07-28-2014 01:44 AM
I know that a FIR filter with N taps has a delay of (N -1 ) / 2 samples.
If this filter decimates of a M factor, the decimated signal has a delay of (N - 1) / (2 * M) samples.
I used this approach several times to calculate the exact delay of a FIR filter, when I know the number of taps.
How can I calculate this delay if I design my filter using the vi "DFD NStage MRate Filter Design"?
07-31-2014 03:29 AM
anyone has an idea?
07-31-2014 03:45 AM
if I'm right, this is what is called "group delay" or "phase delay" of the filter.
Is there a LV function to get this info?