I'm following the "do it yourself" ACR treatment with positive results, but these days I'm realising something. I have two main tonal tinnitus frequencies. The one I'm treating (it gets inaudible with ACR) is about 1650hz, the other is a bit lower, it could be around 900-1000hz. With the use of ACR I've come to some insights. The treatment is designed to cause auditory cortex plasticity so the changes reduce the tinnitus frequency treated. That plasticity has made my other tone (the one about 1000hz) to raise its volume slightly at times. There was a moment that I though the volume was too high, went to a quiet room, it seemed lower, then I realised that the tone was EXACTLY the same that one emitted by my computer (probably the CPU or one of the cards, I don't know). Also, the tone I'm treating (the one about 1650hz) I had previously noticed that was a similar frequency to one emitted by my very noisy fridge motor (I sleep in a room next to the kitchen). Now I'm trying to limit my computer time taking many breaks, and unplugging both computer and fridge while I sleep. The lower tone is also starting to improve. Someone has "catched" tones from electronics or motors in their enviroment? Is there a way of desensitizing the brain to this, maybe with a TRT like treatment as for hyperacusia? Or will I have to avoid these kinds of sounds forever?