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Propeller Head Plaza Technical and scientific discussion of amps, cables and other topics. |
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Propeller Head Plaza Technical and scientific discussion of amps, cables and other topics. |
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In Reply to: Oh Really?? posted by Todd Krieger on November 18, 2005 at 01:50:32:
Dithering requires no averaging.If you take the transform, digitally, of a dithered signal, without any filtering, you will see no harmonic lines, only alias lines. If you work at the sampling rate for your FFT, you won't even see alias lines.
That, in, by, and of itself, proves, absolutely, without any doubt, that no filtering whatsoever is required for dither to function perfectly and absolutely. This is trivial to test for yourself, so go do it and then come back and apologize.
You are, again, teaching mythology. It is irresponsible of you to continue to misteach the most elementary basics of sampling theory.
You are confusing averaging for signal detection with filtering and dithering, I think, but from your absolutist, completely off-the-wall statements, it's hard to tell where you go wrong.
And I see you're treating me just like you treated jj, by repeating fallacy after fallacy, refusing to even think about what's being said, and misteaching, misteaching, and more misteaching.
As to your whine about "proper", a DAC with no reconstruction filter (analog, digital, doesn't matter, except that you must have some kind or other of final analog reconstruction filter, but it can be simpler than it might otherwise be) is improperly implimented.
The Shannon Sampling theorem requires filtering. No filtering, no proper sampling.
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- You're full of it. - Silver Eared John 13:59:04 11/18/05 (0)
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