IIR Filter Coefficant Value

Hello Sir / Madam

After I finisihing IIR Filter Design MATLAB shows me this coefficents window. How can I calculate coefficents value which using these informations.

Answer 1

[Star Strider]

I do not have access to R2010b and I have no idea what application that is.

I would design the filter a bit differently, using command-line functions and a more efficient filter design and implementation —

Fs = 4.8E+5;
Fn = Fs/2;
Wp = [100 1.9E+5]/Fn;
Ws = Wp.*[0.95 1.05];
Rs = 50;
Rp =  1;
[n,Wn] = ellipord(Wp,Ws,Rp,Rs);
[z,p,k] = ellip(n,Rp,Rs,Wp);
[sos,g] = zp2sos(z,p,k);
FilterOrder = n

FilterOrder = 8

figure
freqz(sos, 2^16, Fs)
set(subplot(2,1,1), 'XScale','log')
set(subplot(2,1,2), 'Xscale','log')

Then use the ‘sos’ and ‘g’ outputs with the filtfilt function to do the actual signal filtering.

.

Answer 2

[Bharath Venkataraman]

Click on File -> Export. There is an option to export the coefficients to the workspace (SOS, G will be exported as variables accessible in MATLAB).