Hearing aids can help people with hearing loss, but they don't completely restore normal hearing. They can improve your ability to hear by amplifying sound. However, even when the sound level increases with a hearing aid, you still may notice some hearing loss. A cochlear implant is a small, complex electronic device that can help to provide a sense of sound to a person who is profoundly deaf or severely hard-of-hearing. Other technologies and hearing devices for the deaf include visual alert systems, FM systems, loop systems, accessible telephones and videophones.