Haliperidol - drugs by schizofrenia? Well. Or just have a kind, friendly chat with voices of agents of CIA.
Might want to get that checked out by a doctor... Is this a special Hebrew way of saying I was deaf but now I can hear? Lately would indicate one did not hear things before.
There is another way to take this besides mental health. It could mean that he has been hearing rumors or gossip. I could see this sentence being said at an office lunch about rumors about what management is planning. Or how about a spy reporting to his handler?