REMEZ(G)

NAME
remez - Remez's algorithm

CALLING SEQUENCE
[an]=remez(nc,fg,ds,wt)

PARAMETERS

nc  : integer, number of cosine functions

fg,ds,wt
    : real vectors

fg  : grid of frequency points in [0,.5)

ds  : desired magnitude on grid fg

wt  : weighting function on error on grid fg

DESCRIPTION
minimax approximation of a frequency domain magnitude response. The approximation takes the form
 h = sum[a(n)*cos(wn)]
for n=0,1,...,nc. An FIR, linear-phase filter can be obtained from the the output of remez by using the following commands:
                 hn(1nc-1)=an(nc-12)/2;
                 hn(nc)=an(1);
                 hn(nc+12*nc-1)=an(2nc)/2;
where an = cosine filter coefficients