A more realistic demonstration of FFT power based on simulated "real" EEG data. Note the 1/f relationship.

EEG FFT Demo

Real FFT vs ideal 1/f.
Auto-fit broadband EEG.

Noise level:
0.80

Spectrum mode:
Amplitude
Power (µV²)

Show 1 Hz base wave
Show ideal 1/f curve
Add 1–30 Hz 1/f power (auto-fit)

Play

Wave 1

Wave 2

Wave 3

Wave 4

Wave 5

1 Hz Base Wave

Noisy EEG

FFT (1–30 Hz)

Spectrogram