a calmer listening experience, pink or brown noise are usually preferred. Many people find brown noise easiest to fall asleep to, and white noise most effective at actually blocking disruptive sounds through the night.

Try all three — plus rain, ocean waves, fireplace, guitar and piano — for free with our Sleep Sounds Player. No downloads, no ads, mix two sounds together and set a sleep timer.