ASN11 - Leakage demonstration in Octave: Difference between revisions
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Leakage occurs when the Discrete Fourier Transform (DFT) is applied to a signal whose range is not a multiple of the total period. | Leakage occurs when the Discrete Fourier Transform (DFT) is applied to a signal whose range is not a multiple of the total period. | ||
The DFT function assumes that the signal is periodic. | The DFT function assumes that the signal is periodic. | ||
example octave script no leakage | |||
fs=1500 | |||
t=[1:20]/fs; | |||
y=sin(2*pi*t); | |||
x= dft(y); | |||
example octave script no leakage | |||
fs=1500 | |||
t=[1:20]/fs; | |||
y=sin(2*pi*t); | |||
x= dft(y); | |||
Revision as of 16:14, 21 December 2009
Leakage occurs when the Discrete Fourier Transform (DFT) is applied to a signal whose range is not a multiple of the total period. The DFT function assumes that the signal is periodic.
example octave script no leakage
fs=1500
t=[1:20]/fs;
y=sin(2*pi*t);
x= dft(y);
example octave script no leakage
fs=1500
t=[1:20]/fs;
y=sin(2*pi*t);
x= dft(y);