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What Is the Fourier Transform?

(www.quantamagazine.org)
474 points rbanffy | 3 comments | | HN request time: 0.407s | source
1. antimora ◴[] No.45133886[source]
I think the best explanation and understanding I received about Fourier Transform was from studying linear algebra.

The Fourier Transform equation essentially maps a signal from the time domain onto orthogonal complex sinusoidal basis functions through projection.

And the article does not even mention this. =)

replies(2): >>45134013 #>>45134375 #
2. esalman ◴[] No.45134013[source]
Almost every paragraph of this article says the same thing but in different ways.
3. chamomeal ◴[] No.45134375[source]
Best explanation I got was from 3 blue 1 brown! It’s what you said, but with nice visuals