Tinnitus simply put is “hearing” noises in your ears when there is no outside source of the sounds. The noises that are heard vary from individual to individual. They can be soft or loud. Some of the sounds that may be heard are: ringing, blowing, roaring, buzzing, hissing, humming, whistling, or sizzling. It may be a combination of sounds and for many people the sound of their tinnitus actually changes to where they can hear a variation of differing sounds.