I don't know about "extremely loud", but loud is kinda relative unless you're talking about measuring with a decibel meter. I would probably say on par with a washing machine. For me it kind of dwindles into a background hum. YMMV.
I highly recommend getting some Sunsheen cleaner for your shot and barrel. It's counter intuitive that soap and water could leave your shot dirty, but there is a definite buildup! I nearly ruined a lot of my copper projects before I figured out to tumble my pieces with the Sunsheen. I had to ask the FB group for help in figuring out the problem-which was either the barrel itself or a PH issue. Either was the Sunsheen fixed it and it also cleans my shot while it works, which means one less step later!