Depends what you’re used to, I have a Bosch PSM200 AES multi sander (orbital) recently bought a Makita 150mm BO6030 random orbit sander and find it noticeably quieter.
I work in new product development. We generally only put data out for prototyping with suppliers we have NDAs (non disclosure agreements) in place with. That said, if we were ever making stuff that was particularly commercially sensitive for some reason we would do as others have suggested on...