figure(1); clf; % [d,r] = wavread(... % 'C:\Documents and Settings\bruce land\My Documents\Matlab\Speech\AllDigits8khz.wav') d = chirp(0:1/8000:2,125,2,3500); N = length(d); for i = 0:fix(N/32)-1 %x = d([1:2:64]+(i*64)); x = d([1:32]+(i*32)); X = abs(dct(x)); subplot(2,1,1) plot(x) set(gca,'ylim',[-1 1],'xlim',[1,32]) subplot(2,1,2) plot(X) set(gca,'ylim',[-5 5],'xlim',[1,32]) drawnow pause(.033) end