How are music downloads 'upsampled'?


When I download music from iTunes, it comes in at maybe a 4mb file. When I change it to an 'Apple Lossless' file, it becomes a 20mb file. Where does that new data come from?
hi_end

Showing 1 response by buconero117

Can't have what is not there. That is why the hi res stuff is always better. Apple I understand is working on a iTunes hi res service.