How well do you hear 1Hz? A 44.1KHz doesn't have a lot of frequencies outside of the audible range, but that's not really that relevant, as that's only a minor

How well do you hear 1Hz? A 44.1KHz doesn't have a lot of frequencies outside of the audible range, but that's not really that relevant, as that's only a minor trim compared to the crazy things lossy compression algorithms do here. Their main focus is having the result sound almost like the original. The audible sound-image is modified extensively by them, with focus on simplifications that are hard to notice for a human.