On: Synchronizing Pong to music with constrained optim...

[SoftTalker]

Atari had a video music "visualizer" device back in the late 1970s. Designed by one of the developers of the Pong game. One of if not the first consumer product of its kind.

https://en.wikipedia.org/wiki/Atari_Video_Music

If you've seen the movie Over the Edge, Claude and Johnny have one at their house.