The most common cause of tinnitus is prolonged exposure to high decibel noise. Those who work in professions that do not take the proper precautions to protect their ears are most at risk. Construction workers, airport employees, or concert techs are some examples of professions that could be at higher risk of tinnitus. The noise can damage the cochlea, which is a spiral shaped organ in the inner ear. This type of damage is permanent, which is the source of the constant buzzing or ringing.