Hearing is the least sensitive of all the human senses most people can't tell with confidence that pitch has changed for 1 and 1/2 octaves. For those than can appreciate the difference, you are one of the luck ones.
I'm sorry- youtube kept giving me a bad link. Your comment should probably be in the other audio thread!
I still have pretty good ears (not many rock concerts - not a lot of headphones - mainly loud dnd games.)