So, does white noise help you sleep? It can do, but it's important to be aware of how loud you're listening to it! How loud should white noise be, then? Ensure you're listening at levels no higher than 50 decibels, which is roughly equivalent to the level of a quiet refrigerator humming or a quiet conversation.
Another reason why white noise promotes sleep lies in the nature of our brain: it thrives on stimulation. Nightly noises tend to activate our brain, disrupting our rest. A consistent white noise serves as a satisfying stimulus, preventing overexcitement when sudden sounds occur at night.
Fielder [11] has shown that white noise at 4dB SPL is just audible for people in either a home listening or professional monitoring environment, even with environmental noise levels of 50dB SPL. This compares with maximum sound levels between 105dB and 112dB SPL (corresponding to digital full scale) for listening levels in domestic or review
By Peter Dockrill (selimaksan/iStock) If you're one of the 50 million Americans who experience the constant ringing of tinnitus - or you just live in a noisy house or apartment and find it hard to get a good night's sleep - you might be familiar with white noise generators.
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what db should white noise be