White Sound of the Great Diesis. Perfect for linear calibration of sound equipment, masking unpleasant environmental noise, improving focus, and stimulating the nervous system. It is also used to prevent insomnia, reduce pain, increase awareness, and in many other natural health applications. The U.S. Government suggests White Noise for Tinnitus sufferers. The National Institute on Deafness and Other Communications Disorders (NIDCD ) recommends mild noise to 'mask' sounds, which helps Tinnitus sufferers sleep and perform other tasks. Contains 268,435,456 whole number ratio partials of the Great Diesis with identical amplitude and 100% evenly distributed phase.