Timeline for Intuition for sidelobes in FFT
Current License: CC BY-SA 4.0
16 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Mar 11, 2024 at 2:52 | history | edited | Dan Boschen | CC BY-SA 4.0 | added 19 characters in body |
| Oct 2, 2023 at 11:09 | history | edited | Dan Boschen | CC BY-SA 4.0 | Removed bold on “intuitive” |
| Jun 5, 2020 at 16:54 | history | edited | Dan Boschen | CC BY-SA 4.0 | added 264 characters in body |
| Jun 2, 2017 at 11:16 | comment | added | Dan Boschen | See this post where I explain the similarity between homodyning the signal (rotating the signal) and homdyning the coefficients (rotating the coefficient, which instead moves the filter to the signal: dsp.stackexchange.com/questions/41228/… | |
| Jun 2, 2017 at 11:11 | comment | added | user6363 | or you want to say is N*N matrix of twiddle factor is an bank of filter... which is capable to extract the different frequency content in each sample of signal ? | |
| Jun 2, 2017 at 11:09 | comment | added | user6363 | continue from above ....and if we have different cordinate w.r.t to different frequency basis then we can have estimate how much frequency component is in each sample ... what i have got is right ? | |
| Jun 2, 2017 at 11:09 | comment | added | user6363 | You mentioned a term "we are effectively rotating the signal," .. but what i have studied & understand is that in Orthogonal transform of N signal samples with twiddle factor matrix.. instead of signal we use to rotate the basis vectors. If we have divided 2*Pi frequency space into 10 points (i.e doing 10 point dft) then we will rotate through different basis vector(represent different frequencies) & found cordinate of point(i.e particular sample) with respect to different basis vector fourier.eng.hmc.edu/e102/lectures/orthogonalTransform/….. | |
| Jul 13, 2016 at 12:23 | history | edited | Dan Boschen | CC BY-SA 3.0 | cleaned up awkward wording |
| Jul 13, 2016 at 12:17 | history | edited | Dan Boschen | CC BY-SA 3.0 | cleaned up awkward wording |
| Jul 13, 2016 at 12:12 | history | edited | Dan Boschen | CC BY-SA 3.0 | edited body |
| Jul 13, 2016 at 12:06 | history | edited | Dan Boschen | CC BY-SA 3.0 | minor grammatical correction |
| Jul 12, 2016 at 16:51 | history | edited | Dan Boschen | CC BY-SA 3.0 | added 1 character in body |
| Jul 12, 2016 at 14:21 | history | edited | Dan Boschen | CC BY-SA 3.0 | added 75 characters in body |
| Jul 12, 2016 at 12:12 | vote | accept | CatsLoveJazz | ||
| Jul 12, 2016 at 3:42 | history | edited | Dan Boschen | CC BY-SA 3.0 | deleted 3 characters in body |
| Jul 12, 2016 at 3:37 | history | answered | Dan Boschen | CC BY-SA 3.0 |