iirlp

Lp IIR filter optimization

Calling Sequence

[cost,grad,ind]=iirlp(x,ind,p,[flag],lambda,omega,ad,wa,td,wt)

Arguments

: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).