I don't know if you've had older model speakers but even the early 2000's ones when you would get a text or phone call it would capture the waves going through the air and play them. This sound right here. Maybe it's a visual form of that? I remember the super old monitors would make bizarre sounds coming on like a nuclear power plant.
Another time I was at my parents house when I was younger and I had headphones in for hours. I got up for some water and every radio in the house had been turned on and set to a mariachi station. Every radio in the house was in no way changed to that station. I didn't know how to take it or if it was making fun of my Hispanic heritage?
Another time in the same house a bottle of bleach unscrewed itself and started pouring into a puddle of battery acid creating chlorine gas. I heard my dog howling so I went to go check it out and as soon as I opened the door I saw a white misty cloud. I could smell chlorine. I could feel my eyes and my skin burning but especially my tear ducts. I knew instantly this is not good, and I ran grabbed my gas mask (which people make fun of me for having but it will save my life) I luckily have several gas masks and I put one on and grabbed my dog and started washing out his eyes and fur before washing out my eyes and showering. I got a massive headache for about an hour after that.
Holy smoke some thing sounds like it was targeting you HJ.