Choi-Williams time-frequency distribution.
[TFR,T,F]=tfrcw(X [TFR,T,F]=tfrcw(X,T) [TFR,T,F]=tfrcw(X,T,N) [TFR,T,F]=tfrcw(X,T,N,G) [TFR,T,F]=tfrcw(X,T,N,G,H) [TFR,T,F]=tfrcw(X,T,N,G,H,SIGMA) [TFR,T,F]=tfrcw(X,T,N,G,H,SIGMA) [TFR,T,F]=tfrcw(...,'plot')
signal if auto-CW, or [X1,X2] if cross-CW.
time instant(s) (default : 1:length(X)).
number of frequency bins (default : length(X)).
time smoothing window, G(0) being forced to 1. (default : Hamming(N/10)).
frequency smoothing window, H(0) being forced to 1. (default : Hamming(N/4)).
kernel width (default : 1)
if nonzero, the progression of the algorithm is shown (default : 0).
if one input parameter is 'plot', tfrcw runs tfrqview. and TFR will be plotted
time-frequency representation.
vector of normalized frequencies.
tfrcw computes the Choi-Williams distribution of a discrete-time signal X, or the cross Choi-Williams representation between two signals.