— Function File: h = hilbert (f,N,dim)

Analytic extension of real valued signal

h=hilbert(f) computes the extension of the real valued signal f to an analytic signal. If f is a matrix, the transformation is applied to each column. For N-D arrays, the transformation is applied to the first non-singleton dimension.

real(h) contains the original signal f. imag(h) contains the Hilbert transform of f.

hilbert(f,N) does the same using a length N Hilbert transform. The result will also have length N.

hilbert(f,[],dim) or hilbert(f,N,dim) does the same along dimension dim.