[Elecraft] Question - for Educational Purposes

[Don Wilhelm]

Larry,

The best way that I can think of is to encourage you to try both and 
draw your own conclusions of the merits of each.
I cannot envision when *you* would want to use one over the other, my 
ear/brain combination will work differently than yours.  Listen to both 
and decide.  I would say that you would want to experiment under 
conditions of heavy QRM as well as heavy QRN or a combination of both - 
that is where such extreme narrow filtering would be effectively used - 
one cannot do a reasonable evaluation on an empty band.

No math involved in that - just listen and let your own judgment provide 
your answer - it is a matter of perception, and each of us perceives 
differently, that is why you have a choice with the K3.

73,
Don W3FPR.

KB5DXY wrote:
> There is no third grade level explanation of these concepts. All discussions
> I have ever read trying to understand IIR, FIR and DSP in general have used
> high level math (read calculus). I went as far as Algebra II in school and
> that was over forty years ago. I have no chance of reading about DSP in the
> ARRL Handbook or Experimental Methods in RF Design and understanding these
> functions.
>
> How about a discussion of what these filters actually do for you and why you
> might want to use each one. Telling me IIR filters have feedback and FIR
> filters don't is good information but why do I care? What does each filter
> actually do for me and when should I use each one?
>
> Remember, no math and don't give me a source to go read about them unless
> that source doesn't use math in the explanation.
>
> --... ...--
> Larry
> KB5DXY
>   
>