Sharraxaadda

There is a terrible high pitched ringing noise coming from somewhere in this area. It has been going on for weeks, neighbors hear it too and no one seems to know what it is or where it comes from. At first it was only at night, all night now it is occurring all day and night. I am in Carriage Hill condos at corner of Whalley and Ella Grasso, and can hear it even inside with the windows shut. All we know is it isn't coming from any of our buildings and seems to get louder as you go down Ella Grasso towards the highway. Anyone else hear it and can you tell use what it is and where it is coming from? it is extremely irritating.