Hearing noises without any external source is known as tinnitus or ringing ears. It is a common problem that affects about 15 to 20% of the world's population. Ringing ears can sound like ringing, whistling, buzzing, or humming; pitch and volume can also differ. The problem can be short-term or long-term, and it can be anywhere from mild to very bad. Tinnitus can significantly affect an individual's quality of life, causing trouble sleeping ...