‘time-frequency’ wigner spectrum
[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.