Does anyone in visual perception know why you can hear this gif? pic.twitter.com/mcT22Lzfkp
— Lisa DeBruine ️ (@lisadebruine) Dec. 2, 2017
When she asked Twitter users in an unscientific survey whether they could hear the image — which actually lacks sound, like most animated GIFs — nearly 70 percent who responded said they could.
Once you “heard” it, it was hard not to start noticing that other GIFs also seemed to be making noise — as if the bouncing pylon had somehow jacked up the volume on a cacophonous orchestra few had noticed before.
Look at the other images and read the article on the NYTimes https://www.nytimes.com/2017/12/08/science/why-we-hear-some-silent-gifs.html