next up previous contents
Next: Inverse Chebyshev Up: Specify a transfer function Previous: Butterworth   Contents


The command

chebyshev ( <order> , <ripple> ) ;
<order> : integer; order,
<ripple> : real; ripple in dB
results in a Chebyshev cascade filter. Its bandwidth is 1rad/s. If the ripple is zero, the bandwidth is the frequency where the damping is -3 dB. If the ripple is nonzero, the bandwidth is the highest frequency where the damping equals the ripple.