Courtesy of Amazon.
Marpac Dohm
When something is endorsed by the National Sleep Foundation, you know it’s got to be good. The Dohm masks unwanted noise and creates a calming sound environment to help you get a full night’s rest. The interior fan creates a calming sound of rushing air that actually can combat loud exterior noise.

Marpac Dohm-DS All-Natural White Noise Sound Machine, White, $49.93, Amazon.