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Fft matlab code

Fft matlab code
  1. What is FFT code?
  2. How to extract frequency from FFT MATLAB?

What is FFT code?

As the name implies, the Fast Fourier Transform (FFT) is an algorithm that determines Discrete Fourier Transform of an input significantly faster than computing it directly. In computer science lingo, the FFT reduces the number of computations needed for a problem of size N from O(N^2) to O(NlogN) .

How to extract frequency from FFT MATLAB?

Y = fft(y,NFFT)/Datapoints; fs=Datapoints/Length; f = fs/2*linspace(0,1,NFFT/2+1);

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