(betterexplained.com)

247 points pykello | 3 comments | 02 Dec 25 06:50 UTC | HN request time: 0.001s | source

1. analog31 ◴[07 Dec 25 17:39 UTC] No.46183459[source]▶

My only quibble is that the article is about the discrete Fourier transform.

replies(1): >>46184846 #

2. shash ◴[07 Dec 25 20:29 UTC] No.46184846[source]▶

>>46183459 (TP) #

It’s usually easier to explain the dft. and easier to do a periodic function than a totally arbitrary sequence.

replies(1): >>46187554 #

3. krackers ◴[08 Dec 25 02:14 UTC] No.46187554[source]▶

>>46184846 #

I've actually found the opposite, it's easier to conceptually understand the continuous FT, then analyze the DTFT, DFT, and Fourier Series as special cases of applying a {periodic summation, discrete sampling} operator before the FT.

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An Interactive Guide to the Fourier Transform