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Fft of accelerometer data matlab

Fft of accelerometer data matlab
  1. How do you find the fft of a sequence in MATLAB?
  2. How do you find the frequency of a signal using fft?

How do you find the fft of a sequence in MATLAB?

Description. Y = fft( X ) computes the discrete Fourier transform (DFT) of X using a fast Fourier transform (FFT) algorithm. If X is a vector, then fft(X) returns the Fourier transform of the vector. If X is a matrix, then fft(X) treats the columns of X as vectors and returns the Fourier transform of each column.

How do you find the frequency of a signal using fft?

Let X = fft(x) . Both x and X have length N . Suppose X has two peaks at n0 and N-n0 . Then the sinusoid frequency is f0 = fs*n0/N Hertz.

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