https://jackschaedler.github.io/circles-sines-signals/ https://jackschaedler.github.io/circles-sines-signals/ There is also this wonderful primer on signal pro

https://jackschaedler.github.io/circles-sines-signals/ https://jackschaedler.github.io/circles-sines-signals/ There is also this wonderful primer on signal processing for people who love visualizations.