People also harnessed that technique to playing music on a radio via RF noise, before sound cards were cheap. The thread at https://news.ycombinator.com/item?id

People also harnessed that technique to playing music on a radio via RF noise, before sound cards were cheap. The thread at https://news.ycombinator.com/item?id=11203951 https://news.ycombinator.com/item?id=11203951 point to some examples.