Thanks to all who responded, I will whip up Matlab
and se what effect will come of the FIR vs. IIR filters.
If it has the filtering/freq responce(damping) I need
then one could not comlain about ram usage :-) .


Dennis wrote:
>This depends on what the actual data is to represent and the
>procesing time that you have for each sample. If you have time, then
you

Data is from an AD7730 ( Transducer ADC ) measuring on strain gauges
in 2mV/V range. 5V AC to feed the brigde, will give me at most
10mV->24Bits
input signal. Aiming for, at least, 1uV verifiable resolution.
I want to cater for both high filtering application
where data output should be very stable but also applications where
a fast step-responce is crucial ( thats why the variable window idea ).
And yes I have quite a bit of 'free' time, I dont think data processing
time would pose as a problem.
( I'm more concerned over ram usage :-) )

All in all fun stuff...


/Tony






Tony KŸbek, Flintab AB            
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E-mail: tony.kubek@flintab.com
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