With two arguments, fftfilt filters x with the FIR filter b using the FFT. Given the optional third argument, n, fftfilt uses the overlap-add method to filter x with b using an N-point FFT. If x is a matrix, filter each column of the matrix.
With two arguments, fftfilt filters x with the FIR filter b using the FFT.
fftfilt
Given the optional third argument, n, fftfilt uses the overlap-add method to filter x with b using an N-point FFT.
If x is a matrix, filter each column of the matrix.