Ffts

Visualising fft-signal [closed]

Visualising fft-signal [closed]
  1. Why are FFTs mirrored?
  2. What is 64 point FFT?

Why are FFTs 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.

What is 64 point FFT?

The 64-point FFT is realized by decomposing it into a two-dimensional structure of 8-point FFTs. This approach reduces the number of required complex multiplications compared to the conventional radix-2 64-point FFT algorithm. The complex multiplication operations are realized using shift-and-add operations.

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