As such, I can't guarantee that these machines are safe for babies - and neither can their manufacturers. I looked for a follow-up study to determine whether white-noise machines have addressed this flaw within the last five years, but was unable to find anything. A 2014 study from the American Academy of Pediatrics (opens in new tab) found that most white-noise machines exceeded recommended decibel levels for infants, and that the noise can "affect hearing, speech and language development." However, based on my research, I am not convinced that white-noise machines are universally safe for babies. As such, you might be expecting a recommendation for an infant-centric device on this page. Many people buy white-noise machines to help lull babies to sleep. Your sound library is potentially as big as the Internet itself, and you can customize plenty of timers and alarms to go along with it. That means you can buy a white-noise recording, or play one on YouTube - or even ask Google Assistant to find one for you. Using a smart speaker allows you to leverage your existing smartphone apps to broadcast anything you want. You may not own a Google Home Mini Smart Speaker, but you probably do have the thing that powers it: a smartphone. There's an argument to be made that the best device for any given application is the one you already own. These sounds may indeed help you to sleep, but they are not technically white noise. Certain models even mimic the sounds of a roaring ocean or a crackling fire. As such, many "white noise" machines listed here generate a gentler "pink noise" instead. White noise generates sound on a variety of frequencies - some of which are actually unpleasant to the human ear. While the term white noise colloquially refers to any low, looping noise that helps people focus on a task at hand (like sleeping), that's not the scientific definition of the term. Not all white-noise machines generate real white noise. The five we chose have the best reputations overall, and represent a variety of price points and use-cases.
After narrowing down our initial selection, we read customer reviews on Amazon, Reddit and manufacturer websites to see how our choices held up under real-world conditions. To select the best white-noise machines, Tom's Guide researched reviews from a number of tech and sleep sites, including The Wirecutter (opens in new tab), Wired (opens in new tab), Sleep Advisor (opens in new tab) and Verywell Health (opens in new tab).
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