[Scilab-users] bug in function iir ?

[Serge Steer]

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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