Pink Noise vs White Noise: Which Is Better for Sleep?
Pink noise white — White noise, pink noise, brown noise — which sound colour helps you sleep best? Our team explains the differences and the small-but-real evidence base for each.
Priya on our team uses pink noise nightly and James uses white noise. We disagree, and there’s data on both sides. Here’s the honest version.
The colours, plainly (Pink noise white)
| Colour | Sound character | What it sounds like |
|---|---|---|
| White noise | Equal energy across all frequencies | Static, hiss, untuned radio |
| Pink noise | Energy decreases at higher frequencies | Steady rain, a waterfall |
| Brown noise | Energy decreases more steeply at higher frequencies | Distant thunder, low ocean roar |
The evidence
White noise has the longest research history. Studies show it can reduce sleep-onset time and mask environmental noise (traffic, snoring, household sounds). The effect is real but modest.
Pink noise has more recent research, including a 2017 Northwestern University study showing it improved deep-sleep duration in older adults and improved memory consolidation. The mechanism appears to be entrainment with brainwave activity during deep sleep.
Brown noise has the thinnest evidence — anecdotal benefits in ADHD focus and some sleep applications, but no large clinical studies.
What you might pick
- Masking neighbour or street noise: White noise is most effective at covering a range of sounds.
- Improving sleep quality if you already sleep OK: Pink noise, based on the Northwestern study.
- Tinnitus relief: Brown noise often most preferred — lower frequencies match the perceived ringing better.
- Babies and toddlers: White noise (limited to ~50 dB and not too close to the cot).
Volume matters
Whatever colour you choose, keep it under 50 dB at the head of the bed. Loud, sustained noise (above 70 dB) over years can contribute to hearing damage. As a benchmark, normal conversation is around 60 dB.
How to actually try it
Spotify, Apple Music and YouTube all have hours-long pink and brown noise tracks. Try each for 3 nights and see which you wake feeling rested with. Smartphone apps like Calm and Headspace include all three. For a dedicated device, see our pick of white-noise machines.
Skip if
If you sleep better in silence, don’t introduce a sound source. Some people are noise-averse and the colour debate doesn’t apply. Earplugs or soundproofing the room (see our soundproofing guide) is the better path.
For independent guidance on sleep and wellbeing, the Sleep Health Foundation is a good starting point.
