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.TH REMEZ G "April 1993" "Scilab Group" "Scilab Function"
.so ../sci.an
.SH NAME
remez - Remez's algorithm
.SH CALLING SEQUENCE
.nf
[an]=remez(nc,fg,ds,wt)
.fi
.SH PARAMETERS
.TP
nc
: integer, number of cosine functions
.TP
fg,ds,wt
: real vectors
.TP
fg
: grid of frequency points in [0,.5)
.TP
ds
: desired magnitude on grid \fVfg\fR
.TP
wt
: weighting function on error on grid \fVfg\fR
.SH DESCRIPTION
minimax approximation of a frequency domain magnitude response.
The approximation takes the form
.nf
h = sum[a(n)*cos(wn)]
.fi
for n=0,1,...,nc. An FIR, linear-phase filter
can be obtained from the the output of \fVremez\fR by using the
following commands:
.nf
hn(1nc-1)=an(nc-12)/2;
hn(nc)=an(1);
hn(nc+12*nc-1)=an(2nc)/2;
.fi
where \fVan\fR = cosine filter coefficients
.SH SEE ALSO
remezb
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