I am trying to understand how to design a Sallen Key and MFB Filter that has Chebyshev characterisitcs.
Currently I am inputting the T.F (shown below) into MATLAB and using bode command to plot the T.F of various Qs to analyse the difference.
H.wo^2/S^2+(wo/Q)+wo^2
H=3.16, wo=125663, Q=varied to anaylse difference (intervals between 0.5 to 10)
When trying to utilise cheby1 and cheby2 to get the filters characteristics I am getting confused.
I input the relevant info into cheby1 below
[b,a] = cheby1(n,Rp,Wp,fType)
n=2, Rp=0.5, Wp=20000Hz, "low"
I keep getting this error "the cutoff frequencies must be within the interval of (0 1)".
I am very new to matlab and filter designs but I am struggling to understand what I am missing
Thanks,
AndyI am trying to understand how to design a Sallen Key and MFB Filter that has Chebyshev characterisitcs.
Currently I am inputting the T.F (shown below) into MATLAB and using bode command to plot the T.F of various Qs to analyse the difference.
H.wo^2/S^2+(wo/Q)+wo^2
H=3.16, wo=125663, Q=varied to anaylse difference (intervals between 0.5 to 10)
When trying to utilise cheby1 and cheby2 to get the filters characteristics I am getting confused.
I input the relevant info into cheby1 below
[b,a] = cheby1(n,Rp,Wp,fType)
n=2, Rp=0.5, Wp=20000Hz, "low"
I keep getting this error "the cutoff frequencies must be within the interval of (0 1)".
I am very new to matlab and filter designs but I am struggling to understand what I am missing
Thanks,
Andy I am trying to understand how to design a Sallen Key and MFB Filter that has Chebyshev characterisitcs.
Currently I am inputting the T.F (shown below) into MATLAB and using bode command to plot the T.F of various Qs to analyse the difference.
H.wo^2/S^2+(wo/Q)+wo^2
H=3.16, wo=125663, Q=varied to anaylse difference (intervals between 0.5 to 10)
When trying to utilise cheby1 and cheby2 to get the filters characteristics I am getting confused.
I input the relevant info into cheby1 below
[b,a] = cheby1(n,Rp,Wp,fType)
n=2, Rp=0.5, Wp=20000Hz, "low"
I keep getting this error "the cutoff frequencies must be within the interval of (0 1)".
I am very new to matlab and filter designs but I am struggling to understand what I am missing
Thanks,
Andy 2nd order filters, matlab code, sallen key, mfb, chebyshev MATLAB Answers — New Questions

​