Contrary to popular belief, noise-canceling buds do not physically stop noise by shielding the ears. The earbuds emit anti-noise waves that cancel out unwanted sounds. Some users have complained of hearing some vibration in the ears. The same anti-frequency technology that eliminates noise can cause vibration in some eardrums. It can become worse if the user suffers from tinnitus. This intensely uncomfortable situation will also project through headaches, dizziness, and ear pressure.