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Thankfully, sound machines are simple devices. Most look like fancy alarm clocks with a few more dials and buttons and switches to access their various sounds and features. If you’re ready to upgrade ...

Sleep experts say using a white noise machine can improve sleep. Here, editor-tested picks from Hatch, HoMedics, YogaSleep and more.

Getting a good night’s sleep is hard. A third of all American adults report getting less than the daily recommended amount of sleep nearly every night. Too little noise, and the mind starts to race.

Whether they’re emitting natural white noise, the sound of a gently flowing brook, or bird song, sound machines can offer a calming effect and help many people drop off to sleep. Sound machines are ...