regarding conversion of time domain data to frequency domain having large values like 4096
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I have 4096 values in time domain. i want to convert them to frequency domain using fft.how to convert them? should i select small small samples of values(ex; 1st 10 next 10 like that till 4096) and convert or should i select single value or should i select all 4096 values alltogether and convert them. please help me in this regard.
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Arturo Moncada-Torres
2011년 5월 16일
Well, it all depends on what you want. At first glance, I suppose using all 4096 values will be correct:
% Suppose you have the 4096 values in array "x"
x_fft = fft(x); % Fourier Transform (complex)
x_mag = abs(x_fft); % Magnitude
x_pha = angle(x_fft); % Phase
Hope it helps ;-) !
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