Please can you give more details :
value of Order and Fcutoff/Fs/2
and what you are doing with hz (because iir does not call dbphi)
Serge
Le 23/02/2016 12:21, grivet a écrit :
Hello,
I am beginning to use digital filters to treat some data. As my first
step, I try to run the examples in the help,how to design an elliptic
filter (using Scilab 5.5.1, Win7-64). This works . However, when I
select a Butterworth filter:
hz = iir(Order,'lp','butt',Fcutoff/Fs/2,[0.1 0.1]);
I get this error message:
Singularité de la fonction log ou tan.
at line 6 of function dbphi called by :
[db_repf, phi_repf] = dbphi(repf);
What did I miss ?
No bugs have been reported for function dbphi, but three similar bugs
are listed for iir.
Any suggestion welcome.
JPGrivet
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