Sampling & Aliasing Simulator

Visualizing how improper sampling causes frequency misinterpretation (aliasing)

Signal Frequency (Hz)

10 Hz

Sampling Rate (Hz)

50 Hz

Time Domain Signal

Original Signal

Sampled Points

Reconstructed

Aliased Signal

transition-all duration-30000 Adjust parameters to see sampling behavior

Amplitude

Time (s)

Signal Frequency

10 Hz

Sampling Rate

50 Hz

Nyquist Frequency

20 Hz

(Fs / 2)

Aliased Frequency

0 Hz

Reconstructed signal matches aliased frequency, not original signal

Sampling Status

No Aliasing

Signal can be reconstructed perfectly

Signal Spectrum

Aliased Components

Magnitude

Frequency (Hz)