A balanced, natural-sounding noise that mirrors how we actually perceive sound. Linked to improved memory consolidation during sleep.
No account needed · Free download for Mac
What is it
Pink noise reduces intensity as frequency increases, at a rate of 3dB per octave. This means each octave carries equal energy, producing a sound that humans perceive as balanced and natural — like steady rain, wind through trees, or a flowing river. Pink noise sits between the harshness of white noise and the deep rumble of brown noise, making it one of the most pleasant ambient noise types for both work and sleep.
Benefits
Pink noise matches how the human ear perceives loudness across frequencies, making it sound more even and comfortable than white noise over long listening sessions.
Research suggests that pink noise played during sleep may enhance slow-wave brain activity, which is associated with memory consolidation and deeper, more restorative sleep.
Pink noise works well for both focus and relaxation because its balanced profile is stimulating enough to mask distractions but gentle enough not to feel intrusive.
The natural roll-off of high frequencies in pink noise prevents the hissing quality that makes white noise tiring for some listeners over time.
Use cases
Research
A 2017 study in Frontiers in Human Neuroscience found that pink noise synchronized with slow-wave sleep oscillations improved memory recall by up to 26% in older adults. This research has made pink noise one of the most promising ambient sound types for cognitive health and sleep optimization.
Mix & Match
ZeroHz lets you mix multiple sounds with independent volume controls
Explore more
Pink Noise plus 18+ other ambient sounds, lofi music, and a built-in focus timer. All from your Mac menu bar.
No account needed · 2hr/day free · macOS only