Strongly recommended · for beginners
Fourier Transform, Fourier Series, and frequency spectrum
Why people recommend it
A visual introduction to how waveforms add and split into frequency components, praised for making the jump from time domain to frequency domain intuitive.
Watch for: Best for visual learners new to signals
In their words
I think this video will help you understand how waves add together and how we can analyze them to their frequency components.
Schizomorph on electronics.stackexchange.com, Aug 2017. CC BY-SA.