Hi everybody, I need help with disigning filters in matlab:
I was designed a bandpass filter in the toolbox and export it like an object to my workspace, then I tried to filter data with it using the comand filtfilt, the problem es that this comand don't recognize this filter as a matrix so when i use the follow linecommand: a11=filtfilt(Fil1,a1); i recived the follow error "Not enough input arguments". The Fs frecuency of the filter is 1000Hz, the Flowpass is 10Hz and the Fhighpass is 14Hz. Apass 1dB. Type Chebychev Type 1.
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Assume that Fil1 is your filter object, if you enter
does it return dfilt.df2sos?
If so, then depending on what version of MATLAB you are using, try:
out = filtfilt(Fil1.sosMatrix,Fil1.ScaleValues,a1);
where a1 is your data.
If you have an older version of MATLAB where the above command does not work, write back.