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Sunday, October 23, 2005

How to Use White Noise

White noise is: A sound containing a blend of all the audible frequencies distributed equally over the range of the frequency band. White noise is analogous to white light which contains all the colors of the rainbow together. The term “white noise” as used in this article will be applied a little looser to include a host of sounds (waterfall, rain and brook as examples) used for blocking out unwanted sounds.

Because white noise contains most sound frequencies, it is commonly used to mask other sounds. If you are in a hotel and voices from the room next-door are leaking into your room, you might turn on a fan to drown out the voices. The fan produces a good approximation of white noise. How does this "white" sound work and why does it mask out other noise?

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