Timeline for Why is it a bad idea to filter by zeroing out FFT bins?
Current License: CC BY-SA 3.0
6 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Aug 31, 2019 at 5:50 | comment | added | hotpaw2 | The resolution provided by an FFT is the length of it's window. Anything outside the FFT's window is not resolved as being inside the FFT's window. | |
| Aug 5, 2019 at 15:11 | comment | added | EdParadox | "FFT gives poor time resolution" FFT gives no time resolution, it's a spectral domain transform and so, like said afterwards, gives only information about frequency components of a signal. | |
| Apr 5, 2018 at 5:58 | comment | added | Itta Gouthami | however there are computational difficulties for very long signal to take fft and then ifft. To avoid zitters/ringing filtering of a signal has to be transit smoothly from pass band to stop band. | |
| Apr 5, 2018 at 5:50 | review | Late answers | |||
| Apr 5, 2018 at 10:50 | |||||
| Apr 5, 2018 at 5:35 | review | First posts | |||
| Apr 5, 2018 at 8:08 | |||||
| Apr 5, 2018 at 5:32 | history | answered | Itta Gouthami | CC BY-SA 3.0 |