Sleep glossary
white noise
Updated
It often sounds bright and even, like static, a fan, or a steady hiss depending on the machine.
Plain-English definition
White noise is a steady sound profile that contains a broad spread of frequencies at similar intensity.
It often sounds bright and even, like static, a fan, or a steady hiss depending on the machine.
Why it matters
It can help mask everyday background noise, but comfort, volume, and speaker placement matter more than the label alone.
Buying relevance
Use this term as a practical buying clue, then check the current manufacturer wording, setup guidance, materials, and returns policy. It should not be treated as a medical claim or a guarantee of how a product will work for you.
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FAQs
Is white noise better than pink noise?
Not for everyone. Choose by comfort at a modest volume and by the sound profiles available on the device.