It's not just announcements. SLC (at least) used to have TVs playing the "Airport Channel". Last time I went through there (and maybe the time before?), they were gone. It makes a big difference. You still have announcements, but at least the announcements aren't cutting through some TV noise that you don't care about that is always there.

The international arrivals section of Vancouver airport is a great example of this. Indoor waterfalls, sound dampening on the walls and ceilings, carpeted floors and wide open space is a huge relief after a 5-15 hr flight. It's also an excellent way of making a great first impression on visitors.

Newly renovated (and beautiful) PDX does this too

I have this theory that all sorts of stimuli exhaust our nervous system: be it auditory, wind stimulation of skin, shaking or even smells. That's why people get tired flying on airplane, spending a day outside seemingly doing nothing, etc etc

Title: San Francisco Airport Removed 90 Minutes of Daily Noise — Travelers Say It Changed Everything

[dead]