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| Sub: Rigol's DHO800 Oscilloscope (Gibbs Effect & Aliasing Misunderstanding) |
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| nctnico:
--- Quote from: Mechatrommer on October 29, 2023, 02:11:35 pm --- --- Quote from: wasedadoc on October 29, 2023, 01:51:51 pm ---Here is some evidence that Gibbs ears are real and can be seen on the output of a passive analogue filter. --- End quote --- yes! i was about to sketch similar picture for Fungus to understand, but since you provided proven one, thanks! i didnt rule out the possibility of it existing... so thats why i asked for evidence. from picture its about 1us delay. mind to tell what filter is that? or if that feasible to put on DSO front end? --- End quote --- Again, what wasedadoc is showing are not Gibbs ears! |
| wasedadoc:
--- Quote from: nctnico on October 29, 2023, 02:13:46 pm --- --- Quote from: Mechatrommer on October 29, 2023, 02:11:35 pm --- --- Quote from: wasedadoc on October 29, 2023, 01:51:51 pm ---Here is some evidence that Gibbs ears are real and can be seen on the output of a passive analogue filter. --- End quote --- yes! i was about to sketch similar picture for Fungus to understand, but since you provided proven one, thanks! i didnt rule out the possibility of it existing... so thats why i asked for evidence. from picture its about 1us delay. mind to tell what filter is that? or if that feasible to put on DSO front end? --- End quote --- Again, what wasedadoc is showing are not Gibbs ears! --- End quote --- What are they then? |
| Mechatrommer:
--- Quote from: nctnico on October 29, 2023, 02:13:46 pm --- --- Quote from: Mechatrommer on October 29, 2023, 02:11:35 pm --- --- Quote from: wasedadoc on October 29, 2023, 01:51:51 pm ---Here is some evidence that Gibbs ears are real and can be seen on the output of a passive analogue filter. --- End quote --- yes! i was about to sketch similar picture for Fungus to understand, but since you provided proven one, thanks! i didnt rule out the possibility of it existing... so thats why i asked for evidence. from picture its about 1us delay. mind to tell what filter is that? or if that feasible to put on DSO front end? --- End quote --- Again, what wasedadoc is showing are not Gibbs ears! --- End quote --- dont be pedantic friend... if someone give your kid an elephant toy and they call it ohh its an elephant! and then you say, its not an elephant, elephant is in jungle, you screw it man.. ;) ok fine! it just looks like Gibbs ear, but not Gibbs ear... or else what proper term for it? ever-increasing-magnitude-apparently-seems-non-causal-ringing? cheers. |
| Fungus:
--- Quote from: Mechatrommer on October 29, 2023, 02:11:35 pm --- --- Quote from: wasedadoc on October 29, 2023, 01:51:51 pm ---Here is some evidence that Gibbs ears are real and can be seen on the output of a passive analogue filter. --- End quote --- yes! i was about to sketch similar picture for Fungus to understand, but since you provided proven one, thanks! --- End quote --- Those aren't Gibbs ears. (because the circuit is NOT ringing before the pulse occurs) |
| Mechatrommer:
--- Quote from: Fungus on October 29, 2023, 02:25:05 pm --- --- Quote from: Mechatrommer on October 29, 2023, 02:11:35 pm --- --- Quote from: wasedadoc on October 29, 2023, 01:51:51 pm ---Here is some evidence that Gibbs ears are real and can be seen on the output of a passive analogue filter. --- End quote --- yes! i was about to sketch similar picture for Fungus to understand, but since you provided proven one, thanks! --- End quote --- Those aren't Gibbs ears. (because the circuit is NOT ringing before the pulse occurs) --- End quote --- here attached for your sharp and trained eyes... input is blue, but given we dont know it exists. similar if its like in the IC, who knows? yes its not Gibbs, but we could be mistakenly think is... |
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