Ah, I know what you mean.
I want to update something in my day 2, I asked CosmicIron and he explained me that I was really close!
When I was doing the cycles, I fell asleep during second cycle, and continued doing them in FA! That's why it felt so long. Then, the high pitched noise I was hearing, was the phase entrance or something like that. Because I misread cosmiciron's post, I started to concentrate on it and it faded away, I should just passively listen to it, wait as it increases it's volume, and then do a subtle RC.