Demodulating the signal. DeAmpMod = (1/2).*(ademod(AmpMod,Fc,Fs, amdsb-sc ,num,den)) (ALTERNATIVE APPROACH) DeAmpMod = AmpMod.*Cs Designing butterworth low pass filter. [num,den] = butter(2,.8) FilteredOutput = filter(num,den,DeAmpMod) Plotting the input speech signal data . subplot(2,2,1) axis normal plot(data) grid on title( Initial Speech Signal ) xlabel( Samples ) ylabel( Speech Signal ) Plotting the modulated speech signal AmpMod . subplot(2,2,2) axis normal plot(AmpMod) title( Modulated Speech Signal ) xlabel( Samples ) ylabel( Modulated Signal )

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