IMPULSE RESPONSE OF A FILTER

[H-man]

I simply want to obtain the impulse response using the 'b' and 'a' of a filter.

Example: Hanning filter
a=[4 0 0];
b=[1 2 1];
(above code is in matlab).

What vi do i use in labview to obtain this???

[Jeremy Braden]

Can you explain more what you want to do? LabVIEW Full and Pro come with the analysis package which includes several filters and Window VIs. You can find them by thumbtacking down the functions palette (click on the thumb tack icon at the top of the palette to make it say open) and then click on the magnifying glass at the top of the palette window. This brings up a search utility that will dig through the functions palette for you. It is really handy.

[H-man]

I tried that as well. I am searching for a vi that would be able to give me the impulse response (as well as the magnitude, phase response) of any filter, say for example the 9th order high pass butterworth filter.
Is there such a vi if not, how would I calculate the above responses and show their display graph?