Detailed text transcripts for TV channel - KGO - 20111227:11:44:00
Diego crowd -- this is what melissa hears. what is the sound that you can hear the best out on the field? >> the bass of the music. i just hear a lot of background noise basically. ♪ >> reporter: doctors don't know why melissa started losing her hearing at the age of 5, but since then it has only gotten worse. today she's lost 85% of her hearing and communicates with the help of a hearing aid and lip-reading. if you took the hearing aid out would you hear me? >> no, not at all. >> reporter: so it's your lifeline? >> absolutely. it helps me tremendously. and i need it to be able to live a nor...