Windowed FFT magnitude / leakage effect
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Hello,
i am doing an windowed fft to get the magnitude by a frequency.
But the result of the magnitude is not the magnitude of the sampled summation of sinusfunction, which i defined.
This effect is the leakage effect and i heard about a correction factor to get the right magnitude from the windowed fft.
Thank you for help!
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답변 (1개)
Samatha Aleti
2019년 7월 17일
Hi,
You may calculate & apply Amplitude correction factor to compensate the leakage effect. Here is an example
N= 100;
w = hann(N);
% correction factor
Cf=length(w)/sum(w);
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