Re: Audio Sampling Question


"Guy Macon"
Eeysore wrote:

Quite simply, there are few musical signals with a content
above 20kHz and fewer still transducers that might pick them up.

There are, however, plenty of EMI signals with a content
above 20kHz and the wires to those transducers might very
well pick them up.


** The universal use of twisted pair, balanced, shielded audio lines
basically precludes such injection - the sources of which are normally at
a very low level in any case.



With 192 kHz sampling and a 20 kHz signal, you don't need a
very sophisticated or expensive antialiasing filter, but not
having one at all is like playing with fire; eventually you
will get burned.


** If only to preserve the best possible s/n ratio.




......... Phil


.

Relevant Pages

  • Re: Audio Sampling Question
    ... above 20kHz and fewer still transducers that might pick them up. ... There are, however, plenty of EMI signals with a content ... With 192 kHz sampling and a 20 kHz signal, ...
    (sci.electronics.design)
  • Re: Audio Sampling Question
    ... Guy Macon wrote: ... above 20kHz and fewer still transducers that might pick them up. ... There are, however, plenty of EMI signals ...
    (sci.electronics.design)
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