Citizen complaint of the day: The hill is alive with the sound of pinging

A being-driven-mad citizen files a 311 complaint about the non-stop pinging or ringing, but definitely not singing on Mission Hill:

There is a high pitch ringing noise that has been pinging off of the ears of residents in the Mission Hill section of Boston. This pinging noise goes off 24 hours a day, seven days a week and has been doing so for over a month. I believe that the sound is coming from Brigham and Women's Hospital's Main Campus or a satellite office located at 800 Huntington Avenue. I've reached out to the powers that be but cannot get an answer and am asking for help to try to get this high pitched ringing sound stopped. Any help you would be able to provide would be greatly appreciated. Thank you!