iirlp(1)

NAME
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).