Inside this noteWhat a sound machine can and can't do about city noiseSound type: real fan, digital, and the color of the noiseVolume, size and placementTimers: just to fall asleep, or all nightPrice tiers: what to pay for and what to skipHealthTaped to the doorWhite Noise Machines for City Sleepers: How to Choose Sound Type, Size and TimerFan or digital, white or brown noise, a timer or all night: which features matter when the noise is coming from traffic, sirens and neighbors, and what each price tier gets you.Health7 min read6 sources