wigner

wigner — 'time-frequency' wigner spectrum

Calling sequence

[tab]=wigner(x,h,deltat,zp)

`tab`	: wigner spectrum (lines correspond to the time variable)
`x`	: analyzed signal
`h`	: data window
`deltat`	: analysis time increment (in samples)
`zp`	: length of FFT's. `%pi/zp` gives the frequency increment.

function which computes the 'time-frequency' wigner spectrum of a signal.