Our hearing (or auditory) system is constantly listening; even quietness has a sound. For tinnitus sufferers with hearing loss, the sounds they are missing create an absence of noise which the brain tries to correct with the tinnitus sound. Think of a radio that is not quite tuned correctly. To hear better you turn the volume up, but this increases the level of the background static at the same time.
The sounds differ with each person in terms of tone, pitch, volume and level of perception. It can be perceived in one ear, or even the center of the head. It may appear in passing phases, in wave-like intervals or may be continuous – and you can never forget that it’s there. A common cause of tinnitus is hearing loss