Ahh, the peaceful whine of titanites. I used to focus on the whine to help sleep. Now, its just there. I once tried to find what frequency it is by playing tones on an app. Mine was the highest note the app had. Like Lori, it occasionally gets very loud but that only lasts a few minutes. If anybody knows of something that works to eliminate it, let me know. Till then, eeeeeeeeeeeee....