Ragnor

That makes sense. In distortions for music instruments all of it is signal for instance. It’s just that sometimes you don’t want all of it because you want a specific sound to be produced.

I’m most used to working with digital electronics with a crystal supplying the frequency, so for me anything that is above that frequency is noise.

All units are made up.

I totally agree that imperial units are silly, though. Base 10 is the way things should be.

but you can calculate how much of the signal it lets through.

Shouldn’t that be “noise” instead of “signal”?