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Time Frequency Toolbox >> Time Frequency Toolbox > Reassigned Time-Frequency Processing > tfrrpwv

tfrrpwv

Reassigned pseudo Wigner-Ville distribution.

Calling Sequence

[TFR,RTFR,HAT] = tfrrpwv(X)
[TFR,RTFR,HAT] = tfrrpwv(X,T)
[TFR,RTFR,HAT] = tfrrpwv(X,T,N)
[TFR,RTFR,HAT] = tfrrpwv(X,T,N,H)
[TFR,RTFR,HAT] = tfrrpwv(X,T,N,H,TRACE)
[TFR,RTFR,HAT] = tfrrpwv(...,'plot')

Parameters

X :

A Nx elements vector: the analyzed signal.

T:

a real Nt vector with elements regularly spaced in [1 Nx] : time instant(s) (default: 1:NX).

N:

a positive integer: the number of frequency bins (default: Nx). For faster computation N should be a power of 2.

H :

real vector with odd length: the frequency smoothing window,(default: window("hm",N/4)).

It will be normalized such as the middle point equals 1 to preserve signal energy.

TRACE :

if nonzero,the progression of the algorithm is shown (default : 0).

'plot':

if the last input parameter value is 'plot', tfrqview is called and the time-frequency representation will be plotted.

TFR :

A real N by Nt array: the time-frequency representation.

RTFR :

A real N by Nt array: the reassigned time-frequency representation.

HAT :

AN by Nt complex matrix of the reassignment vectors.

Description

tfrrpwv computes the pseudo Wigner-Ville distribution and its reassigned version.

Examples

sig=fmlin(128,0.1,0.4); t=1:2:128;
h=tftb_window("kr",17,3*%pi); tfrrpwv(sig,t,64,h,1,'plot');

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