There are research papers that talk about how a lack of input from a damaged cochlear will cause the brain to remap and start activating for nearby frequencies, giving you T. If this is the case, might it be possible for long term auditory deprivation, where you turn down the input to a much larger portion of frequencies by using constant hearing protection or sedating the auditory nerve, to cause remapping that either corrects your existing T, or gives you different T that you can then 'fix' by adding the incoming signals back? The latter would be the reverse of what we are trying to accomplish with stem cells. Instead of repairing the damaged ear and hoping the new inputs even out the brain's broken response to sound, we instead make 'fake' damage and then fix it completely by taking out the ear plugs or stopping sedation of the auditory nerve. Auditory nerve sedation would probably not last very long and ear plugs will only stop high frequencies. As long as you didn't crunch too many carrots though it would definitely cause a drop in input. If you wanted to get really fancy, use a noise cancelling hearing aid and shift all noise down a few octaves. Everyone sounds like Barry White but you get to have a conversation with people. For those people with not just high frequency T, maybe you could notch all incoming noise around your tone(s). As a meaningless sweetener, @RaZaH has an in-depth study of 1, where someone wearing hearing protection constantly for 3 years experienced relief. So a few more of those and we'll have a Nobel prize I did used to go out on Saturday nights you know @Dr. Nagler , did you hear anything back from the people you were going to speak to in your auditory sedation question?