A set of sounds, which is said to be heard by 60% of the people

The so-called "five senses", namely, vision, touch, smell, taste and hearing, are the feelings of the brain. In many cases, the brain does not have the feeling of "brain filling", such as...
There are users on the network to share a moving picture, that is stared for a while, as if you can hear "thump, thump, thump sound..."
It is said that 60% of the people can hear the sound!
This is actually related to the content of the image. For example, the huge beating of the picture will automatically add the sound to the brain. And the following dynamic maps are said to have sound, you feel:
"bang"

"bang"

"Dong Dong Dong Dong Bang, bang, bang..."

"Click, click, click..."

"Bared bared bared ~"