Filtering and Aliasing Visualizations

See continuous vs sampled signal, aliasing, and simple exponential smoothing.
5.0
30
0.10
0.25
3.0

Alias freq: 0.0 Hz

Aliasing: when signal freq ≥ Fs/2, sampled points appear at a lower alias frequency. Exponential smoothing: y[n]=α x[n] + (1-α) y[n-1].

Continuous signal Samples EMA filtered