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Hello I am trying to construct an N-th order bandpass digital elliptic filter using the command: [B,A] = ELLIP(N,Rp,Rs,Wn) where Wn is a two- element vector, Wn = [W1 W2] with 0.0 < Wn < 1.0, with 1.0 corresponding to the Nyquist frequency. The parameters Rp and Rs respectively define the Passband ripple, in decibels and the Stopband attenuation, in decibels. Can someone please explain to me what this actually means and how I go about identifying values for Rp and Rs? Thanks in advance Calum Macdonald |