How to perform a Butterworth filter with zero phase shift in Simulink

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Giuseppe Naselli
Giuseppe Naselli 2013-10-26
Hi All,
In order to obtain a zero-phase shift filter in matlab, I used to use butter() in order to get the filter coefficient and then use them with filtfilt(). As filtfilt acts on the forward and backward direction then my filtered signal was without phase shift.
Is there anything that I can do in order to perform the same operation in SIMULINK using the minimum number of blocks?
Any help and/or suggestions on that will really be appreciated!
Thanks in advance
Cheers
G

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