Cisco has some systems like this. I've used them. It's neat, but it only really helps with a small number of participants. Also note that while audio is physic

Cisco has some systems like this. I've used them. It's neat, but it only really helps with a small number of participants. Also note that while audio is physically 3D, we are only good at distinguishing on a 2D plane. Basically, you easily get left/right, and you kinda get near/far, but you don't get up/down. Not unless you cock your head.