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Sub Sampling (mander.xyz)

submitted 1 week ago by [email protected] to c/[email protected]

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[-] [email protected] 15 points 1 week ago

I legit would love to discuss sub-Nyquist sampling. I worked in the field for a few years.

[-] [email protected] 5 points 1 week ago

Can you eli5 nyquist?

[-] [email protected] 5 points 1 week ago

Instead of actually explaining it, here's how I like to remember it: If you are measuring something that produces a perfect sine wave, and you can't take measurements faster than 30 Hz, then you can't definitively prove that the sine wave repeats faster than that. No matter how many data points you collect, the actual frequency could always be double what your measurements suggest.

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this post was submitted on 06 Jul 2024

306 points (96.4% liked)

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