Filtering with arbitrary band

[Anonymous]

Now, Measurement Studio includes filtering commands with only low-pass
and high-pass parameters. I'd like to filter more complex bands like
20-80 Hz band-pass with 50Hz notch filter. Can I do that
simultaneously with one filtering or do one have to run two successive
filterings?

[Anonymous]

just continuing... I'm using PCI 6033E card and there is no notch
filter
in the hardware. I just found the equipripple filter which
posibilities multiband filter design. It's also possible to create 50
Hz notch filter with 80hz low-pass, but I have to use filter order
even 500 or more, that the frequence response seems sufficiently good.
However, our real-time EEG software cannot run with that high filter
order... Any other ideas for that kind of filtering?

[Anonymous]

Hello

In any case, you would need to set up a series of bandpass filters for
this. You might want to try the different types of filters to see if
you really need to bump up the order that much. If you're using C++,
check out the CNiMath and CNiIIRCascadeFilter classses.CWDSP for VB
should have everything you need.

Bilal Durrani
NI