Timeline for Which antialiasing filter before equispaced sampling
Current License: CC BY-SA 3.0
3 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Dec 16, 2013 at 10:01 | comment | added | Deve | If the analog filter has a cut-off frequency of $f_\mathrm{s}'/2$ you do not need an additional digital filter before downsampling. If its cut-off frequency is $f_\mathrm{s}/2$, you generally do need a digital filter before downsampling. | |
| Dec 16, 2013 at 9:57 | comment | added | Léo Léopold Hertz 준영 | There is analog filters in the hardware. So the existing digital signal does not have any frequencies over f_s. So I think I do not need apply any filters before downsampling. Is this true? | |
| Dec 16, 2013 at 8:57 | history | answered | Deve | CC BY-SA 3.0 |