Separating two sinusoids: leakage, windows, and frequency resolution
Spacing f
2
− f
1
(Hz)
Level of the second sinusoid (dB)
Duration D (s)
Listen
Reset
Window
Example
Custom (set with the sliders)
Equal pair 4 Hz apart (440 and 444 Hz)
Weak neighbour, 40 dB down, 10 bins away
Zoom
f₁ ± 8 bins
f₁ ± 30 bins
200 … 800 Hz (fixed)
0 … F/2
Show the DTFT
Show the window's spectrum
Fixed
Bin spacing
Spacing in bins
Leakage at f
2
This window
The dB scale is relative to the on-bin peak of a unit sinusoid for the chosen window, GNA₁/2. Space: listen / stop.