Observed arrival · 2026-10-11
Phasorium: Signal processing, made visual
A free library of visual signal-processing lessons, arranged from basic signals through applications such as radar.
- For
- Learners studying signal processing
- Worth noticing
- The 11-part library runs from Signals to Applications, with lesson counts listed for each part.
Field notes
The library is arranged into 11 sequential parts, beginning with Signals (10 lessons) and continuing through Applications (11). The homepage previews concepts through compact visual explanations: a moving average slides along a signal, convolution becomes overlapping areas, and quantization rounds a wave into steps. The first lesson advertises five small examples that readers can drag, toggle, and step through; the page also offers search, dark/light display, and optional email updates.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
One card from the complete issue