# The Fourier Transform, explained in one sentence

http://www.r-bloggers.com/the-fourier-transform-explained-in-one-sentence/

From the site:

The daunting formula involves imaginary numbers and complex summations, but Stuart’s idea is simple. Imagine an enormous speaker, mounted on a pole, playing a repeating sound. The speaker is so large, you can see the cone move back and forth with the sound. Mark a point on the cone, and now rotate the pole. Trace the point from an above-ground view, if the resulting squiggly curve is off-center, then there is frequency corresponding the pole’s rotational frequency is represented in the sound. This animated illustration (click to see it in action) illustrates the process:

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