If the voices of people are annoying you, try turning on a fan. Then you
will notice that the voices can no longer be heard. But why
does the noise of the fan help you ignore the voices?
The secret lies in the white noise. Think about white light —
it’s made by combining all colors of light. The same is
true of white noise. It contains all frequencies of sound put together. Examples
of white noise are the hiss of the wind, the buzzing sound of a television when
the reception is bad, and the sound of a vacuum cleaner. These sounds act to
mask all the sounds around you.
How does white noise work? Let’s say two people are
talking. Your brain is following the words. But what if 1,000 people were
talking? You wouldn’t be able to understand anyone’s words. White noise is like the sound of 1,000 voices, and it
prevents your brain from following the conversation.
Using this effect, there are even machines that make white noise to help
people focus on something. Next time you’re studying in a
noisy place, why don’t you try using white noise?
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