how can i write my demodualted voice signal to a file

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For AM modulation i gave my voice as input.i am able to observe my demodulated signal in frequency spectrum but i want to listen the demodulated signal ...so how can i listen the demodulated signal ?
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David K.
David K. 2019-8-29
I assume that to initially get to the frequency spectrum you used the fft. To listen to it you need to convert back to the time domain with the inverse fft.
X = ifft(Y,n)
Then, if you want to listen with matlab you can use
sound(X, Fs);
where Fs is the sampling frequency of your song.
You could also export it if you want to listen outside of matlab
filename = 'song.wav';
audiowrite(filename,X,Fs);

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