The post I was referring to is from the "Muso's of the world unite! ;)"
thread..
"Sure putting it external helps, but it's still real hard. It's not outside
, it's internnoise that's a problemal noise. As I say, soundcards are
generally desinged with very expensive EMI minimisation packages run by
extremely experienced engineers." By Tom Brandon (31/10/00).

So yeah after 6 months what I read has become abit hazy!

I take it "EMI minimisation packages" is referring to the overall design of
the PCB?

But anyway couldn't DSP be used to surpress/attenuate noise? Digital
bandpass filters exist so therefore isn't this DSP?

-Mg

From: "Matthew Mucker" <mmucker@airmail.net>


> You can't filter out noise with DSP.  By definition, it's noise... there's
> no way to distinguish the noise from the desired signal.  The way to
> eliminate noise is to not let it in to begin with. :)
>
> (This was said to me by a soundcard engineer who was frustrated trying to
> get the digital folks to understand this about the analog audio signals.
> I'm just repeating it here, and have no expertise on this myself.)
>
> =Matt

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