Bro I literally at home all alone then started to listen to this while listening at first it was like okay that sounds like heartbeat then I open my eyes and my eyeballs where like shaking then suddenly something beside me like moving and it was so creepy I got chills then I stop the sound just to realise it why paper that fell down but it made it so creepy 😭
18 Hz is the resonant frequency of the human eye. So hearing this tone loud enough can cause you to see black shadows that isn't there, or the feeling of being watched.
I can listen the sound it is just like tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra tra .
i clicked on this because i'm planning to add infrasound to the soundtrack of a horror movie i'm making. fascinating, i read that these frequencies can cause a sensation of pressure in the ears, but i didn't expect it to be so pronounced. i can even feel it in my cheek and upper jaw bones, along the route of what i'm guessing are the eustatian tubes and into my pharynx, notably in my hard palate and rear upper molars.
this is just a placebo. They just tell u ur gona see this and that so u see them but not because of the sound. I have not experienced these fear or ghost claims
All you hear is upper harmonics of the sound spreading out across all the frequency spectrum. Don't lie to yourself, you can't hear below 20 hz. Even if we imagine the world in which you could, most consumer speakers/headphones (the ones which you most likely use) can't produce such low frequency sound.
Dude, this didn’t do a lot until after the video. When it stopped, I was wondering why I wasn’t feeling scared, but them I look around my room, and start getting paranoid that someone was in my room. It was like I had a panic attack.
