Ambient sounds coming to NYC Subway

"The nature noises, which are pending final review by the authority’s staff, would be focused by directional speakers on small areas of the station, allowing riders to “walk through” the sounds." A Calming Presence Amid the Groans and Screeches

I'm looking forward to seeing/hearing how this turns out. I think maybe this is too literal for my tastes, but I appreciate the forward progress.