function aux = voirspec(x,Fe,fmax,nfft)
%        aux = voirspec(x,Fe,fmax,nfft)
% spectrogramme entre 0 et fmax
%--------------------------------------

window = nfft; 
noverlap = ceil(nfft/3);

specgram(x,nfft,Fe,window,noverlap);
xlabel('Temps'); ylabel('Fréquence'); 
T = length(x)/Fe;
axis([0 T 0 fmax]);
aux = 1;
