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Ctfrpwv

Pseudo Wigner-Ville time-frequency distribution.

Calling Sequence

[TFR,T,F]=Ctfrpwv(X)
[TFR,T,F]=Ctfrpwv(X,T)
[TFR,T,F]=Ctfrpwv(X,T,N)
[TFR,T,F]=Ctfrpwv(X,T,N,H)

Parameters

X :

Analyzed signal.

T :

time instant(s) (default : 1:length(X)).

N :

number of frequency bins (default : length(X)).

H :

frequency smoothing window, in the time-domain, (default : Hamming(N/4)).

TFR :

time-frequency representation.

F :

vector of normalized frequencies.

Description

computes the Pseudo Wigner-Ville distribution of a signal X.

Examples

x = hilbert(sin(2*%pi*0.25*(1:128))+0.5*rand(1,128,'normal'));
t=1:128; [tfr,T,F]=Ctfrpwv(x,t,128);
grayplot(T,F,tfr');xlabel('time'); ylabel('frequency')

See also

Authors

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