Recently when looking into my dreams, I have realised that I don't really seem to hear things in my dreams. I seem to rather think i'm hearing.
For example, when someone talks to me, I don't remember it feeling like it's coming through my ears, it's like I just know what they're saying. Like telepathy.
Sight is different, it actually seems like i'm looking through my eyes at something, but not when hearing, it doesn't feel like it's coming through my ears.

Is this the same for anyone else? Maybe when I next get lucid I'll try improving my hearing.