SoundMasker
Press play to start the sound
Air conditioner A soft start: brown noise, rain, a forest brook, and a few birds. Save it to keep your own version.

White noise 34

EqualizerLow to high

Fan 60

Real room fans, recorded running. A steady rush of air, the most common sleep sound there is.

Plane cabin 12

A recorded airplane cabin in flight. A broad, even roar that many people already associate with falling asleep while traveling.