Since 4 months my father is having hearing loss. Now he is using widex machine. But he feels humming sound from his brain which disturbs him for hearing to external sounds. He can hear horns, vehicle sounds, utensil sounds from kitchen , but not talks of people. Some times he clearly and sometimes his hearing is zero. He does not have any other physical problem except sleep problem. He sleeps only for 2-3hours in night Pls suggest treatment for him.