MATLAB: Speech_dft_8kHz.wav

speech dft 8khz.wavwav

how do I listen to the speech dft 8kHz.wav file and display the input samples

Best Answer

Start with the audioread (link), then sound (link) functions.

To plot it, create a time vector from the ‘Fs’ (sampling frequency) value and the length of your file ‘y’ in the audioread output.

I leave the rest to you.

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MATLAB: DFT

Hi Lisa, you had a couple problems with your code:

N= 4; 
x=1:4;
for k=0:3
    for n = 0:3;
y(n+1) = x(n+1).*exp(-(1j*2*pi*k*n)/N);
    end
    xdft(k+1)= sum(y);
end

compare to

fft(x)

MATLAB: What is interpolated dft

Yes, you just zero pad the input by providing the optional NFFT argument to fft()

If you use an NFFT value that is greater than the length of the input data, the DFT is interpolated. Instead of getting DFT coefficients at Fs/N where Fs is the sampling frequency, you get them at Fs/NFFT

Best Answer

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MATLAB: DFT

MATLAB: What is interpolated dft

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