Sonic Boom bug after "What Pride Had Wrought"?

In all of of my three playthroughs an annoying sound bug begins some time after completing "What Pride had Wrought" and prior to the Corypheus fight. It always seems to start right before the door to the war room in Skyhold, next to the hole in the wall in the hallway between Josie's office and the war room, or at least that's where I hear the loud sonic boom effect the first time. Afterwards, it pops up every single time I open and close a menu, the map, inventory, travel.... it's annoying as hell and my third char is now in Trespasser, and while it's not a long chapter it's still annoying to hear that sound effect.

Any way to fix or work around it?