iirlp
iirlp — Lp IIR filter optimization
Calling sequence
[cost,grad,ind]=iirlp(x,ind,p,[flag],lambda,omega,ad,wa,td,wt)
Parameters
| x | : 1X2 vector of the module and argument of the poles and the zeros of the filters |
| flag | : string : 'a' for amplitude, 'gd' for group delay; default case for amplitude and group delay. |
| omega | : frequencies where the filter specifications are given |
| wa,wt | : weighting functions for the amplitude and the group delay |
| lambda | : weighting (with 1-lambda) of the costs ('a' and 'gd' for getting the global cost. |
| ad, td | : desired amplitude and group delay |
| cost, grad | : criterium and gradient values |
Description
optimization of IIR filters for the Lp criterium for the
amplitude and/or the group delay. (Rabiner & Gold pp270-273).
