What pink noise is
Pink noise loses 3 decibels of power for every octave it rises. Because each octave up spans twice as many frequencies, that fall exactly balances out, and every octave ends up carrying the same power.
Our hearing works roughly in octaves, so pink noise sounds even from top to bottom in a way white noise doesn’t. It is the noise sound engineers use to test speakers for the same reason.
Lalai’s pink noise is generated, not recorded, and built to loop with no seam. If you want it deeper still, try brown noise.
| Made by | Synthesised for Lalai |
|---|---|
| Rights | Owned by Lalai; no third-party material |
| Here | A 20-second loop, crossfaded so it turns without a seam |
| In Lalai | With a subscription |
The colours of noise, side by side
Noise colours describe how a sound’s power is spread from low frequencies to high. Each of these plays free on its own page.
| Colour | How its power is spread | What it sounds like |
|---|---|---|
| White | Even power at every frequency | A bright, even hiss, like an untuned radio |
| Pink (this page) | Falls 3 dB per octave, so every octave carries equal power | A softer, fuller hiss, close to steady rain |
| Brown | Falls 6 dB per octave, so the low end dominates | A deep rumble, like a waterfall heard from a distance |
| Green | Pink noise with a broad lift centred near 500 Hz | A rounded, middle-weighted wash, like distant surf |
Pair it with
In the app you can layer up to five sounds and set each one’s level. These go well with pink noise:
- White noise. Brighter, with more at the top.
- Brown noise. Deeper, with the top end rolled away.
- Rain on a window. Real rain sits close to pink noise in colour.
All night, with the screen off
A browser tab usually stops playing when your phone locks or the tab goes to sleep. In the Lalai app, pink noise keeps playing with the screen off and fades out on the timer. You can layer up to five sounds, put slow original music underneath, and keep everything on your phone for nights with no signal.
Free to try for seven nights. Pink noise comes with a subscription, $24 a year or $3 a month, and new subscribers get seven nights free. The mixer, the timer and a free sound in every category are free for good. No ads, no account, no analytics.
Listening safely
- Start low. Set your device volume low before you press play, and turn it up only as far as you need. The loops here are mastered quietly on purpose.
- Not too close. A phone on the bedside table is closer to your ear than it seems. Avoid falling asleep in earphones at volume.
- Use the timer. It fades the sound out rather than stopping it dead, so the quiet arrives gradually.
Lalai is for relaxation and enjoyment. We don’t claim that this or any sound changes how you sleep, and if poor sleep goes on for weeks, please see a doctor. More on protecting your hearing.
