And aside from speakerphones, also the "Lombard effect" -- when I am on a cell in a space like that I tend to cup my hand over my mouth/microphone and speak purposefully quietly. The other person can always hear me fine and I don't accidentally bother people by raising my voice due to the design of cell phone earpieces. I also will get up from a table and go to the lobby or another space if I really must take a call (rarely given texts work fine for urgent work stuff). Listening to one side of a conversation while someone yells into their cell is not as bad as a speakerphone call, I guess,. I wish lounges, instead of a quiet area, would have a designated "call area" where you are supposed to go if you need to make a call.