An elliptic or Cauer filter can be generated with

cauer (<order>,<ripple>,<stopband>) ;

The bandwidth of this filter, defined in the same way as for Chebyshev filters, is 1rad/s. The stopband begins at

<order>: integer; order, <ripple>: real; passband ripple in dB, <stopband>: real; normalized lowest stopband frequency.

2009-06-03