PFILT Apply filter with periodic boundary conditions
Usage: h=pfilt(f,g);
h=pfilt(f,g,a,dim);
PFILT(f,g) applies the filter g to the input f. If f is a
matrix, the filter is applied along each column.
PFILT(f,g,a) does the same, but downsamples the output keeping only
every a'th sample (starting with the first one).
PFILT(f,g,a,dim) filters along dimension dim. The default value of
[] means to filter along the first non-singleton dimension.
The filter g can be a vector, in which case the vector is treated
as a zero-delay FIR filter.
The filter g can be a cell array. The following options are
possible:
If the first element of the cell array is the name of one of the
windows from FIRWIN, the whole cell array is passed onto
FIRFILTER.
If the first element of the cell array is 'bl', the rest of the
cell array is passed onto BLFILTER.
If the first element of the cell array is 'pgauss', 'psech',
the rest of the parameters is passed onto the respective
function. Note that you do not need to specify the length L.
The coefficients obtained from filtering a signal f by a filter g are
defined by
L-1
c(n+1) = sum f(l+1) * g(an-l+1)
l=0
where an-l is computed modulo L.
Url: http://ltfat.github.io/doc/sigproc/pfilt.html
See also: pconv.
Package: ltfat