[EMAIL PROTECTED] wrote:
>
> Ralphy wrote:
>
> > AD and DA conversion is NOT taking samples and connecting lines. And
> > that's
> > where you go wrong. It's a mathematical transformation of the signal.
> >
> I don't think you're right here old lad. The electronic hardware is
> carrying out an APPROXIMATION of the mathematical transformation, or if you
> like, the mathematics describes an abstraction of the physical process. I
> agree, once you are in the digital domain, you can then describe what
> happens exactly with mathematics, but of course, you can't listen to that. A
> 22.05 kHz sinewave WILL come out of the D/A as a square wave (if you
> disregard oversampling, and the D/A slew rate) and needs to be filtered to
> remove harmonics above 22.05 kHz if you want to reconstitute the sinewave.
>
> barnesy
You're right. The D/A converter -if you disregard the filter- will output a
square-wave. But for me, the electronics are an implementation of a mathematical
tric. This implies that the filtering is part of the D/A stage!
Cheers,
Ralph -> who thinks we're both right...
--
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Ralph Smeets Functional Verification Centre Of Competence - CMG
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"For many years, mankind lived just like the animals. And then some-
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to talk."
-- Stephen Hawking, later used by Pink Floyd --
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