Home > freetb4matlab > signal > fftfilt.m

fftfilt

PURPOSE

SYNOPSIS

function y = fftfilt (b, x, N)

DESCRIPTION

% -*- texinfo -*-
% @deftypefn {Function File} {} fftfilt (@var{b}, @var{x}, @var{n})
%
% With two arguments, @code{fftfilt} filters @var{x} with the FIR filter
% @var{b} using the FFT.
%
% Given the optional third argument, @var{n}, @code{fftfilt} uses the
% overlap-add method to filter @var{x} with @var{b} using an N-point FFT.
%
% If @var{x} is a matrix, filter each column of the matrix.
% @end deftypefn

CROSS-REFERENCE INFORMATION

This function calls:

This function is called by:

decimate % error: y = decimate(x, q [, n] [, ftype])
fftconv % Return the convolution of the vectors @var{a} and @var{b}, as a vector
fractdiff % Compute the fractional differences @math{(1-L)^d x} where @math{L}
impz % error: [x, t] = impz(b [, a, n, fs])
interp % error: y = interp(x, q [, n [, Wc]])
spencer % Return Spencer's 15 point moving average of every single column of