Credit: SWNS / Jacob Rosales

This is the heartbreaking moment a baby heard her father's voice clearly for the very first time - and got the fright of her life.

Little Nellie Rosales was born with microtia and atresia, which means she was completely deaf in one ear and could only hear quieter sounds - but struggled to hear voices.

So when she was fitted with a 'bone anchored hearing solution' and heard her dad Jacob's voice clearly for the first time, she got the fright of her life.

The video shows Nellie, who is now 11-months-old, being fitted with the hearing aid and bursting into tears as soon as she hears her dad's voice.

The device doctors fitted her transmits sound using vibrations from patients' skulls, allowing the ear canal to be bypassed.