Page last updated at 00:59 GMT, Wednesday, 1 July 2009 01:59 UK

Software visualises how parents move

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Professor Deb Roy of the Massachusetts Institute of Technology (MIT) has recorded every movement of his son's waking life over three years to shed light on how babies acquire language.

The Human Speechome Project, as it is known, uses 11 cameras and 14 microphones installed in the scientist's home.

In this footage, software extracts the movement of care givers around the child, building up a picture of their interactions over time. Algorithms can then be used to look for meaningful patterns in the data.

Video courtesy of MIT Media Lab.

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