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    Coming into this video with no previous understanding of a fourier transform, I now understand it well enough to use. I’ve essentially added an advanced tool to my repertoire that will aid me in my trade - I’m sure there will come a moment when I need to differentiate signals in a computer system.

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      This video had the same effect on me. I’ve found myself doing a lot of DSP for audio in the last few years. I’ve read other explanations of how the transform works, but just came away more frustrated. Finally internalizing this—via 3Blue1Brown—was a huge level-up.