[Scilab-users] bug in function iir ?

[grivet]

Le 24/02/2016 21:40, Serge Steer a écrit :
> Le 24/02/2016 11:30, grivet a écrit :
>> I appreciate your help; however, neither suggestion works: I still 
>> get the same error message.
>> The similar line
>>         [frq,repf]=repfreq(hz,0.01,0.49);
>> has no problem
> please can you save the hz value using the Scilab save function and 
> send the file?
> Serge
>>>
Voila le code:
//filtre Butterworth
Order   = 2; // The order of the filter
Fs      = 1000; // The sampling frequency
Fcutoff = 40;   // The cutoff frequency

// We design a low pass Butterworth filter
hz = iir(Order,'lp','butt',Fcutoff/Fs/2,[0.1 0.1]);

// We compute the frequency response of the filter
[frq,repf]=repfreq(hz,0,0.5);
[db_repf, phi_repf] = dbphi(repf);

// And plot the bode like representation of the digital filter
subplot(2,1,1);
plot2d(Fs*frq,db_repf);
xtitle('Obtained Frequency Response (Magnitude)');
subplot(2,1,2);
plot2d(Fs*frq,phi_repf);
xtitle('Obtained Frequency Response (Phase in degree)');

iir est sauvegardé dans "svgd_iir" joint (binaire).

Cordialement,
JP Grivet

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