Discovering Electronic Music

The 1983 film "Discovering Electronic Music" is an introduction to the synthesizers and computers used to create electronic music. The film explains the basics of how sound is converted into electrical signals, the functions of oscillators, envelopes and filters, and the roles of samplers and sequencers.

A peek in history, blissfully unaware of Techno and candy-ravers. (Although, at the end they come quite close - 4/4, four beats, cycle two pitched notes.)