Brown noise
A deep, soft rumble. Tap a card to hear it, open it to use it.
Brown noise is noise with the high end rolled far down: a low, even rumble, like a distant waterfall or wind outside a warm room. Lots of people find it easier to live with than white noise.
In the spaces above it sits far below the other sounds, filling the silence without taking over.
Questions
Is brown noise proven to help focus?
No. Nobody has studied brown noise for focus yet; the research so far is on white and pink noise, with small effects that depend on the person. Choose it because it feels good. More on the research.
Brown noise vs pink noise?
Both are softer than white noise. Pink noise keeps a little more of the high end and sounds like steady rain; brown noise is deeper still.
Is it free?
Yes. Brown noise and every space on this page are free, in your browser.