Brown noise for sleep.

Noise for sleep comes in three flavors, and the difference is simple: how much low end. White noise is even across everything — hiss, like a television between channels. Pink noise tilts toward the bass: softer, rounder, more weight underneath. Brown noise goes further still, down to a low wash like wind moving through a house.

What matters for sleep is that the sound stays flat and steady, with nothing bright to snag your attention. That's why the lower noises work so well — the low end is what your ears settle into, and the sharp top edge that keeps you half-alert is simply gone.

Soft noise is our take on that family: softer than white noise, with more low end. It's the sound of a house at night with the heating on — a warm, even hum that sits behind your breathing rather than in front of it, and makes the whole room feel quieter than silence.

You'll know your kind of quiet within a night or two. Some people are white-noise people; most, once they hear the low end, aren't. It's playing above, one tap away. Give it a minute; the right noise is the one you stop noticing.