Timeline for please give the reason why every notation for DFT is valid?
Current License: CC BY-SA 3.0
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| Aug 21, 2014 at 12:13 | comment | added | David | Although Notation 4 isn't quite the normal, you can relate it to the other definitions by letting $m=-n$ and then rewriting the equation. Essentially it swaps what are normally the time domain and the frequency domain. You can also show that the DFT(DFT(x(n)))=x(-n). That is, if you take the DFT of the DFT you end up with a time reversed sequence. | |
| Aug 20, 2014 at 18:15 | history | edited | robert bristow-johnson | CC BY-SA 3.0 |
added 200 characters in body
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| Aug 20, 2014 at 18:10 | history | answered | robert bristow-johnson | CC BY-SA 3.0 |