anti aliasing filter source
Newsgroups: comp.lang.c
Date: Fri, 28 Apr 95 05:18:09 GMT
Organization: CEA cadarache
Hello
I'm searching an anti aliasing filter in C or a lib in C for numerical
filtering. Do you know where i can find this ?
Thanks in advance.
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! Jean-Francois Artaud !
! !
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! fax : (33) 42-25-62-33 !
! adresse : Centre d'Etudes de Cadarache !
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Jean --
Things like this would get more replies from the
??.numerical_analysis or sci.electronics groups,
but I would like to make one special comment:
Anti-aliasing filters cannot be implemented in
software. You need an analog filter BEFORE the
digital sampling takes place.
I did not believe this myself, but after much
mathematical argument with people more knowledgeable
than myself, I sadly saw the proof. Once the digital
sampling happens, the damage is DEEPLY embedded in
the data. Se la vie (is that correct?).
Sorry about that. --Jim
------disclaimer: only MY opinion, and only my OPINION----------
