Discrete-time Fourier transform of a list sequence.
ListFourierSequenceTransform[list, ω]
ListFourierSequenceTransform[list, ω, k]
ListFourierSequenceTransform[list, {ω 1, ω 2, …}, {k1, k2, …}]
ListFourierSequenceTransform[{1, 1, 1} / 3, ω]
→ 1/3 + 1/(3*E^(I*ω)) + 1/(3*E^((2*I)*ω))ListFourierSequenceTransform[{1, 0, -1}, ω]
→ 1 - E^((-2*I)*ω)Plot[Abs[ListFourierSequenceTransform[a, ω]], {ω, 0, π}, PlotRange -> All]
→ -Graphics-