Is it normal i have super hearing??

ok this has always seemed crazy to me. but I have been talking about my problens and weird experinences to my brother and he seems to have the exact same problem as me.

Ever since I was a small child I have noticed that I have extreem difficoulty talking to people because they don't seem to understand\hear me. ofthen I would say something and unless I'm direcly infront of them they would ask me to repete, or if I call them from another room they never seem to hear. i used to be convinced when I was small that my parents both had hearing problems, or that they where doing it on purpose to punish me for something because I hated being ignored.
I have also noticed that where ever i am in my house i can hear what's going on, what people are saing, my mom cooking, people walking around ( also live in quite a large house with brick walls so "the other side of the house" can be quite far). so much so that my parents allways complained that I eavesdrop, but in reality it's just that they feel like they are talking to me.
also when I am in class I used to allwais conplain that it was too noisy and that i couldnt understand the teacher. or if there is somethin like music goind on in the back ground even if it's not loud. i can't understand some one talking to me, it's a bit like I can't seem to differenciate the two sounds because they are both so loud.
it tends to realy annoy me because it causes me to snap at people and say things like " how the hell didn't you hear that!" wich allways makes me feel bad. and I allways feel like i have to talk louder to people (incidently not to my brother).
I also keep the volume of my ipod much lower that everybody else, If you have an ipod set the sound to a bit less than half way.. thats how I listen to it.
since I have been clubbing a cupple of times it's got a little bit better, (it used to be terrible when i was a child) like as if i used to have better hearind that every one else, so it caused me all theis problems, and now the night clubs have deafened me a little bit and my hearing is a bit closer to a normal persons, so less problems ( even thow to me this seems like the worst solution to my problems).
it seem unlikely to me but is it possible i just hear things much louder than other people? or could it be something else?