Have your say! - 3D hearing experience. Use of headphones mandatory

From: Gema Rodríguez Núñez
Date: Fri, Dec 8, 2017

Link:  https://www.youtube.com/watch?v=IUDTlvagjJA

I have selected this link because it really called my attention when I heard it for the first time.  As it is in English I think is too good an audio for this activity, but for getting the effect, you need to hear it with headphones. It is absolutely compulsory, because if not, it doesn't work.

What surprise me the most is that if you really close your eyes and relax yourself for a while, you can actually feel that someone is cutting your hair around you. I had seen several times this kind of illusions but only with images, however this audio shows that sounds can also cheat on your brain. The effect is known as "binaural sounds", and it is based on the different position of each ear. Although they are quite close one of each other, there are some centimeters between them, and that's the reason why the sound frequencies that arrive at them are slightly different on each. By moving the volume and the wavelength, the sensation can be recreated and one completely feels that the sounds are in different places of 3D space even when they have been reproduced only on two headphones.

For me, though all the audio is great, there are some extra awesome moments: when the door is closed, the moment with the bag on your head and when the scissors and the electric razor go from right to left and you can sense they are nearly touching you. And the best is that the haircut is free!!!

                If you have enjoyed it (what I hope), you can find more examples of this sort of "auditory illusion" on the internet searching for "3D hearing experience".