Yes, carpeting will effect the sound. Also, the size of the room, and how much furniture you have. If you like a lot of echo, go for hardwood floor. I find that echo makes a room noisy (think of stair wells, bathrooms, etc). It might be nice if nothing else is going on... to get that natural reverb. But if you want to sing, or add other instruments, it could get too noisy. And, if you want to record yourself, that reverb will be a big problem. I have tried to remove reverb from audio recordings, and it is not really possible to do it fully without also mangling the wanted sound. However, it is easy to add reverb to a normal audio track.
I would at least have some throw rugs if you remove the carpet.
–Lori