Your the one who's giving birth, you can request anything you want, and within reason the staff will try to facilitate it. In most briths there wouldn't be that many people in the room anyway, you, partner and 1 midwife for most of the time, possibly with constants or other staff checking in intermittently, who will be happy to keep things quiet if that is what you need.
However if there needed to be 10 people in the room, they're there for a reason, which can't be avoided. Eg. My DS was an EMCS, so there were midwife, anesthetist, Surgeon, surgery nurses, pediatrician to check DS etc. They all new what they were doing, so in a way it was calm, but definitely a lot going on.
Might be worth having a think about what might help if there does need to be that many people, and letting your midwife know at that start what they can do to make you more comfortable. Could be things like having certain music on that you can focus on, having ear defenders avaliable if you want them, asking for non urgent conversations between HCP to be outside / other side of the room. They'll do their best, though may not be able to follow every request if there's a medical need that takes priority.