Mine get loud if they are out of everything. If they are thirsty, hungry, and haven't had fresh food in awhile they can deafen you. Provided they have water, or pellets, or hay you just get a couple lightly wheeking when you walk by and if they are kept both watered and at least 1 food type they usually don't make any noise. Mine don't wheek loud for veggies because I don't carry them to the room in a container that makes noise.
It's actually useful they make a little noise. I don't have to check them constantly and they don't go without very long because I can check what they are out of when I start hearing a couple wheeks. My husband also can't ignore them when I'm ill. He's killed a chicken and a rabbit the past 2 times I was too ill to care for things because he doesn't realize when something malfunctions or is running out too quickly.
I'll tell you what's noisy. My cockatiels have started mimicking guinea pigs at their loudest. :lol: