This sounds like a miserable way to live. Can you have a house meeting and be honest about what is bothering you? It's your house too. Do they have a lease or is it month to month? I own a house and had a bad roommate and gave her a 30 day notice to leave, it was a tense 30 days, but it was over quick.
I know in a situation like this we have a tendency to isolate and try to avoid the problem but the only way to really solve it is to get it out in the open.
I would have a house meeting and say you are used to quiet and are having trouble adjusting to the noise, and ask them for solutions. Write down what you want to say if you get nervous or don't want to forget something.