Monitor makes very loud noises?

My AOC monitor came today. I have now connected it to the old PS3, later I will try the Xbox One X. With the PS3, however, he made extremely loud noises as soon as you started a game. Does anyone know why that is?

https://www.amazon.de/...N79RJG#Ask (It's the one here)

Does the noise come from the speakers?

Possibly. A sound signal is missing, so there's noise.

I have to listen carefully again later.

But I can't imagine, because the sound sounds normal when you start the PS3. This loud noise only comes when you start a game. Maybe it's more the PS3

Is it more of a noise or are they more of a sound?

I think it sounds more like a high-frequency noise

Then maybe it's the fans of the monitor.