Sounds like lightning to me! (Not thunder, just lightning. In other words I don't hear it.) I'll turn my speakers all the way up and play the gif all night just to annoy my neighbors.
My machine sits in the next room and I could hear the CPU fans just fine. But no sound from gif even with speakers full-on.
Does a tree falling in the forest make a sound if no one is there to see it? BTW: Please don't use this emoticon: It irritates my ears.
That sucks. I had tinnitus for about 3 years but it cleared up when I moved into a different house. Not sure what to make of why. I didn't hear anything when I watched the gif. But it was pretty funny to watch. Not what I was expecting to see.
If there were spammers and liars here or on that gif site claiming "yes, I hear a thudding sound, very faintly" blah, blah and there were several of these and very credible-appearing, what would you do, would you start investigating why the heck you couldn't hear it? The power of herd mentality--"synesthesia" is a fancy word for figment of your imagination. Lots of studies on this, it's actually fascinating and irritating that people are such followers at times. Edit: corrected spelling error
Synesthesia my ***. When we hear or read a "story" we "visualize" it in our brains, because it helps us understand it better. Same thing with this gif. They do not hear a sound they imagine it. In horror movies and games they use it all the time to "scare" the viewers/players. They combine sounds/music with events; the sound comes you expect a similar event; the event comes you expect to hear the sound/music. People who "hear" the sound probably like to watch fantasy movies with dinosaurs, giants, etc... and their brain has "combined" the jump of a giant plus the flickering of the screen with a thudding sound. Panagiotis