What is the difference between designfilt and fdesign

Im trying to do zero phase filter my obj.CurrentData with this:

 %             FilterType='butter';
 %             FilterParam='N,F3dB1,F3dB2';
 %             BPFOrder=2;
 d = fdesign.bandpass(obj.BPFilterParam,obj.BPFOrder,obj.BPFLimits(1),obj.BPFLimits(2),obj.Fs);
 Hd = design(d,obj.BPFilterType); 

 obj.CurrentData=filtfilt(Hd,obj.CurrentData')';

But I only get: Error using filtfilt (line 78) Not enough input arguments.

It wants 3 inputs... although the help text says "y = filtfilt(d,x)" should work?

Answer 1

[Honglei Chen]

Could you share which release you are using? You can find the info by runnig ver at the command prompt.

HTH

[Micke Malmström]

MATLAB Version: 9.2.0.556344 (R2017a)