That is interesting, I was using noise cancelling headphones a lot when mine came started.
Of course the morning it came on I was also recovering from being riotously drunk the night before, and I'm more inclined to believe something about that triggered it
Long term sufferer here.. One specific metal concert 15 years ago did me in (unfortunately). I too found that noise cancelling headphones actually flared up my tinnitus more; and resorted to selling my headphones.
