STEP ONE - THE NARROWBAND AOC
First the AOC checks if the power in each individual channel exceeds the level that will lead to distortion of the output sound, or exceeds the Maximum Power Output set in the fitting software for the individual user.
If that is the case, the AOC will reduce the gain in the relevant channel. If the signal is loud enough to affect the level in the neighbouring channels, gain will also be adjusted in those channels.
This step is called the narrowband AOC.