I am so sorry you heard the news too late to do you any good. The
noise disappeared for a month, but it's back now. It's enveloping me
and my apartment space right now! Audio clips are on
homeofthewhine.blogspot.com. I also have a clip recorded from 8B, but
it's too big for Youtube and I haven't edited it down.
Sorry to be negative. Not everyone is equally sensitive to noise, and
this noise might prove to be a nonissue for you. It's a high-pitched,
continuous whine persisting 24/7.