Wigner-Ville time-frequency distribution
[TFR,T,F] = tfrwv(X) [TFR,T,F] = tfrwv(X, T) [TFR,T,F] = tfrwv(X, T, N) [TFR,T,F] = tfrwv(X, T, N, TRACE) [TFR,T,F] = tfrwv(...,'plot')
A Nx elements vector (auto-WV) or a Nx by 2 array signal (cross-WV).
a real Nt vector with elements in [1 Nx] : time instant(s) on which the TFR is evaluated (default: 1:NX).
a positive integer: the number of frequency bins (default:NX).
if nonzero,the progression of the algorithm is shown (default : 0).
if one input parameter is 'plot', tfrqview is called and the time-frequency representation will be plotted.
A real N by Nt array: the time-frequency representation.
A N vector of normalized frequencies.
tfrwv computes the Wigner-Ville distribution of a discrete-time signal or the cross Wigner-Ville representation between two signals.
sig = fmlin(128,0.1,0.4); [TFR,T,F] = tfrwv(sig); clf; gcf().color_map = jetcolormap(128); Sgrayplot(T,F(1:$/2),TFR(1:$/2,:)'); | ![]() | ![]() |