Show HN: Interactive Essay on Signals, Sampling and the Fourier Transform

#1

Post by jackschaedler » Mon, Mar 02, 2015, 1:26 PM UTC

Show HN: Interactive Essay on Signals, Sampling and the Fourier Transform
jackschaedler.github.io

Re: Show HN: Interactive Essay on Signals, Sampling and the Fourier Transform

#2

Post by deitcher » Mon, Mar 02, 2015, 2:22 PM UTC

I wish they could have done things like this when I was learning signals and transforms as an undergrad. But interactive didn't really exist in the early 90s.

Re: Show HN: Interactive Essay on Signals, Sampling and the Fourier Transform

#3

Post by pdh » Mon, Mar 02, 2015, 4:29 PM UTC

Really nicely done. Thanks for sharing!

Re: Show HN: Interactive Essay on Signals, Sampling and the Fourier Transform

#4

Post by zwieback » Mon, Mar 02, 2015, 4:43 PM UTC

Like!! It took me a while to chew through signals and FT back in school (before the web) so I really appreciate how this is bringing browser-based animations to the general public. It's a lot easier to understand that way.

Re: Show HN: Interactive Essay on Signals, Sampling and the Fourier Transform

#5

Post by streptomycin » Mon, Mar 02, 2015, 4:54 PM UTC

Normally I'd just upvote and move on, but this is really fucking good. For example, I wish I could have seen something like that "Sine Wave Aliasing" page when I was learning this stuff, would have saved me a lot of confusion.

Re: Show HN: Interactive Essay on Signals, Sampling and the Fourier Transform

#6

Post by erc11 » Mon, Mar 02, 2015, 5:25 PM UTC

This is fantastic. I've been looking for something exactly like this to learn DSP. My brain learns best with kinds of resources. Well done!

Re: Show HN: Interactive Essay on Signals, Sampling and the Fourier Transform

#7

Post by Pluizer » Mon, Mar 02, 2015, 5:43 PM UTC

I registered an account just to say thanks, this is brilliant! Exactly what I was looking for.

Re: Show HN: Interactive Essay on Signals, Sampling and the Fourier Transform

#8

Post by jackschaedler » Mon, Mar 02, 2015, 5:48 PM UTC

Pluizer wrote: post #7

I registered an account just to say thanks, this is brilliant! Exactly what I was looking for.

Wow, that really means a lot. Thank you! Really glad to hear that you are finding it useful. Please send along your feedback and questions if anything doesn't make sense or is poorly communicated in the text/visualizations.

Re: Show HN: Interactive Essay on Signals, Sampling and the Fourier Transform

#9

Post by jackschaedler » Mon, Mar 02, 2015, 5:49 PM UTC

streptomycin wrote: post #5

Normally I'd just upvote and move on, but this is really fucking good. For example, I wish I could have seen something like that "Sine Wave Aliasing" page when I was learning this stuff, would have saved me a lot of confusion.

Thanks! Let me know if there are other topics you'd like covered, or areas that need more explanation.

Re: Show HN: Interactive Essay on Signals, Sampling and the Fourier Transform

#10

Post by gdubs » Mon, Mar 02, 2015, 5:49 PM UTC

This is an _incredibly_ well-crafted piece of work. I mean -- my god -- the pressure wave animation? [1]

1: http://jackschaedler.github.io/circles-sines-signals/sound.h...