Delete comment from: Ken Shirriff's blog

Chris-Mouse said...

I have to wonder why this would be considered risky. All it is doing is printing characters, which is what the printer was designed to do. Each time the hammer fires, it makes a click. it's our brains that blend the repeated clicks into a tone.
Unless there was some mechanical resonance with a multiple of the 11.1uS time between hammers firing, there shouldn't be any issues. I would think that any such resonance would sooner or later have been discovered during the years that these printers were in service.

Sep 13, 2019, 12:11:44 PM

Posted to Risky line printer music on a vintage IBM mainframe