Imagine the sound mixing desk in a concert hall controlled not by a technician manipulating hundreds of knobs and sliders, but by pointing to speakers and changing volume and tone with the movement of an arm. This futuristic orchestra conductor is being made reality by the work of researchers in the school of music at the University of Leeds.
Dr Kia Ng of the Interdisciplinary Centre for Scientific Research in Music is developing ways of capturing human movement in three dimensions and using it to instruct computers to control or create music.
Ultimately the technique could also be used for everyday tasks like scrolling a web page with the movement of a hand, which could be especially useful for people with restricted mobility.
To capture 3-D movement, infra-red light is projected onto tiny reflective balls attached to clothing and monitored with cameras. The changing position of the balls is determined by triangulation and the computer recognises the movement as a gesture which it turns into instructions for music software.
Vanessa Bridge | alfa
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