Is noise induced tinnitus permanent?

Probably: If the noise has produced a permanent high frequency hearing loss, then this loss of hearing will result in increased neuronal excitation in the central auditory nervous system. This is the cause of the tinnitus. The ringing in the ear is the perception of sound arising from the auditory nervous system in the brain. Masking, electro-magnetism and rarely anti-anxiety drugs may help.

Tinnitus: Yes, It could be permanent .