- It defines y as x padded with 20000 columns on both sides
- It takes the DFT of the real part of the second row of y, shifts it to 0 takes the absolute value and divides by the length of the row.
whats this line do?
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y=[zeros(10,20000),x,zeros(10,20000)];
y2=abs(fftshift(fft(real(y(2,:)))))/length(y);
thanks!!!
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Sean de Wolski
le 26 Mai 2011
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itsik
le 26 Mai 2011
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Sean de Wolski
le 26 Mai 2011
It zero pads x with 10x20000 zeros on each side (columnwise)
try it on a small scale
x = magic(3);
y = [zeros(3,10),x,zeros(3,5)]
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