This is documentation for an old release of SciPy (version 0.7.). Read this page in the documentation of the latest stable release (version 1.15.0).
tilbert(x, h, period=2*pi) -> y
Return h-Tilbert transform of a periodic sequence x.
If x_j and y_j are Fourier coefficients of periodic functions x and y, respectively, then
y_j = sqrt(-1)*coth(j*h*2*pi/period) * x_j y_0 = 0
(theoretically oo-Tilbert == Hilbert). For even len(x), the Nyquist mode of x is taken zero.