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1. What is FFT?
2. How an ECG signal looks like?
3. FFT of ECG signal
4. Windowed FFT of ECG
5. FFT of EEG signal
6. Windowed FFT of EEG signal
FFT on ECG/EEG signals
A fast Fourier transform (FFT) algorithm computes the discrete Fourier transform (DFT) of a sequence, or its inverse. Fourier analysis converts a signal from its original domain (often time or space) to a representation in the frequency domain and vice versa