Brown noise
Deep, rumbling noise — like a waterfall or the inside of a plane. A favourite for sleep and focus, especially for people with ADHD.
Brown noise
Nothing playing
Ready-made mixes
Mix your own
Tip: press Space to play/pause. Keeps playing with your screen off on most phones. Add this site to your home screen to use it like an app.
🎯 Focus timer
Pomodoro: focus with noise on, then take a short break. A soft chime marks each switch.
25:00Focus · round 1
Brown noise vs white noise
White noise has equal energy at all frequencies, so it sounds bright and hissy. Brown noise drops by 6 dB per octave, so most of its energy is in the bass — it sounds deep and warm. If white noise feels harsh, brown noise is usually much easier to listen to for hours.
Best uses
- Falling asleep and staying asleep
- Focus, studying and deep work
- Masking low-frequency noise like traffic or a neighbour's music
Frequently asked questions
What is brown noise?
Brown (or Brownian) noise has much more energy in the low frequencies than white noise. It sounds deep and soft — like a strong waterfall, heavy rain on a roof or an airplane cabin.
Why do people with ADHD like brown noise?
Many people with ADHD say brown noise quiets their busy thoughts and makes it easier to focus. Research is still limited, but it's a safe, free thing to try.
Is it safe to sleep with noise on all night?
For adults, yes at a moderate volume — keep it quieter than a normal conversation (below about 50–60 dB). For babies, place the device at least 2 meters (7 ft) from the crib and keep the volume low, as recommended by the American Academy of Pediatrics.
Does it work with my phone screen off?
Yes on most phones: the sound is played like music, so it keeps going when the screen locks. If your phone stops it, keep the screen on with low brightness, or add the page to your home screen.