Why your FFT Looks Wrong

Understand how windowing and FFT size actually affect your results, so your spectra match the theory you think you’re using.

In the first 6 videos you’ve seen why the FFT can mislead you when it’s used as a stand‑in for the continuous Fourier Transform. These final 3 videos walk through the practical fixes: windowing choices, FFT size, and how to interpret what you see.