Although there are many causes for tinnitus (noise induced hearing loss, head trauma, drugs, etc.), the overwhelming consensus on subjective tinnitus is that it is a "brain" problem, not an "ear" problem.
I can see tapping possibly affecting the inner ear fluid, but I don't see how it can result in a reorganization of hearing neurology, undoing the reorganzation that causes the tinnitus percept according to Jastreboff:
68 posted on 10/14/2011 3:15:46 PM PDT by nonsporting