Rain on leaves
Bright filtered noise with a soft high shelf. Reads as rainfall on foliage — good for reading.
Four rooms. No downloads.
Every sound here is synthesised in your browser from filtered noise — no audio files, no streaming, no buffering. Press play, leave the tab open, come back when the agent is done.
Brown noise
Deeper, softer, no sharp edges at all. The classic focus blanket for loud thoughts.
Ocean waves
Low noise with a slow swell, so the room breathes. Best for winding down.
Deep hum
A low drone with a barely-there pulse. Feels like a quiet machine room.
45%
Headphones recommended. Audio starts only after you press play, which is the browser's rule, not ours.
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Why noise helps you think
Steady broadband sound masks the unpredictable small noises — a chair, a door, a notification — that your brain cannot help but check. Because nothing in it changes, there is nothing to listen for. That is the whole trick, and it is why rain has been the unofficial soundtrack of libraries for a century.
Tips that actually matter
- Quieter than you think. The right level is “barely there”, not “cinema”.
- Pick one room and keep it. Switching flavours every five minutes defeats the masking.
- Combine with a timer: 25 minutes of sound, then actually stand up. The break is the point.