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Based on an add-on peripheral for the Xbox 360 console, Project Natal enables users to control and interact with the Xbox 360 without the need to touch a game controller, through gestures, spoken commands, or presented objects and images. The project is aimed at broadening the Xbox 360's audience beyond the hardcore base. Project Natal was first announced June 1 at the 2009 Electronic Entertainment Expo.The Project Natal sensor's microphone array enables the Xbox 360 to conduct acoustic source localization and ambient noise suppression, allowing for things such as headset-free party chat over Xbox Live.
The depth sensor consists of an infrared projector combined with a monochrome CMOS sensor, and allows the Project Natal sensor to see in 3D under any lighting conditions. Project Natal is reportedly based on software technology developed internally by Microsoft (gesture recognition, skeletal mapping, facial recognition, voice recognition) and hardware technology acquired by time-of-flight camera developer 3DV Systems. Before agreeing to sell all its assets in March 2009, 3DV had been preparing a similar device, known as the ZCam.
Technology demos
Three technical demos were shown to showcase Project Natal when it was revealed at Microsoft's E3 2009 Conference:
Ricochet - a Breakout-like game in which the entire body is used to bounce balls at blocks.
Paint Party - where the player can make throwing motions to splash paint onto a wall. He/she can choose colours using voice recognition, and can pose to make stencils.
Milo & Kate - a technology demo created by Lionhead Studios in which the player interacts with a young boy named Milo and his friend Kate, using items and passing him virtual items from real life actions.