FILTERBANKREALTIGHT Tight filters of filterbank for real signals only
Usage: gt=filterbankrealtight(g,a,L);
gt=filterbankrealtight(g,a);
filterabankrealtight(g,a,L) computes the canonical tight filters of
g for a channel subsampling rate of a (hop-size) and a system
length L. L must be compatible with subsampling rate a as
L==filterbanklength(L,a). The tight filters work only for real-valued
signals. Use this function on the common construction where the filters
in g only covers the positive frequencies.
filterabankrealtight(g,a) does the same, but the filters must be FIR
filters, as the transform length is unspecified. L will be set to
next suitable length equal or bigger than the longest impulse response.
The format of the filters g are described in the help of FILTERBANK.
REMARK: The resulting system is tight for length L. In some cases,
using tight system calculated for shorter L might work but check the
reconstruction error.
Url: http://ltfat.github.io/doc/filterbank/filterbankrealtight.html
See also: filterbank, ufilterbank, ifilterbank.
Package: ltfat