Heartwarming footage has emerged from the US of a young girl hearing her mum clearly for the first time without the help of hearing aids after getting a cochlear implant.

The video - filmed earlier this month at the the Center for Hearing and Speech in Houston, Texas - shows Breanna, who has worn hearing aids since she was a baby, testing the impants and getting emotional when she hears her mum's voice.

The filmer later wrote online: ''Breanna has worn hearing aids since she was a baby and was a student at the Melinda Webb School at The Center for Hearing and Speech.

''Her hearing has decreased over time to where her left hearing aid was not helping her understand speech."

"The cochlear implant she received will help her understand speech better with her left ear," she continued.