Many people's T gets louder when they move their jaw forward. This is "normal" as in "very common". It might be the way for the healthy people to experience T (in other words, when normal people move their lower jaw forward, they hear T).
It sounds like what you have is a version of that...
our TMJ is too close to the ear. Or nerve endings in the joint cartilage somehow get irritated from the joint itself, due to position or due to muscle tension. ETD is being caused by the same damn thing... if you have been clenching, mewing or chewing hard, don’t.
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