If you've ever been subjected to a babel of echoing voices during a teleconference, Microsoft Research is working on a solution. As demonstrated (link requires Microsoft Silverlight) at this week's TechFest, MR's audio spatialization project enables a PC with stereo speakers to spatially separate different members of a teleconference. Audio spatialization's been used for years in 3D gaming, but Microsoft Research has added a new twist: to make it work for teleconferencing, it's also added echo cancellation. As researcher Zhengyou Zhang puts it:
Audio spatialization uses speakers to create the illusion that call attendees have different locations spatially. This allows you to use the audio sense you already have, that you normally use in conversation, to isolate who you’re talking to, and to associate a location in space with a particular individual... In a conference where there are multiple voices coming out of multiple speakers, it becomes important to eliminate the echoes that might naturally occur.