Your audiologist connects your sound processor to a computer and tests each electrode, one at a time. You will hear a series of beeps and say when they are soft, comfortable, or too loud. Those answers become your first program, often called a map.
Once the map is set, the audiologist switches the processor on to live sound. You will hear the room, voices, and your own voice through the implant for the first time. The appointment usually ends with a wearing plan and a date for your next adjustment.
First impressions vary a lot. Some people hear beeps or static that follow the rhythm of speech. Others hear voices that sound squeaky, robotic, or cartoonish. A small number understand some words right away, and most do not. Whatever you hear, the signal is reaching your hearing nerve — which is what activation day is meant to confirm. Turning that signal into clear speech is your brain's job over the weeks ahead.