Stefan87
Newbie level 1
Hi there,
I have a problem with the phase of my differentiator.
I designed it with two methods (frequency sampling and Remez algorithm) in Matlab (fir2 and firpm)
when I use a filter types with odd-order everything is right.
If I take one with even order I had a phase-shift between the input and the output
which dependet on frequency.
although my filter is linear phase
I have tested everything in a mixed sine
Did any of them have any idea what is wrong with the filter of even order?
If you need more information , you can wright it and i will told you more
Thank you very much
Stefan
I have a problem with the phase of my differentiator.
I designed it with two methods (frequency sampling and Remez algorithm) in Matlab (fir2 and firpm)
when I use a filter types with odd-order everything is right.
If I take one with even order I had a phase-shift between the input and the output
which dependet on frequency.
although my filter is linear phase
I have tested everything in a mixed sine
Did any of them have any idea what is wrong with the filter of even order?
If you need more information , you can wright it and i will told you more
Thank you very much
Stefan
Last edited: