I want to describe a recorded speech database in an academic paper. It has been recorded via telephone. People call from their home / workplace, but not under very noisy conditions. Usual environmental noises (somebody talking behind, vehicular noise etc.) are present. I thought of describing it as "the database is recorded under realistic conditions". What are some better alternatives for the word realistic, if any?
Only my own opinion, but personally I think OP's suggested "realistic conditions" implies controlled, artificial conditions - although specifically designed to mimic real-world conditions, there's always a chance the testers either failed to set things up as they intended, or were unaware of some crucial aspect of the "real real" world.
I have often heard the background sounds referred to as the ambient noise.
"Ambient conditions" seems to have more use on the Web as referring to weather, but if you told me that whatever I was about to listen to was recorded under ambient conditons I would be expecting background noise.