-1
$\begingroup$

Is there a discrete signal which isn't discrete in time (rather, discrete in at least one other thing which isn't time)?

If so please share a typical example.

$\endgroup$
4
  • $\begingroup$ Well, technically... $\endgroup$ Commented Mar 22, 2022 at 9:53
  • $\begingroup$ As far as I am aware, when someone refers to a signal being discrete, it means that it has been discretised in time. This means that there can't be a discrete signal which is not discrete in its temporal variable. Of course, this is based on this definition... $\endgroup$
    – ZaellixA
    Commented Mar 22, 2022 at 11:10
  • $\begingroup$ Sure. Every signal that's periodic in time is discrete in frequency. $\endgroup$
    – Hilmar
    Commented Mar 22, 2022 at 11:26
  • $\begingroup$ @Hilmar periodic in time = discrete in frequency. Hmm a nice way to put it. It appears often, and hence not continuously frequent. Okay, I think I get it. $\endgroup$
    – yaraklis
    Commented Mar 22, 2022 at 11:59

1 Answer 1

1
$\begingroup$

Any signal that repeats in time will be discrete in frequency (meaning have non-zero values only at discrete intervals). The time domain waveform can be continuous or discrete which is independent of its Fourier Transform of being continuous or discrete. I expand on this with examples at this similar post here.

Reaching here, but we could consider antenna arrays as an example using signals with a source that is discrete in space.

$\endgroup$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.