File: iirgroup.man

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.TH iirgroup 1 "April 1993" "Scilab Group" "Scilab Function"
.so ../sci.an
.SH NAME
iirgroup - group delay Lp IIR filter optimization
.SH CALLING SEQUENCE
.nf
[lt,grad]=iirgroup(p,r,theta,omega,wt,td)
[cout,grad,ind]=iirlp(x,ind,p,[flag],lambda,omega,ad,wa,td,wt)
.fi
.SH PARAMETERS
.TP 10
r
: vector of the module of the poles and the zeros of the filters
.TP 10
theta
: vector of the argument of the poles and the zeros of the filters
.TP 10
omega
: frequencies where the filter specifications are given
.TP 10
wt
: weighting function for and the group delay
.TP 10
td
: desired group delay
.TP 10
lt, grad
: criterium and gradient values
.SH DESCRIPTION
optimization of IIR filters for the Lp criterium for the
the group delay. (Rabiner & Gold pp270-273).