Thread Subject: need help in surf function

Hi All,

I had the below code to read an audio wav file. I would like to create surf plot using the data in this audio wav file. However, when i run the below code, the code can only plot the spectrogram. Can anyone advise me where did i go wrong? tks alot


[filename, pathname] = uigetfile('*.*', 'Pick any file');
[y, fs, nbits] = wavread(filename);
[S,F,T,P] = spectrogram(y);
surf(T,F,10*log10(abs(P)),'edgecolor','none')
colormap(jet); axis tight;
view(0,90);
xlabel('Time'); ylabel('Hz');