Subaru Outback 2007, Whining Noise

We have almost 18,000 miles on car. Have had front right wheel barrings replaced (grinding noise). We were in stop and go traffic, heard a whining, almost siren like noise coming from the front left of car (noise increase when accelerated and decreases when taken foot off gas and slowing down). Noise was so loud we thought it was a police siren and were surprised when it was our car making these noises. Any thoughts as to what’s going on?

cant fix noises over the net,if it sounds like a siren(find a tech with ears to listen to it) LIVE AND IN PERSON.

Why waste any more time on the internet. Call your dealer this is under factory warranty and will be fixed free.