Examples
fftconv([1,2,3], [3,4,5]) ans = 3. 10. 22. 22. 15. |  |  |
Convolve two vectors using the FFT for computation.
Y = fftconv(X, Y) Y = fftconv(X, Y, N)
Vectors
Convolve two vectors using the FFT for computation. 'c' = fftconv (X, Y)' returns a vector of length equal to 'length(X) + length (Y) - 1'. If X and Y are the coefficient vectors of two polynomials, the returned value is the coefficient vector of the product polynomial.
fftconv([1,2,3], [3,4,5]) ans = 3. 10. 22. 22. 15. | | |