WhatsApp is the meeting point for many of the hoaxes that currently exist. For a few days a alleged audio with 8D technology has been circulating, and some wonder if this is real and possible.
The supposed 8D technology is an invention of modern marketing, although it is true that behind it there is a peculiar type of audio. The maximum technology that we currently have is 3D sound, and the truth is that this audio that runs through WhatsApp has been modified a posteriori.
The audio that has arrived through WhatsApp contains a song recorded with 8D technology, although maybe the name is a bit exaggerated.
WhatsApp audio allegedly belongs to A. R. Rahman, who is the author of the Slumdog Millionaire soundtrack. But this is not the case, since the song that is heard in the WhatsApp audio belongs to Dilbar, from the soundtrack of a film named Satyameva Jayate
So, making this clear, we see that currently 3D sound exists but recorded music can be modified with digital programs, something that does not surprise anyone.
3D sound can be binaural or ambisonic That is, a sound capable of being perceived as three-dimensional. To achieve this effect, where sound seems to come from any direction, it is necessary to record it with at least two omnidirectional microphones.
This technique simulates real human ears. So two microphones are placed, one on each side of the face, so that they pick up ambient sound as if they were our own ears.
Going back to the WhatsApp audio, it has simply been digitally modified to make it appear more immersive than it actually is. Of course, this effect only works with headphones, in some speakers the sense of directionality is lost.
Now that we know everything that is hidden behind this new WhatsApp viral and that there really is no8D technology (rather it is possible to speak of binaural sound) we can enjoy a song that, otherwise, does not pose a risk to the security of our smartphone.