Microsoft Applies for Patent on Augmented Reality, 3-D Audio

Surround-sound systems are great for playing games and watching movies when you’re in the “sweet spot” of focused audio. When you’re sitting off-center, however, the audio sounds less like all-enveloping 3-D surround sound, and more like a garbled aural mess.
But now it looks like Microsoft may have a solution. In a recently published patent application, the company describes technology that could solve the “outside the sweet spot” conundrum, providing listeners with a polished 3-D audio experience no matter where they’re sitting, or even standing.
Published Thursday, Microsoft’s patent application describes augmented-reality technology that tracks a user with a “depth camera system” and delivers content-accurate, 3-D audio to the listener, regardless of his or her position in a room. The system collects room and listener position data to deliver specific audio cues — instructions from virtual team mates, gunshots, chirping birds, whatever — inside a user’s unique (and often fluid) soundscape.
This is particularly relevant for Xbox Kinect games, which entail a lot of movement among players. In these games, players continually shift their head and body orientation, which can cause havoc for positional sound accuracy.

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