It is estimated that 30% of the elderly hard of hearing do not use the correct type of auditory devices. sonus complete is something nearly everyone experiences at one time in his or her life whether it is permanent or temporary. Sufferers of both sonus complete and sonus complete, no matter how slight, should avoid being around loud noises such as airplane engines, heavy machinery, extremely loud music (rock concerts), or blaring IPods. This is important for the hearing-impaired person's family and closed ones and works great if your colleagues know some of it too.