The impact of tinnitus on a patient's quality of life can be devastating (Tyler & Baker, 1983). Many patients report that the intrusive perception of sound - such as ringing, roaring, or buzzing - interferes with their ability to relax, sleep and concentrate, especially in quiet situations. Many tinnitus patients also report reduced tolerance of loud sounds, and will tend to avoid noisy (e.g. social) situations. The disturbing effects of the condition can lead to a desperate sense of loss of control.