iirgroup

group delay Lp IIR filter optimization

Calling Sequence

[lt,grad]=iirgroup(p,r,theta,omega,wt,td)
[cout,grad,ind]=iirlp(x,ind,p,[flag],lambda,omega,ad,wa,td,wt)

Arguments

:r vector of the module of the poles and the zeros of the filters : :theta vector of the argument of the poles and the zeros of the

filters

: :omega frequencies where the filter specifications are given : :wt weighting function for and the group delay : :td desired group delay : :lt, grad criterium and gradient values :

Description

optimization of IIR filters for the Lp criterium for the the group delay. (Rabiner & Gold pp270-273).