Soundlull

Mix your own ambient soundscape

Blend rain, fire, ocean, brown noise and more into the perfect background for focus, sleep, or calm. Free, no sign-up — it runs entirely in your browser.

presets
rain
thunder
ocean
fireplace
forest
wind
café
white noise
brown noise
pink noise
night
birds

White, brown & pink noise generate real audio in your browser. Loop-based channels play once their audio files are added.

One calm tab for focus, sleep, and relaxation

Soundlull is an ambient sound mixer. Tap any tile to start a channel, then layer several together and balance them with the per-channel volume sliders until the mix feels right. Turn on Oscillation to let active channels gently breathe so loops never feel repetitive, and set a sleep timer to fade everything out after 15, 30, or 60 minutes.

White, brown, and pink noise are generated live in your browser using the Web Audio API — there's nothing to download and no file to load. Your active mix is saved to the page address automatically, so you can bookmark it or share the link and the exact soundscape comes back.

Browse every sound

Rain Sounds Steady rainfall to mask noise and settle a busy mind. Thunderstorm Sounds Distant rolling thunder over rain — cozy and grounding. Ocean Waves Slow rolling waves with a long, calming rhythm. Fireplace Sounds Crackling fire warmth — cozy focus and wind-down. Forest Sounds Leafy woodland ambience with a gentle breeze. Wind Sounds Soft, airy wind — a clean low-detail backdrop. Coffee Shop Sounds The murmur of a busy café — chatter, cups, espresso. White Noise Equal energy across frequencies — a steady masking hiss. Brown Noise Deep, soft rumble — the trending focus & ADHD favorite. Pink Noise Balanced, natural-sounding noise — softer than white. Night Sounds Calm nighttime ambience — crickets and still night air. Bird Sounds Morning birdsong — bright, fresh, gently uplifting.

Frequently asked questions

What is brown noise?

Brown noise (also called red noise) has much more energy in the low frequencies and rolls off the highs, giving it a deep, soft rumble like a steady waterfall or distant surf. Many people find it warmer and less harsh than white noise.

What's the difference between white, pink, and brown noise?

They differ in how energy is spread across frequencies. White noise is flat and bright, pink noise is balanced and natural, and brown noise is deep and bass-heavy. White can sound hissy, pink sounds like soft rain, and brown sounds like a low rumble. Try each and use whichever you find most comfortable.

Can I leave Soundlull playing all night?

Yes. Sounds loop seamlessly and will keep playing as long as the tab is open. If you'd rather it stop on its own, use the sleep timer to fade everything out after 15, 30, or 60 minutes.

Can I save or share my mix?

Yes. Your active sounds and their volumes are stored in the page's web address, so you can bookmark a mix or copy the link to share it. Reopening the link restores the exact mix and volumes.