Result

Why does my FFT result seem reversed?

Why does my FFT result seem reversed?
  1. Why is FFT output mirrored?
  2. Why is FFT two sided?
  3. What is the result of FFT?
  4. What does the FFT return?

Why is FFT output mirrored?

Because both the positive and negative frequency sinusoids are 90 degrees out of phase and have the same magnitude, they will both respond to real signals in the same way.

Why is FFT two sided?

The two-sided results from the analysis functions include the positive half of the spectrum followed by the negative half of the spectrum, as shown in Figure 1. is the root mean square (rms) amplitude of the sinusoidal component at frequency k.

What is the result of FFT?

The FFT function returns a result equal to the complex, discrete Fourier transform of Array. The result of this function is a single- or double-precision complex array.

What does the FFT return?

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.

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