On-bin and off-bin sinusoids: what the DFT sees, and the DTFT it samples
Frequency f
0
(Hz)
Window N
Glide up one bin
Reset
Zero-padding
Magnitude
Linear
dB
Show the DTFT
Centre DC
Cycles in the window
Bins
Largest |X
k
|
Non-zero bins
The tick marks under the f₀ slider are the bin frequencies kF/N, and the slider snaps onto them. Sample rate F = 2000 Hz.