Some of that is intentional. I've heard lore about people eating faster and getting out sooner if the restaurant is louder.
Also heard lore about casinos using extremely bright and dizzying carpet designs to get you to avert your eyes from the floor, and onto the gambling equipment.
"the carpets are deliberately designed to obscure and camouflage gambling chips that have fallen onto the floor. The casinos sweep up a huge number of these every night. So the carpets are just another source of revenue."
Would there be money in machine vision to recognize fixed-layout outliers on regular patterns (i.e., fallen chips on the carpet) and scouring casino floors for a night?
I can definitely believe there is some truth to the casino carpet one. Las Vegas carpets are the only thing that has ever made me suspect I might have photosensitive epilepsy. I don't, but those carpets more than anything else in that city give me crippling headaches.
Also heard lore about casinos using extremely bright and dizzying carpet designs to get you to avert your eyes from the floor, and onto the gambling equipment.