A video of 40-year-old Joanne Milne hearing for the very first time has gone viral, and it is all thanks to a small device fitted on to her ear.
Although Joanne had worn hearing aids before, it was only with a cochlear implant that she was able to hear properly for the first time.
Here is how the technology works:
She said she was overcome with emotion when the implants were first switched on:
The switch-on was the most emotional and overwhelming experience of my life and I'm still in shock now.
The first day everybody sounded robotic and I have to learn to recognise what these sounds are as I build a sound library in my brain.
Hearing things for the first time is so, so emotional, from the ping of a light switch to running water. I can't stop crying.
I can already foresee how it's going to be life changing and the implants will get better and better over time, I'm so, so happy.