How to use pink noise
- Pink is selected. Press Play and set a gentle volume.
- Use the sleep timer for a gradual fade-out, or download a seamless 60-second loop.
What makes noise "pink"?
Pink noise has equal energy in every octave, which means its power falls by about 3 dB each time the frequency doubles. Compared with white noise it has less hiss and more body, closer to steady rain, rustling leaves or a waterfall heard from a distance. Because human hearing also works in octaves, pink noise sounds balanced, which is why audio engineers use it to set up and measure speakers and rooms.
Small studies have found that pink noise, especially when timed to deep sleep, may improve sleep stability and even memory in some people, though the research is still developing. For everyday use, the main benefit is the same as other noise colours: masking distracting sounds so the brain can relax or concentrate. This generator uses the Paul Kellet filter method to shape random noise into a pink spectrum, live in your browser.
FAQ
Is pink noise better than white noise for sleep?
Many people find it more pleasant because it is less hissy.
How is pink noise used in audio?
To measure and tune speakers, because each octave has equal energy.
Does it work offline?
Yes, once the page has loaded.